This guide is general information for UK landlords and is not regulated financial advice. RentalReadyUK is not authorised by the Financial Conduct Authority and does not recommend specific lenders or products. Bridging finance and buy-to-let lending carry real risk, including the loss of the secured property. Always take advice from an FCA-authorised broker or adviser before committing to any borrowing.
Regulated vs unregulated: most buy-to-let and bridging lending to landlords is unregulated, meaning you generally do not have Financial Ombudsman Service protection if things go wrong. Bridging secured against a property you or a family member will live in is normally regulated. Confirm which applies before you sign.
Properties that represent real value are often in poor condition. And properties in poor condition are frequently deemed uninhabitable by mainstream mortgage lenders — meaning a standard buy-to-let mortgage is simply not available at the point of purchase.
This guide explains the full landscape of buy-to-let financing in 2026 — including how bridging loans work, how the Buy Refurbish Refinance Rent (BRRR) strategy works, what the real costs are, where the pitfalls lie and how to assess whether a deal actually stacks up before committing.
Why Standard Buy-To-Let Mortgages Don’t Work For Every Property
Buy-to-let mortgages from mainstream lenders typically require a property to be in a lettable condition at the point of purchase. This means it must be structurally sound, have a functioning kitchen and bathroom, be weathertight and — in most cases — have a valid or achievable EPC rating of E or above.
Properties that fail these tests — those with significant structural issues, no working kitchen or bathroom, severe damp or mould, or that are effectively derelict — are classified as unmortgageable or uninhabitable by most high street lenders.
This creates a frustrating situation for landlords looking to add value. The properties with the best potential returns are often the ones that cannot be financed conventionally — precisely because they need the work that would make them valuable.
The solution for many landlords is bridging finance — short-term funding that bridges the gap between purchase and the point where a conventional buy-to-let mortgage becomes available.
What Is A Bridging Loan?
A bridging loan is a short-term secured finance facility — typically lasting between 1 and 24 months — used to fund a property purchase or refurbishment where longer-term mortgage finance is either unavailable, too slow or structurally inappropriate at the time of purchase.
Unlike a buy-to-let mortgage, bridging lenders will fund properties in almost any condition. What they require instead of a habitable property is a clear and credible exit strategy — a defined plan for how the loan will be repaid at the end of the term.
The two most common exits are:
- Refinance — the property is refurbished, reaches a mortgageable condition, and a buy-to-let mortgage is taken out on the improved value to repay the bridging loan
- Sale — the property is refurbished and sold, with the proceeds used to repay the bridging loan
For landlords looking to build a rental portfolio, refinance is typically the preferred exit — allowing them to keep the property and recycle their capital into the next deal.
How Much Do Bridging Loans Cost?
This is where many landlords get an unwelcome surprise. Bridging loans are significantly more expensive than buy-to-let mortgages — and understanding the full cost is essential before committing to any deal.
Bridging loan interest is quoted monthly rather than annually. In 2026, rates typically range from:
- 0.55% to 0.65% per month — the most competitive deals for straightforward cases at low loan-to-value (below 60-65% LTV) with clean credit history
- 0.75% to 1.0% per month — typical for standard residential bridging at 70-75% LTV
- 1.0% to 1.5% per month — higher-risk cases including adverse credit, non-standard property types or higher leverage
At 0.75% per month, a bridging loan of £100,000 costs £750 per month in interest — or £9,000 over 12 months. That is equivalent to approximately 9% per annum, compared to a buy-to-let mortgage rate of around 5-6%.
But interest is only part of the cost. Bridging loans also typically carry:
- Arrangement fees — typically 1-2% of the gross loan amount, payable on completion
- Exit fees — some lenders charge 0-1% of the loan when it is repaid
- Valuation fees — lenders require an independent valuation of both the current value and the post-works value
- Legal fees — both the borrower and lender’s legal costs
- Broker fees — specialist bridging brokers typically charge 1-2% of the loan
On a £100,000 bridging loan over 12 months the total costs — interest, arrangement fee, exit fee, valuation and legal fees — could realistically total £13,000 to £18,000 depending on the lender and deal structure. These costs must be factored into the deal analysis before purchase.
How Much Can Landlords Borrow On A Bridging Loan?
Most bridging lenders will advance up to 75% of the current open market value of the property being purchased — not 75% of the purchase price.
