Bridging Finance for Property Development: A Practical Guide

Bridging finance is a short-term secured loan designed to bridge a funding gap until longer-term finance is arranged or a property is sold. For property developers, it is one of the most versatile tools available — enabling acquisitions at speed, funding pre-planning site purchases, covering light refurbishment works, and providing a short-term hold while a development exit or sale completes.

Unlike a conventional mortgage, a bridging loan is not assessed on rental income or the borrower's employment history. Lenders focus on two things: the value of the underlying security and the credibility of the exit strategy. This makes bridging finance accessible in situations where a property is unmortgageable, uninhabitable, or in a transitional state between acquisition and its intended end use.

Bridging loans for property development are available against residential, commercial, mixed-use, office, industrial, and land assets. Loan sizes typically start at £50,000 and can extend to £25M or more through specialist lenders, with terms running from one month to 24 months. If you are exploring a bridging loan for a development project, understanding the mechanics before approaching lenders will put you in a considerably stronger negotiating position.

A development bridging loan is secured by way of a first or second legal charge over the subject property. First charge lenders have priority in any enforcement scenario and will typically advance up to 70–75% of the open market value (OMV) of the security. Where a second charge lender is involved — sitting behind an existing mortgage or first charge — the combined loan-to-value across both facilities is usually capped at 65–70%.

Interest is calculated monthly rather than annually. Current market rates for property development bridging finance range from approximately 0.55% to 1.2% p.m., depending on asset type, LTV, loan size, and borrower profile. Because most developers cannot afford to service interest monthly during an active project, lenders typically offer two structures: rolled-up interest (added to the loan balance and repaid on exit) or retained interest (deducted from the initial advance at the outset). Both approaches preserve working capital during the development period but reduce the net funds received on day one.

Drawdown is usually in a single tranche following legal completion, which typically takes two to six weeks from application. This is a key structural difference from development finance, where funds are released in stages as build milestones are verified by a monitoring quantity surveyor. The single-tranche structure keeps the bridging process faster and simpler, but it also means your build funding plan must be clearly defined before drawing down.

The two products serve different stages of a development project and carry materially different cost, speed, and structural characteristics. Many developers use bridging finance to acquire a site and secure planning permission, then refinance onto a development finance facility for the build phase. Understanding which product fits which phase prevents expensive mismatches. For a deeper analysis, see our guide on development finance vs bridging loans.

The headline answer is that most lenders will advance up to 70%–75% of the open market value (OMV) of the security on a first charge bridging loan. So, on a £1m property, expect up to £700,000–£750,000 on a straightforward first charge deal. Second charge structures reduce this — combined first plus second charge typically caps at 65%–70% LTV, meaning the additional amount available once an existing mortgage is factored in can be modest.

For refurbishment and conversion projects, specialist lenders will sometimes assess the deal against the gross development value (GDV) rather than the current OMV. A property worth £400,000 today that will be worth £650,000 after works, for example, might support a 65% GDV-based facility of around £420,000 — providing a mechanism to fund acquisition and most of the works within a single bridge. This GDV approach typically requires detailed planning permission, a fully costed schedule of works, and evidence of the developer's track record.

Loan sizes range widely. Specialist bridging lenders operate from around £50,000 at the lower end, with mainstream specialist and challenger bank lenders routinely advancing single-unit facilities of £250,000 to £5m. For larger schemes, institutional-scale lenders advance facilities of £10m to £50m-plus, priced more tightly as specialist lenders compete actively on larger tickets. Lenders such as Paragon, Together, Shawbrook, and a range of private credit funds are all active across different parts of this size spectrum, with each having its own sweet spot on deal size, asset class, and LTV tolerance.

The exact number you can borrow on any given deal is a function of: the asset type (residential attracts higher LTV than commercial; specialist asset classes such as student accommodation, HMOs, hotels, and care homes sit narrower); the quality and condition of the property; the strength and credibility of the exit; the borrower's track record; and the specific lender's live appetite. An experienced broker will model several lender scenarios in parallel before a formal application is submitted, so you understand the maximum achievable before committing.

The true cost of a bridging loan extends well beyond the headline monthly rate. Developers who compare facilities on rate alone frequently underestimate their total cost of capital. The table below sets out the key cost components you should model in your development appraisal before committing to any bridging facility.

To illustrate the cumulative impact: on a £500,000 bridging loan at 0.85% p.m. for nine months, with rolled-up interest and a 1.5% arrangement fee, the total cost of funds before valuation and legal fees reaches approximately £46,000–£49,000. Adding those costs brings the all-in figure to roughly £52,000–£57,000. Modelling the full cost scenario against your development appraisal — rather than focusing solely on the monthly rate — is the discipline that separates experienced developers from those who encounter unpleasant surprises at the exit stage.

Bridging lenders operating in the UK property development space assess three core underwriting questions: is the security adequate; is the exit credible; and does the borrower or their team have the experience to deliver? Within those parameters, the range of qualifying project types and asset classes is broad.

• Auction purchases — 28-day completion is routinely achievable with an experienced broker; see our guide on bridging loans for auction purchases
• Unmortgageable residential properties — properties without a functioning kitchen or bathroom, or with structural issues that prevent standard mortgage lending
• Permitted development conversions — office-to-residential, retail-to-residential, or barn conversions requiring works before a mortgage can be placed
• Pre-planning land acquisition — purchasing a development site where planning permission is being sought but has not yet been granted; once detailed planning consent is in place the bridge typically refinances onto a development finance facility
• Light to moderate refurbishment — cosmetic or moderate structural works that do not require a fully staged development finance facility
• Development exit bridging — replacing a development finance facility on a completed scheme while units sell, reducing the ongoing interest burden
• Specialist asset classes — student accommodation, HMOs, hotels, care homes, and other operational property where lender appetite is narrower but still available through specialist desks
• Commercial property — retail, office, mixed-use, and industrial assets that fall outside standard residential mortgage criteria

Lenders will consider properties across England, Scotland, Wales, and Northern Ireland. Assets with no realistic planning or development exit — for example, protected land with no achievable permitted use change — will not qualify. Working with a broker that has access to 100+ specialist and challenger bank lenders is the most reliable way to identify which lenders are comfortable with your specific asset type and risk profile.

The bridging finance market is fragmented across dozens of specialist lenders, challenger banks, and alternative finance platforms, each with different underwriting appetites, rate structures, and speed capabilities. The same development project can attract materially different offers depending on which lenders are approached and how the case is packaged and presented. Approaching lenders directly — particularly the wrong lender first — carries the risk of a declined application that other lenders may subsequently view negatively.

A specialist broker with long-standing lender relationships can identify which lenders are best suited to your project before any formal application is made, present the case in its strongest form, and negotiate pricing that a borrower approaching the same lender directly is unlikely to achieve. Backed by Matt's 25+ years in property finance and over £500M arranged across his career, Construction Capital works across the full spectrum of bridging scenarios — from straightforward residential acquisition bridges to complex commercial and mixed-use development situations. For further context on how lender type affects available terms, see our guide on bank vs specialist development finance.

The application process for a development bridging loan typically involves four stages: indicative terms (usually issued within 24–48 hours of enquiry), formal credit assessment, RICS valuation, and legal completion. From enquiry to drawdown typically takes two to six weeks, though straightforward cases with experienced borrowers and readily valueable securities can move faster. Preparing your documentation in advance — title information, identity documents, schedule of works if applicable, and exit evidence — materially reduces the timeline and demonstrates to lenders that you are a credible, organised borrower.