Development Lending for UK Property Projects

A development site can look profitable on a spreadsheet and still be impossible to fund on the terms assumed. Development lending is not simply a loan against a plot or finished value. It is a structured facility that must cover the acquisition, the build programme, cost overruns and, crucially, a realistic route to repayment.

For a small developer, landlord undertaking a conversion or investor moving into ground-up schemes, the right funding structure can protect cash flow and prevent expensive delays. The wrong one can leave a project short of money halfway through the build, even where the eventual sale values are sound.

What is development lending?

Development lending funds property schemes where value is being created through construction, conversion, refurbishment or permitted development. It can be used for land with planning, a partly completed site, a commercial-to-residential conversion, a new-build project or a development exit once practical completion has been reached.

Unlike a standard mortgage, funds are normally released in stages. The lender advances an initial amount to acquire the site or refinance existing borrowing, then releases further drawdowns as works are completed. A quantity surveyor, often called a QS, monitors progress and confirms whether each stage of work supports the next release.

This is why the headline rate is only one part of the decision. You also need to understand the lender’s day-one loan-to-value, loan-to-cost and gross development value limits, the treatment of interest, fees, contingency and the timing of every drawdown.

How lenders assess a development facility

Most lenders start with three figures: the current value or land value, total development cost and GDV. GDV means gross development value – the anticipated open-market value once the scheme is complete. It is an estimate, not a guarantee, and lenders will apply their own valuation assumptions rather than rely solely on an agent’s appraisal.

Day-one LTV is the percentage of the property’s current value that can be advanced at completion. It matters most where you are buying land or an existing building. A scheme may offer a high percentage of costs over time, but a lower day-one LTV can still mean you need a substantial deposit on day one.

Lenders will also look closely at the developer’s experience, build contract, professional team, planning position, comparable evidence, projected sales rates and contingency. A first-time developer is not automatically excluded, but the lender may require more capital in, stronger contractor credentials, additional security or a more conservative loan amount.

The proposal needs to answer straightforward questions clearly: who is building it, what will it cost, when will it be complete, what happens if it costs more, and how will the loan be repaid? Where there is a limited company or SPV, lenders also assess the directors and may require personal guarantees.

Build costs and contingency are not optional details

An accurate cost plan is essential. Lenders generally expect a sensible contingency, particularly for conversions, older buildings and sites with abnormal costs. Planning conditions, utility connections, party wall matters, ground conditions and delays to building control sign-off can all affect time and money.

From our experience arranging these cases, schemes most often stall when the cost plan is too lean or the borrower assumes drawdowns will arrive automatically. Underwriters query unexplained build figures, weak contractor terms, missing planning documents and optimistic completion dates. A QS can only certify work that is actually complete, so a delayed stage can put pressure on both the programme and the developer’s cash contribution.

Staged drawdowns and interest: how the cash flow works

A development facility is usually not paid in full at the outset. The acquisition advance is released first, with build funds drawn in arrears or, in some cases, against a pre-agreed schedule. Each lender has its own process, including minimum drawdown sizes, inspection fees and notice periods.

Interest can be serviced, retained or rolled up. With serviced interest, the borrower pays monthly interest from income or available cash. Retained interest is set aside from the facility at the beginning to cover future payments, reducing the cash available for the project. Rolled-up interest accrues and is paid when the facility is redeemed, which helps monthly cash flow but increases the final balance.

There is no universally best option. Serviced interest may reduce the redemption figure but requires reliable cash flow. Rolled-up interest can suit a project with no rental income during construction, but it must be included properly in the exit calculation. The facility also needs to account for arrangement fees, valuation, legal fees, QS monitoring and potential extension costs.

Before committing, use a development finance calculator to test the likely borrowing requirement, interest treatment and LTV position. It is a useful starting point, but a calculator cannot replace a lender-specific appraisal of costs, valuation and the drawdown schedule.

The exit strategy matters as much as the build

Every development loan needs a credible exit strategy. For many schemes, this is the sale of completed units. For others, it is refinancing onto a buy-to-let mortgage, commercial mortgage or longer-term investment facility. Larger developments may use a development exit loan to repay the construction lender while remaining units are marketed and sold.

Selling can be the cleanest exit, but it exposes the project to market timing and sales delays. Refinancing can retain the asset and create rental income, but affordability, rental coverage and completed valuation must support the new loan. If you plan to refinance, check the intended lender’s criteria before construction starts, especially for HMOs, flats above commercial premises, specialist property or company-owned stock.

A development exit can provide time after practical completion, often without the pressure of ongoing construction monitoring. However, it is still short-term funding and should not be used to postpone a problem. The remaining units need a clear sales strategy or a viable refinance route.

When development finance is not the best fit

Not every property project requires a full development facility. A light refurbishment with a short programme may be better suited to refurbishment bridging, especially where the works do not require major structural changes. Bridging can complete quickly and may be appropriate for an unmortgageable purchase, auction deadline or chain-break, but it is expensive short-term money and needs a defined exit.

Equally, a site with uncertain planning, unresolved title issues or no reliable build-cost evidence may need work before it is finance-ready. Trying to force an application through too early can waste valuation and legal costs. In some cases, securing planning, appointing the right professionals or revising the scheme reduces risk and produces better funding options later.

Structuring the facility before you exchange

The best time to assess development lending is before you are committed to the purchase. A broker can compare the likely day-one advance, total facility, GDV cap, interest method and lender appetite for the specific asset. That comparison should include the practical details: how quickly valuations are instructed, whether the lender accepts your contractor, how drawdowns are certified and whether the proposed exit fits their policy.

At Your Financial Assurance, we structure property finance around the whole project rather than a single headline figure, managing lender discussions, valuation, legals and drawdown requirements from enquiry through to completion. For a development, the aim is simple: enough funding at the right stages, with a repayment plan that still works if the programme or sales period takes longer than hoped.

A well-prepared scheme gives lenders confidence, but it also gives you a clearer decision before your own capital is at risk. Build the funding plan around conservative costs, realistic timing and an exit you can evidence – not the best-case outcome on a spreadsheet.

Lending is subject to status, valuation and lender criteria. Unregulated bridging, buy-to-let and most development finance are not regulated by the Financial Conduct Authority.