Residential development finance explained

What is residential development finance?

Residential development finance is a short-term facility that funds the building of new homes, from a single conversion to a large multi-unit scheme. It is secured against the development site and is designed to lend against something that does not yet exist: a parcel of land and a set of drawings that will become finished homes. Because the site produces no income while it is being built, the finance is structured around the build itself, advanced in stages as the scheme rises and repaid in a single event when the homes are sold, let or refinanced.

This is business funding for developers and development companies, not a mortgage for a homeowner. It covers two things: the land and the build cost of the residential scheme, plus the professional fees, finance costs and contingency that sit around them. A residential developer uses it to bridge the gap between buying a site and turning it into homes that can be sold or let, at which point the loan is cleared. The UK housing need that drives demand for these schemes is acute: net additional dwellings in England ran at 208,600 in 2024/25, below the 300,000 target (MHCLG), against projected household formation of about 242,000 a year (ONS).

What does residential development finance fund?

A residential development facility funds the whole cost of getting a scheme out of the ground. The land element is usually advanced at the start, then the build cost is released in drawdowns as work is completed and certified. Around those two big numbers sit the professional fees, the finance costs and a contingency, all of which the appraisal must capture, because the lender lends against total development cost, not just bricks and mortar.

Residential development finance funds new-build housing, apartment blocks, conversions and mixed-use schemes with a residential majority. What it does not do is sit on a finished, income-producing building for the long term: that is the job of investment or term finance, which takes over once the scheme is complete and let. Planning consent matters throughout, because a lender wants to fund a scheme it knows can be built as drawn, and full planning consent opens the widest pool of lenders on the best terms.

How residential development finance is sized

Residential development finance is sized on two tests applied together. Loan to cost measures the loan against the total development cost and commonly reaches around 60 to 65% on senior debt. Loan to GDV measures it against the gross development value of the finished scheme and commonly reaches around 70 to 75%. The lender lends the lower of the two, so a developer needs to model both to know which one binds and how much equity it must find. On a keenly valued scheme the loan to cost usually bites first; on a tighter-margin scheme the loan to GDV can be the limit.

Gross development value, or GDV, is what the finished scheme is worth: for a scheme built to sell, the aggregate of the unit sale values; for a scheme built to let, the stabilised net operating income capitalised at the market yield. Where senior debt alone does not reach the leverage a developer wants, a mezzanine layer or equity can stretch total leverage to around 80 to 90% loan to cost at a higher cost. We model the whole stack together, because the headline senior rate is only part of the picture once a junior tranche is added.

Day-one advance and the total facility

It helps to separate two numbers a developer often confuses. The day-one advance is what the lender releases at completion of the land purchase, usually a percentage of the site value or cost. The total facility is the full commitment, including the build cost that will be drawn in stages and the interest that will roll up over the term. A developer needs both: enough on day one to acquire the site, and enough committed in total to build the scheme out.

An independent monitoring surveyor acts as the lender's eyes on site, inspecting progress and certifying each drawdown against the cost plan before the lender releases it. This protects the lender, because money follows value into the ground, and it keeps the developer's interest bill down, because interest accrues only on what has actually been drawn. We make sure the cost plan and contractor information are in order before an application goes in, because a credible build budget is as important to a lender as the value of the finished homes.

How build to rent development finance differs

Build-to-rent development finance is a type of residential development finance, sized and drawn in the same way, but tuned to a scheme that is held and let rather than sold unit by unit. The difference shows up at the exit. A scheme built to sell repays its development finance from the aggregate of individual sales. A build-to-rent scheme is a single asset, so its GDV is the stabilised net operating income capitalised at the market yield, and its exit is a sale to an investor, a forward sale or a refinance onto long-term investment finance.

That exit difference feeds back into the build finance. A build-to-rent lender underwrites the rents, the gross-to-net and the stabilised occupancy as hard as the build cost, because the value rests on the income, not on sales evidence. It also has to bridge a lease-up period after practical completion, often with development exit finance, before the scheme stabilises. UK build-to-rent investment reached about £5.3bn in 2025 (Savills), so the funder pool for these schemes is now deep, and we steer each case to the lenders most active on its profile.

Who lends and how to arrange it

Residential development finance comes from a fragmented mix of sources: high-street and challenger banks, specialist development lenders, debt funds and, for build-to-rent, institutional forward funders. Appetite shifts with the cycle, the scheme size and the developer's track record, so the lender that suits a £2m conversion is rarely the one that suits a £40m multifamily block. Using an arranger who knows which funder is active on a given profile saves wasted applications and usually improves the terms.

To arrange a facility, a developer needs a clear appraisal showing the total cost, the GDV and the assumptions behind it, the planning status, the build contract and the exit. We package that into a credit case, take it to the funders most likely to back it, and model the all-in cost across competing offers. Lending to a developer or development company is unregulated commercial lending outside the FCA mortgage perimeter; where a case is a regulated mortgage, for example an individual borrowing against a home they occupy, we refer it to an authorised firm. All figures here are indicative and never an offer of credit.