This is an important distinction. If a landlord is buying a property below market value because it needs work, the lender will typically lend against the actual market value — which may be higher than the purchase price. This can work in a landlord’s favour.
For example — a property with a market value of £120,000 that a landlord is purchasing for £90,000 because it needs significant refurbishment. At 75% LTV the bridging lender may advance £90,000 — effectively funding the full purchase price — with the landlord using their own funds for the refurbishment costs.
Some lenders will also factor in the Gross Development Value (GDV) — the estimated value of the property after refurbishment — when calculating how much they will lend. This can allow landlords with strong plans and track records to access higher loan amounts.
What Is The BRRR Strategy?
BRRR stands for Buy, Refurbish, Refinance, Rent — sometimes also called BRRRR with an extra R for Repeat.
It is a property investment strategy built around the idea of purchasing properties below market value, adding value through refurbishment, refinancing onto a long-term buy-to-let mortgage at the improved value, and then renting the property — ideally recycling most or all of the original capital to repeat the process on the next deal.
Here is how the strategy works in theory:
- Buy — purchase a property below market value because it needs work, using bridging finance
- Refurbish — carry out the necessary works to bring the property to a lettable and mortgageable standard
- Refinance — once the works are complete, obtain a buy-to-let mortgage at 75% of the new improved value — ideally repaying the bridging loan and recovering most of the original deposit
- Rent — let the property and generate monthly rental income
- Repeat — use the recycled capital to fund the next deal
A Real Example Of The BRRR Strategy
To illustrate whether the numbers can work, here is a simplified example using realistic 2026 figures:
The purchase
A landlord identifies a property with a market value of £130,000 that is being sold for £95,000 because it needs a full kitchen replacement, bathroom refurbishment, new flooring throughout, redecoration and some electrical work.
The finance
A bridging lender advances 75% of the £130,000 market value — £97,500. This covers the full purchase price of £95,000 with a small surplus. The landlord uses their own funds of approximately £40,000 to cover the refurbishment costs, bridging interest, arrangement fees and other costs.
The refurbishment
The landlord spends £25,000 on works over 4 months. The property is now in excellent lettable condition. An independent RICS valuation confirms a post-works value of £160,000.
The refinance
The landlord obtains a buy-to-let mortgage at 75% of the £160,000 post-works value — £120,000. This repays the bridging loan of £97,500 and returns approximately £22,500 to the landlord.
The result
The landlord started with £40,000 of their own funds in the deal. After the refinance they have recovered £22,500 — meaning their net capital tied up in the property is approximately £17,500, plus the bridging loan costs of perhaps £8,000-10,000 over the 4-5 month period. Total capital tied up — around £25,000-27,500.
The property is worth £160,000 with a mortgage of £120,000 — meaning the landlord has built equity of approximately £40,000. And the property now generates rental income on a long-term buy-to-let mortgage at current rates.
This is why the BRRR strategy appeals to landlords — done correctly it allows capital to be partially or fully recycled while building a rental portfolio and equity position simultaneously.
Why The BRRR Strategy Is Hard In Practice
The example above makes the strategy look straightforward. In practice there are significant challenges that landlords need to understand before committing to this approach.
Finding the right property is extremely difficult
Properties that are genuinely below market value by enough to make the numbers work are rare and highly sought after. Estate agents, developers and experienced investors are all looking for the same deals. Landlords who find a genuinely good deal often need to move very quickly.
Refurbishment costs are hard to predict accurately
Building works almost always cost more and take longer than initially planned. An unexpected structural issue, hidden damp, asbestos or electrical problems can significantly increase costs and reduce the profitability of a deal. Contingency budgets of 15-20% of estimated costs are essential.
The six-month rule affects refinancing
Many buy-to-let mortgage lenders will not offer a mortgage on a property that has been owned for less than six months — known as the six-month rule. This is designed to prevent property flipping. Landlords planning a BRRR strategy need to factor this into their bridging loan term — a 4-month refurbishment may need a 6-7 month bridge to allow for the refinance to complete.
Post-works valuations may not reach expectations
The entire refinance calculation depends on the property being valued at or above the expected post-works figure. If the valuer takes a conservative view — or if the market has moved — the refinance loan may be smaller than expected, leaving more capital tied up in the deal.
Bridging costs eat into returns
Every month a bridging loan remains outstanding costs money. Delays in the refurbishment or the refinance process increase the total bridging cost and reduce the deal’s profitability. Speed of execution is critical.
