Bridge Loan for UK Commercial Real Estate: Exiting Development Finance Before the First Tenant Signs

A commercial scheme at practical completion should feel like a strong position. The build is done, the contractor has been paid, and the gross development value is real. But if the lettings campaign is running three to six months behind the construction programme and development finance has reached the end of its term, you face a structural problem that has nothing to do with the quality of the building.

Commercial mortgage lenders underwrite against income, not bricks. They need a rent roll with signed leases in place before they'll offer even a Decision in Principle. A completed but vacant office block, retail unit or mixed-use scheme simply doesn't qualify, regardless of its specification or location. The building that should be your exit route is inaccessible.

A bridge loan for commercial real estate can clear that development facility, remove the repayment clock, and give the lettings campaign room to run properly. It is sized against the completed asset's value, not its income, and exits when the first lease is signed, a forward sale completes, or you refinance against an established rent roll.

Why Commercial Mortgage Lenders Won't Fund a Vacant Scheme

Commercial term lenders apply a Debt Service Coverage Ratio test: the property's rental income must comfortably exceed the debt payments. No leases, no income, no DSCR. A scheme might carry a headline GDV of £15M and a prime city-centre location. But if the floor plates are empty, a high-street lender or challenger bank will decline without a rent roll behind it.

Development finance compounds this pressure. These facilities are priced for construction risk, not operational carry, and they typically run on terms aligned with the build programme rather than the marketing timeline. When the contractor hands over the keys, the development lender expects repayment within weeks, not months.

The result is a gap: a building that is physically complete, commercially viable, and theoretically worth refinancing, but locked out of term lending until it proves its income. Our developer exit bridging loans are structured precisely for this window, holding the position while the letting campaign converts.

How a Bridge Loan Is Sized on Completed Commercial Property

A bridge loan against a completed commercial asset is underwritten against the property's open-market value in its current vacant state. The lender commissions an independent RICS Red Book appraisal reflecting what the building would fetch today with vacant possession, to an active buyer in the market.

We lend up to 75% of that value on commercial bridging loans, with terms from 3 to 24 months and loan sizes from £1M to £100M. Interest is typically rolled up and added to the loan balance, so there's no monthly payment to service during the letting period: the full cost settles at exit.

The exit takes one of three forms: a signed lease triggering a commercial term refinance, a completed forward sale to an investor, or a portfolio refinance once the income base is established. Lenders will want to see a credible exit strategy with timelines before committing. Partial income helps: heads of terms or signed short-form leases on part of the space can support the valuation position and LTV.

Related: see how we structured an £18.8M facility against a West London hotel when the income-based refinancing timeline wasn't aligned with the borrower's existing facility.

When a Commercial Developer Exit Bridge Works, and When It Doesn't

This structure makes sense when the scheme is genuinely complete: building regulations sign-off secured, practical completion certificate issued, and the asset in a condition a tenant could actually occupy. The bridge buys time; it is not a mechanism to finish the build after the fact.

The letting pipeline matters. A bridge against a vacant commercial building is a credible proposition. There should be an active lettings agent, heads of terms in negotiation on at least part of the space, or a known purchaser in due diligence. "We expect to let it eventually" is not a viable exit. Lenders want to see the realistic timeline, the letting agent's instructions, and where possible, evidence of market interest.

It is the wrong tool if the GDV cannot support the loan size you need, or if the income void is likely to exceed the maximum term. If the building requires material work before a tenant will commit (EPC remediation, fit-out, or planning amendments), factor those timelines into whether a 3 to 24 month bridge is actually long enough. The Bank of England's base rate affects what bridge finance costs to hold, and the structure performs best when the exit is 3 to 6 months out rather than speculative. Our article on bridging loans for commercial landlords facing EPC deadlines covers how minimum energy efficiency requirements can shift the letting timeline on recently completed commercial stock.

For the mechanics of what we need from day one, our lending process page sets out the documentation so you can move quickly.