Bridging Loans for Property UK: How They Work and When to Use One

A bridging loan is short-term secured finance designed to bridge a funding gap — typically when you need to complete on a property before longer-term finance is in place. Used correctly, a bridge can unlock deals that would otherwise fall through. Used carelessly, the costs spiral fast. This guide explains exactly how bridging finance works, what it costs, and when it makes sense.

What Is a Bridging Loan?

A bridging loan is a short-term loan — typically 1 to 24 months — secured against property. Unlike a residential mortgage, it is designed to be repaid quickly, either through the sale of a property or by refinancing onto a longer-term mortgage.

Open vs Closed Bridge

Closed bridge: You have a confirmed exit strategy — for example, a completion date on a sale already exchanged. Lower risk for the lender, so rates are typically at the lower end of the range. Usually available for up to 3–6 months.

Open bridge: No confirmed exit date. You may intend to sell or refinance, but nothing is legally committed. Higher risk for the lender; rates are higher and maximum terms shorter. Lenders will still want a credible, plausible exit — "I'll sell it eventually" is not sufficient.

First vs Second Charge

First charge: The bridging lender holds the primary security over the property. Applies when there is no existing mortgage on the asset.

Second charge: The bridge sits behind an existing first charge mortgage. This means the bridging lender's security is subordinate — they get paid after the first charge lender if there is a default. Second charge bridging is more expensive and carries more risk for both parties.

When Would You Use a Bridging Loan?

Bridging finance is used in specific circumstances where speed or flexibility is more important than cost:

• Chain break: You've found a property you want to buy but your existing home hasn't sold. A bridge lets you complete the purchase, then repay when your current property sells.
• Auction purchase: Traditional auctions require exchange on the day and completion within 28 days. Standard mortgages cannot move that quickly. Bridging finance — arranged in advance — can.
• Uninhabitable property: Mainstream mortgage lenders will not lend on properties without a working kitchen or bathroom, severe structural damage, or properties classed as uninhabitable. A bridge funds the purchase and refurbishment; you then refinance to a standard mortgage or BTL.
• Development finance: Larger bridging facilities (sometimes called development finance) fund ground-up development or major conversion projects, drawing down in tranches as works complete.
• Commercial to residential conversion: Bridging lenders are comfortable with Class MA or permitted development conversions where mortgage lenders won't touch the asset in its current state.

What Does a Bridging Loan Cost?

Bridging finance is expensive relative to a mortgage. Costs include:

Total Cost Example: £200,000 Bridge for 6 Months

Assume a rate of 0.75%/month, 1.5% arrangement fee, no exit fee:

• Interest (rolled up): £200,000 × 0.75% × 6 months = £9,000
• Arrangement fee (1.5%): £3,000
• Valuation: £900
• Borrower legal fees: £1,200
• Lender legal fees (borrower-pays): £1,000
• Total cost of borrowing: approximately £15,100 over 6 months

That is 7.5% of the loan amount for six months of access to capital. The faster you can exit, the lower the total cost.

Rolled-Up vs Serviced Interest

Most bridging loans offer rolled-up interest, meaning monthly interest is added to the loan balance rather than paid monthly. This helps cash flow during a renovation, but the compounding effect increases the total cost. Some lenders offer serviced or part-serviced options where you pay interest monthly, which reduces the total repayment but requires monthly income to service.

LTV: GDV vs OMV

Bridging lenders assess security in one of two ways depending on the purpose of the loan:

Open Market Value (OMV): The current value of the property as it stands. Standard bridging lenders will typically lend up to 70–75% of OMV.

Gross Development Value (GDV): The projected value of the property after completion of the planned works. Development finance lenders will often lend up to 65–70% of GDV, which allows a higher loan relative to the current property value — important for refurbishment projects where the property is worth significantly less in its current condition.

Regulated vs Unregulated Bridging

Regulated bridging falls under FCA regulation and the Mortgage Credit Obligations (MCOB) rules. A bridge is regulated where the security is a property that the borrower (or a close family member) intends to occupy. This applies to chain-break bridging on a main residence, for example.

Unregulated bridging applies to investment property, development, and commercial assets where the borrower is not occupying the security. The FCA does not regulate these products, though lenders are still expected to act in good faith and the ASTL (Association of Short Term Lenders) has its own code of conduct.

If you are bridging to buy your next home before your current home sells, you will be dealing with a regulated product and should use an FCA-authorised broker.

How to Exit a Bridging Loan

Lenders take your exit strategy seriously — it is the first thing underwriters assess. Common exits include:

• Sale of the bridged property: Most common. You complete works, sell, and redeem the bridge at completion.
• Sale of another property: If you bridged to avoid breaking a chain, selling your previous home redeems the bridge.
• Refinance to a residential mortgage: Once a property is habitable and mortgageable, you refinance to a standard residential mortgage.
• Refinance to a buy-to-let mortgage: After a refurbishment, if you plan to retain the asset as a rental, you refinance to a BTL product at the end of the bridge term.

Your exit must be credible at the outset. Lenders will require evidence — an accepted offer, mortgage in principle, planning consent — depending on the exit type.

Risks of Bridging Finance

Bridging loans carry significant risk if the exit does not materialise on time:

• Rolled-up interest compounds quickly. At 0.9%/month, a £200,000 loan grows to approximately £222,000 after 12 months before fees. Delays cost real money.
• Default gives the lender possession rights. If you cannot repay and cannot refinance, the lender can appoint a receiver to manage or sell the property. You remain liable for any shortfall.
• Valuation risk. If market values fall during the term, your exit may not cover the loan balance — particularly relevant on higher LTV bridges.
• Refinance risk. If you intend to refinance but cannot get a mortgage at the end of the term (due to credit issues, property condition, or market changes), your exit fails.

How to Find a Bridging Lender

Bridging finance is not available from high street banks. You will need to approach a specialist lender directly or through a broker. Key sources:

• ASTL members: The Association of Short Term Lenders (astl.org.uk) lists its member lenders, all of whom subscribe to a code of practice.
• Specialist whole-of-market brokers: A good bridging broker will access multiple lenders and negotiate on rate, fees, and terms. Look for brokers who are FCA-authorised (for regulated bridges) and NACFB members.
• Do not use comparison sites for bridging. Bridging deals are structured individually — the headline rate on a comparison site rarely reflects the full cost or the terms available to your specific case.

When a Bridging Loan Makes Sense — and When It Doesn't

It makes sense when:

• You have a clear, credible, near-term exit (sale exchanged, mortgage in principle secured)
• The cost of the bridge is justified by the deal (e.g. an auction purchase at significant below-market value) — see our complete guide to buying at auction UK for how to assess whether the deal stacks up
• A standard mortgage is genuinely not available (uninhabitable property, auction timescale)
• You can service or tolerate rolled-up interest during the term

It doesn't make sense when:

• Your exit is speculative or depends on factors outside your control
• The cost erodes the margin you were hoping to make
• You could use a standard mortgage with a short extension instead
• You are under financial pressure already — bridging amplifies stress, not relieves it

If you're planning to purchase and renovate a property using bridging finance, the renovation itself needs to be well-planned to protect your timeline and your exit. Renovate Me gives you a step-by-step renovation roadmap — from initial assessment through to completion — so you can move confidently from bridge to mortgage on time and on budget.

For a detailed guide specifically covering uninhabitable properties — what lenders class as uninhabitable, specialist lenders by name (Shawbrook, Together, Precise, Aldermore, Keystone, Fleet, Landbay), regulated vs unregulated bridging, and a worked cost table for a £150,000 loan over nine months — see Getting a Mortgage on an Uninhabitable Property in the UK.