Buy-to-let mortgage rates remain elevated
Even after a successful refinance, current buy-to-let mortgage rates of 5-6% mean the long-term debt cost is significantly higher than it was three to five years ago. Landlords need to ensure the rental income comfortably covers the mortgage payments after the refinance.
What Should Landlords Check Before Committing To A Deal?
Before committing to any bridging-funded property purchase, landlords should work through the following checklist:
Purchase price and market value
Is there genuinely enough gap between the purchase price and the current market value to make the numbers work? As a rough guide, buying at 25-30% below market value is typically the minimum required to make bridging finance viable.
Refurbishment costs
Get detailed quotes from at least two or three contractors before purchasing — not estimates. Factor in a 15-20% contingency for unexpected costs.
Post-works value
Get an independent view on the realistic post-works value from a local agent or surveyor before purchasing. Be conservative — do not assume the best-case scenario.
Refinance calculation
At 75% LTV on the post-works value, will the refinance repay the bridging loan in full? Will it also return a meaningful portion of the original deposit? If the refinance does not cover the bridging loan there is a serious problem.
Rental yield on the refinanced property
After the refinance, will the rental income comfortably cover the buy-to-let mortgage payments, insurance, maintenance and other costs — and still generate a meaningful return?
Total bridging cost
Calculate the total bridging cost including interest, arrangement fees, exit fees, valuation and legal fees. Add this to the refurbishment cost and the deposit to arrive at the total capital required.
Exit strategy if the refinance fails
What happens if the post-works valuation comes in lower than expected or the refinance falls through? Is the property sellable at a price that repays the bridging loan? Having a fallback exit strategy is essential.
Using A Specialist Broker
Navigating bridging finance and buy-to-let mortgages — particularly for non-standard properties — is complex. The market for bridging finance involves many specialist lenders who do not deal directly with borrowers, and rates and terms vary enormously between lenders.
A specialist broker who works across the bridging and buy-to-let mortgage market can:
- Access lenders not available directly to borrowers
- Match the deal structure to the most appropriate lender
- Negotiate better rates based on deal volume and relationships
- Coordinate the transition from bridging to buy-to-let mortgage to minimise delay and cost
- Advise on deal viability before the landlord commits
For complex deals involving uninhabitable properties, significant refurbishment and a planned BRRR strategy, a specialist broker is not a luxury — it is a necessity.
What Is The Realistic Outlook For BRRR In 2026?
The BRRR strategy works in 2026 — but the margins are tighter than they were three or four years ago. Higher bridging rates, higher buy-to-let mortgage rates and more competition for genuinely undervalued properties mean that deals need to be analysed more carefully than ever.
Landlords who approach BRRR deals with realistic numbers, conservative estimates, experienced contractors and good professional advice can still build profitable rental portfolios through this strategy. Those who rely on optimistic assumptions about refurbishment costs, post-works values or refinance rates are likely to find the reality disappointing.
The key shift in 2026 is that BRRR has moved from being a strategy where mediocre deals could still work to one where only genuinely good deals with strong fundamentals succeed. That raises the bar — but it does not make the strategy unviable for well-prepared landlords.
GOV.UK Guidance
Landlords can find official guidance on buy-to-let tax and compliance obligations here: HMRC Rental Income Guidance
Frequently Asked Questions
What is a bridging loan and when do landlords need one?
A bridging loan is short-term secured finance used to purchase a property that cannot be funded by a conventional mortgage — typically because it is uninhabitable or needs significant refurbishment. It bridges the gap between purchase and the point where long-term mortgage finance becomes available.
How much do bridging loans cost in 2026?
Bridging loan rates in 2026 typically range from 0.55% to 1.5% per month depending on loan-to-value, property type and borrower profile. At 0.75% per month a £100,000 loan costs £750 per month in interest — approximately 9% per annum. Arrangement fees of 1-2% and other costs add to the total.
How much can landlords borrow on a bridging loan?
Most bridging lenders advance up to 75% of the current open market value of the property — not 75% of the purchase price. For properties purchased below market value this can effectively fund the full purchase price.
What is the BRRR strategy?
BRRR stands for Buy, Refurbish, Refinance, Rent. It involves purchasing a property below market value using bridging finance, refurbishing it to add value, refinancing onto a buy-to-let mortgage at the improved value, and renting it out — ideally recycling most of the original capital for the next deal.
What is the six-month rule for buy-to-let mortgages?
Many buy-to-let mortgage lenders will not offer a mortgage on a property owned for less than six months. Landlords planning a BRRR strategy need to factor this into their bridging loan term — typically requiring a bridge of at least six to seven months even if the refurbishment takes less time.
What happens if the post-works valuation is lower than expected?
If the post-works valuation comes in below expectations, the refinance loan will be smaller and may not fully repay the bridging loan. Landlords need a fallback exit strategy — typically the ability to sell the property at a price that covers the outstanding debt.
Do I need a specialist broker for bridging finance?
For non-standard properties and BRRR deals, a specialist broker is strongly recommended. Many bridging lenders do not deal directly with borrowers, and rates and terms vary enormously. A good broker can access better deals, coordinate the bridging to mortgage transition and advise on deal viability.
Can I use bridging finance to buy at auction?
Yes — bridging finance is commonly used for auction purchases where completion is required within 28 days and a conventional mortgage would take too long to arrange. The bridging loan is then repaid through refinance or sale.
What is the minimum discount I need to make BRRR work?
As a rough guide, buying at 25-30% below market value is typically the minimum required for a BRRR deal to work once bridging costs, refurbishment costs and the refinance calculation are factored in. Smaller discounts leave insufficient margin to make the numbers viable.
How do buy-to-let mortgage rates affect BRRR deals in 2026?
Current buy-to-let mortgage rates of 5-6% significantly affect the long-term profitability of BRRR deals. After refinancing, landlords need to ensure rental income comfortably covers the higher mortgage payments — requiring stronger yields than were needed when rates were at 2-3%.
Related Articles
- Is Buy-To-Let Still Worth It In 2026? An Honest Landlord Guide
- Making Tax Digital For Landlords — Everything You Need To Know In 2026
- EPC Rules For Landlords 2026 — Minimum Ratings Explained
- What Insurance Do Landlords Need In 2026?
- The Compliance Deadlines Landlords Cannot Afford To Miss In 2026
- Landlord Compliance Checklist For 2026
- How Tenant Referencing Helps Landlords Avoid Rent Arrears
- What The Renters’ Rights Act Means For Landlords In 2026
- Is Buy-To-Let Still Worth It In 2026? An Honest Landlord Guide
- Semi-commercial property: the tax saving and the catch
Final Thoughts
Financing a buy-to-let property in 2026 — particularly one that needs refurbishment — is genuinely more complex and more expensive than it was a few years ago. Higher bridging rates, elevated buy-to-let mortgage rates, tighter lender criteria and the need to find genuinely undervalued properties all raise the bar.
But the strategy still works for landlords who approach it correctly:
- Find genuinely good deals — properties at least 25-30% below post-works market value
- Get accurate refurbishment costs before committing — not estimates
- Calculate the full bridging cost including all fees — not just the monthly rate
- Model the refinance conservatively — assume lower post-works valuations rather than best-case
- Ensure the long-term buy-to-let mortgage payments are covered comfortably by the rental income
- Always have a fallback exit strategy if the refinance does not go to plan
- Use a specialist broker — the bridging and specialist mortgage market is not one to navigate alone
How to Check a Lender or Broker Is Legitimate
The specialist lending market attracts a number of firms that are not what they appear. Before you send anyone a fee, run these checks.
- Search the FCA Register. Every authorised firm has a reference number. Check the firm name and number match, and that the permissions cover what they are actually offering you.
- Call the number on the FCA Register, not the one in their email. Clone firms copy legitimate firms’ details and substitute their own contact information. This is the single most effective check you can make.
- Check Companies House. Look at incorporation date, filing history and director history. A brand-new company offering large-scale lending warrants caution.
- Be wary of large upfront fees. Legitimate brokers do charge fees, but demands for substantial payment before any offer is produced are a common fraud pattern.
- Never send money to a personal account. Ever.
If a deal is being pushed with artificial urgency, that pressure is itself the warning sign.
What Happens If You Cannot Repay on Time
Most guides skip this. It is the part that matters most, because bridging finance is short-term borrowing secured against property, and the exit is where landlords get caught out.
Typical sequence if your exit fails:
- Default interest applies. This is normally at a significantly higher rate than your headline rate and compounds quickly.
- Extension fees. Some lenders will grant an extension — usually at a price, and not guaranteed.
- Enforcement. The lender can appoint receivers and sell the property to recover the debt.
- Forced sale pricing. A property sold under enforcement rarely achieves market value, and you remain liable for any shortfall.
The practical lesson: your exit strategy needs to be genuinely deliverable, not optimistic. If your plan is to refinance onto a buy-to-let mortgage, confirm in advance that the property will actually meet standard lending criteria once works are complete — and build in more time than you think you need. Refurbishment overruns are the norm, not the exception.
If you are struggling to meet a repayment, contact the lender early. Options narrow considerably once you are in default.
Where to Get Free, Impartial Help
If you are weighing up borrowing decisions or are already in difficulty, these are free and independent:
- MoneyHelper — government-backed free money guidance
- Business Debtline — free debt advice, including for landlords with property borrowing
- Financial Ombudsman Service — for complaints about regulated products
- FCA ScamSmart — for checking whether an approach is legitimate
The landlords who succeed with BRRR in 2026 are those who do the analysis thoroughly before committing, work with experienced professionals and are realistic about what the numbers need to look like. The opportunity is real — but so are the risks for those who go in underprepared.
One of the most common frustrations landlords face in 2026 is finding a genuinely good rental property at a price that makes financial sense — only to discover that getting the finance to buy it is far more complicated than expected.
Properties that represent real value are often in poor condition. And properties in poor condition are frequently deemed uninhabitable by mainstream mortgage lenders — meaning a standard buy-to-let mortgage is simply not available at the point of purchase.
This guide explains the full landscape of buy-to-let financing in 2026 — including how bridging loans work, how the Buy Refurbish Refinance Rent (BRRR) strategy works, what the real costs are, where the pitfalls lie and how to assess whether a deal actually stacks up before committing.
Why Standard Buy-To-Let Mortgages Don’t Work For Every Property
Buy-to-let mortgages from mainstream lenders typically require a property to be in a lettable condition at the point of purchase. This means it must be structurally sound, have a functioning kitchen and bathroom, be weathertight and — in most cases — have a valid or achievable EPC rating of E or above.
Properties that fail these tests — those with significant structural issues, no working kitchen or bathroom, severe damp or mould, or that are effectively derelict — are classified as unmortgageable or uninhabitable by most high street lenders.
This creates a frustrating situation for landlords looking to add value. The properties with the best potential returns are often the ones that cannot be financed conventionally — precisely because they need the work that would make them valuable.
The solution for many landlords is bridging finance — short-term funding that bridges the gap between purchase and the point where a conventional buy-to-let mortgage becomes available.
What Is A Bridging Loan?
A bridging loan is a short-term secured finance facility — typically lasting between 1 and 24 months — used to fund a property purchase or refurbishment where longer-term mortgage finance is either unavailable, too slow or structurally inappropriate at the time of purchase.
Unlike a buy-to-let mortgage, bridging lenders will fund properties in almost any condition. What they require instead of a habitable property is a clear and credible exit strategy — a defined plan for how the loan will be repaid at the end of the term.
The two most common exits are:
- Refinance — the property is refurbished, reaches a mortgageable condition, and a buy-to-let mortgage is taken out on the improved value to repay the bridging loan
- Sale — the property is refurbished and sold, with the proceeds used to repay the bridging loan
For landlords looking to build a rental portfolio, refinance is typically the preferred exit — allowing them to keep the property and recycle their capital into the next deal.
How Much Do Bridging Loans Cost?
This is where many landlords get an unwelcome surprise. Bridging loans are significantly more expensive than buy-to-let mortgages — and understanding the full cost is essential before committing to any deal.
Bridging loan interest is quoted monthly rather than annually. In 2026, rates typically range from:
- 0.55% to 0.65% per month — the most competitive deals for straightforward cases at low loan-to-value (below 60-65% LTV) with clean credit history
- 0.75% to 1.0% per month — typical for standard residential bridging at 70-75% LTV
- 1.0% to 1.5% per month — higher-risk cases including adverse credit, non-standard property types or higher leverage
At 0.75% per month, a bridging loan of £100,000 costs £750 per month in interest — or £9,000 over 12 months. That is equivalent to approximately 9% per annum, compared to a buy-to-let mortgage rate of around 5-6%.
But interest is only part of the cost. Bridging loans also typically carry:
- Arrangement fees — typically 1-2% of the gross loan amount, payable on completion
- Exit fees — some lenders charge 0-1% of the loan when it is repaid
- Valuation fees — lenders require an independent valuation of both the current value and the post-works value
- Legal fees — both the borrower and lender’s legal costs
- Broker fees — specialist bridging brokers typically charge 1-2% of the loan
On a £100,000 bridging loan over 12 months the total costs — interest, arrangement fee, exit fee, valuation and legal fees — could realistically total £13,000 to £18,000 depending on the lender and deal structure. These costs must be factored into the deal analysis before purchase.
How Much Can Landlords Borrow On A Bridging Loan?
Most bridging lenders will advance up to 75% of the current open market value of the property being purchased — not 75% of the purchase price.
This is an important distinction. If a landlord is buying a property below market value because it needs work, the lender will typically lend against the actual market value — which may be higher than the purchase price. This can work in a landlord’s favour.
For example — a property with a market value of £120,000 that a landlord is purchasing for £90,000 because it needs significant refurbishment. At 75% LTV the bridging lender may advance £90,000 — effectively funding the full purchase price — with the landlord using their own funds for the refurbishment costs.
Some lenders will also factor in the Gross Development Value (GDV) — the estimated value of the property after refurbishment — when calculating how much they will lend. This can allow landlords with strong plans and track records to access higher loan amounts.
What Is The BRRR Strategy?
BRRR stands for Buy, Refurbish, Refinance, Rent — sometimes also called BRRRR with an extra R for Repeat.
It is a property investment strategy built around the idea of purchasing properties below market value, adding value through refurbishment, refinancing onto a long-term buy-to-let mortgage at the improved value, and then renting the property — ideally recycling most or all of the original capital to repeat the process on the next deal.
Here is how the strategy works in theory:
- Buy — purchase a property below market value because it needs work, using bridging finance
- Refurbish — carry out the necessary works to bring the property to a lettable and mortgageable standard
- Refinance — once the works are complete, obtain a buy-to-let mortgage at 75% of the new improved value — ideally repaying the bridging loan and recovering most of the original deposit
- Rent — let the property and generate monthly rental income
- Repeat — use the recycled capital to fund the next deal
A Real Example Of The BRRR Strategy
To illustrate whether the numbers can work, here is a simplified example using realistic 2026 figures:
The purchase
A landlord identifies a property with a market value of £130,000 that is being sold for £95,000 because it needs a full kitchen replacement, bathroom refurbishment, new flooring throughout, redecoration and some electrical work.
The finance
A bridging lender advances 75% of the £130,000 market value — £97,500. This covers the full purchase price of £95,000 with a small surplus. The landlord uses their own funds of approximately £40,000 to cover the refurbishment costs, bridging interest, arrangement fees and other costs.
The refurbishment
The landlord spends £25,000 on works over 4 months. The property is now in excellent lettable condition. An independent RICS valuation confirms a post-works value of £160,000.
The refinance
The landlord obtains a buy-to-let mortgage at 75% of the £160,000 post-works value — £120,000. This repays the bridging loan of £97,500 and returns approximately £22,500 to the landlord.
The result
The landlord started with £40,000 of their own funds in the deal. After the refinance they have recovered £22,500 — meaning their net capital tied up in the property is approximately £17,500, plus the bridging loan costs of perhaps £8,000-10,000 over the 4-5 month period. Total capital tied up — around £25,000-27,500.
The property is worth £160,000 with a mortgage of £120,000 — meaning the landlord has built equity of approximately £40,000. And the property now generates rental income on a long-term buy-to-let mortgage at current rates.
This is why the BRRR strategy appeals to landlords — done correctly it allows capital to be partially or fully recycled while building a rental portfolio and equity position simultaneously.
Why The BRRR Strategy Is Hard In Practice
The example above makes the strategy look straightforward. In practice there are significant challenges that landlords need to understand before committing to this approach.
Finding the right property is extremely difficult
Properties that are genuinely below market value by enough to make the numbers work are rare and highly sought after. Estate agents, developers and experienced investors are all looking for the same deals. Landlords who find a genuinely good deal often need to move very quickly.
Refurbishment costs are hard to predict accurately
Building works almost always cost more and take longer than initially planned. An unexpected structural issue, hidden damp, asbestos or electrical problems can significantly increase costs and reduce the profitability of a deal. Contingency budgets of 15-20% of estimated costs are essential.
The six-month rule affects refinancing
Many buy-to-let mortgage lenders will not offer a mortgage on a property that has been owned for less than six months — known as the six-month rule. This is designed to prevent property flipping. Landlords planning a BRRR strategy need to factor this into their bridging loan term — a 4-month refurbishment may need a 6-7 month bridge to allow for the refinance to complete.
Post-works valuations may not reach expectations
The entire refinance calculation depends on the property being valued at or above the expected post-works figure. If the valuer takes a conservative view — or if the market has moved — the refinance loan may be smaller than expected, leaving more capital tied up in the deal.
Bridging costs eat into returns
Every month a bridging loan remains outstanding costs money. Delays in the refurbishment or the refinance process increase the total bridging cost and reduce the deal’s profitability. Speed of execution is critical.
Buy-to-let mortgage rates remain elevated
Even after a successful refinance, current buy-to-let mortgage rates of 5-6% mean the long-term debt cost is significantly higher than it was three to five years ago. Landlords need to ensure the rental income comfortably covers the mortgage payments after the refinance.
What Should Landlords Check Before Committing To A Deal?
Before committing to any bridging-funded property purchase, landlords should work through the following checklist:
Purchase price and market value
Is there genuinely enough gap between the purchase price and the current market value to make the numbers work? As a rough guide, buying at 25-30% below market value is typically the minimum required to make bridging finance viable.
Refurbishment costs
Get detailed quotes from at least two or three contractors before purchasing — not estimates. Factor in a 15-20% contingency for unexpected costs.
Post-works value
Get an independent view on the realistic post-works value from a local agent or surveyor before purchasing. Be conservative — do not assume the best-case scenario.
Refinance calculation
At 75% LTV on the post-works value, will the refinance repay the bridging loan in full? Will it also return a meaningful portion of the original deposit? If the refinance does not cover the bridging loan there is a serious problem.
Rental yield on the refinanced property
After the refinance, will the rental income comfortably cover the buy-to-let mortgage payments, insurance, maintenance and other costs — and still generate a meaningful return?
Total bridging cost
Calculate the total bridging cost including interest, arrangement fees, exit fees, valuation and legal fees. Add this to the refurbishment cost and the deposit to arrive at the total capital required.
Exit strategy if the refinance fails
What happens if the post-works valuation comes in lower than expected or the refinance falls through? Is the property sellable at a price that repays the bridging loan? Having a fallback exit strategy is essential.
Using A Specialist Broker
Navigating bridging finance and buy-to-let mortgages — particularly for non-standard properties — is complex. The market for bridging finance involves many specialist lenders who do not deal directly with borrowers, and rates and terms vary enormously between lenders.
A specialist broker who works across the bridging and buy-to-let mortgage market can:
- Access lenders not available directly to borrowers
- Match the deal structure to the most appropriate lender
- Negotiate better rates based on deal volume and relationships
- Coordinate the transition from bridging to buy-to-let mortgage to minimise delay and cost
- Advise on deal viability before the landlord commits
For complex deals involving uninhabitable properties, significant refurbishment and a planned BRRR strategy, a specialist broker is not a luxury — it is a necessity.
What Is The Realistic Outlook For BRRR In 2026?
The BRRR strategy works in 2026 — but the margins are tighter than they were three or four years ago. Higher bridging rates, higher buy-to-let mortgage rates and more competition for genuinely undervalued properties mean that deals need to be analysed more carefully than ever.
Landlords who approach BRRR deals with realistic numbers, conservative estimates, experienced contractors and good professional advice can still build profitable rental portfolios through this strategy. Those who rely on optimistic assumptions about refurbishment costs, post-works values or refinance rates are likely to find the reality disappointing.
The key shift in 2026 is that BRRR has moved from being a strategy where mediocre deals could still work to one where only genuinely good deals with strong fundamentals succeed. That raises the bar — but it does not make the strategy unviable for well-prepared landlords.
GOV.UK Guidance
Landlords can find official guidance on buy-to-let tax and compliance obligations here: HMRC Rental Income Guidance
Frequently Asked Questions
What is a bridging loan and when do landlords need one?
A bridging loan is short-term secured finance used to purchase a property that cannot be funded by a conventional mortgage — typically because it is uninhabitable or needs significant refurbishment. It bridges the gap between purchase and the point where long-term mortgage finance becomes available.
How much do bridging loans cost in 2026?
Bridging loan rates in 2026 typically range from 0.55% to 1.5% per month depending on loan-to-value, property type and borrower profile. At 0.75% per month a £100,000 loan costs £750 per month in interest — approximately 9% per annum. Arrangement fees of 1-2% and other costs add to the total.
How much can landlords borrow on a bridging loan?
Most bridging lenders advance up to 75% of the current open market value of the property — not 75% of the purchase price. For properties purchased below market value this can effectively fund the full purchase price.
What is the BRRR strategy?
BRRR stands for Buy, Refurbish, Refinance, Rent. It involves purchasing a property below market value using bridging finance, refurbishing it to add value, refinancing onto a buy-to-let mortgage at the improved value, and renting it out — ideally recycling most of the original capital for the next deal.
What is the six-month rule for buy-to-let mortgages?
Many buy-to-let mortgage lenders will not offer a mortgage on a property owned for less than six months. Landlords planning a BRRR strategy need to factor this into their bridging loan term — typically requiring a bridge of at least six to seven months even if the refurbishment takes less time.
What happens if the post-works valuation is lower than expected?
If the post-works valuation comes in below expectations, the refinance loan will be smaller and may not fully repay the bridging loan. Landlords need a fallback exit strategy — typically the ability to sell the property at a price that covers the outstanding debt.
Do I need a specialist broker for bridging finance?
For non-standard properties and BRRR deals, a specialist broker is strongly recommended. Many bridging lenders do not deal directly with borrowers, and rates and terms vary enormously. A good broker can access better deals, coordinate the bridging to mortgage transition and advise on deal viability.
Can I use bridging finance to buy at auction?
Yes — bridging finance is commonly used for auction purchases where completion is required within 28 days and a conventional mortgage would take too long to arrange. The bridging loan is then repaid through refinance or sale.
What is the minimum discount I need to make BRRR work?
As a rough guide, buying at 25-30% below market value is typically the minimum required for a BRRR deal to work once bridging costs, refurbishment costs and the refinance calculation are factored in. Smaller discounts leave insufficient margin to make the numbers viable.
How do buy-to-let mortgage rates affect BRRR deals in 2026?
Current buy-to-let mortgage rates of 5-6% significantly affect the long-term profitability of BRRR deals. After refinancing, landlords need to ensure rental income comfortably covers the higher mortgage payments — requiring stronger yields than were needed when rates were at 2-3%.
Related Articles
- Is Buy-To-Let Still Worth It In 2026? An Honest Landlord Guide
- Making Tax Digital For Landlords — Everything You Need To Know In 2026
- EPC Rules For Landlords 2026 — Minimum Ratings Explained
- What Insurance Do Landlords Need In 2026?
- The Compliance Deadlines Landlords Cannot Afford To Miss In 2026
- Landlord Compliance Checklist For 2026
- How Tenant Referencing Helps Landlords Avoid Rent Arrears
- What The Renters’ Rights Act Means For Landlords In 2026
Final Thoughts
Financing a buy-to-let property in 2026 — particularly one that needs refurbishment — is genuinely more complex and more expensive than it was a few years ago. Higher bridging rates, elevated buy-to-let mortgage rates, tighter lender criteria and the need to find genuinely undervalued properties all raise the bar.
But the strategy still works for landlords who approach it correctly:
- Find genuinely good deals — properties at least 25-30% below post-works market value
- Get accurate refurbishment costs before committing — not estimates
- Calculate the full bridging cost including all fees — not just the monthly rate
- Model the refinance conservatively — assume lower post-works valuations rather than best-case
- Ensure the long-term buy-to-let mortgage payments are covered comfortably by the rental income
- Always have a fallback exit strategy if the refinance does not go to plan
- Use a specialist broker — the bridging and specialist mortgage market is not one to navigate alone
The landlords who succeed with BRRR in 2026 are those who do the analysis thoroughly before committing, work with experienced professionals and are realistic about what the numbers need to look like. The opportunity is real — but so are the risks for those who go in underprepared.
Sources and further reading
- FCA Financial Services Register — check a firm
- FCA ScamSmart
- MoneyHelper — free government-backed money guidance
- Business Debtline — free debt advice
- Companies House — company search
RentalReadyUK produces plain-English guides for private landlords in the UK. We are not authorised or regulated by the Financial Conduct Authority, we do not sell financial products, and we receive no commission from lenders or brokers mentioned in general terms in this guide. This article is general information and not personal financial advice. Always consult an FCA-authorised adviser before making borrowing decisions.