Development Finance Explained.

How ground-up development loans work, what lenders assess, and how to structure your funding.

Development finance is specialist short-term lending used to fund ground-up construction, heavy refurbishment, and change-of-use projects. It works differently from standard mortgages in almost every respect — from how funds are released to how lenders assess risk. This guide covers the fundamentals that every developer, whether building their first scheme or their fiftieth, needs to understand.

Development Finance Guide

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1

How development finance is structured

Unlike a standard mortgage where the full loan is released on day one, development finance draws down in stages as the build progresses. An initial advance is made on purchase, with further tranches released as construction milestones are certified by a monitoring surveyor appointed by the lender. This staged drawdown means you only pay interest on funds you have actually received.

The loan has two components: the land or purchase element (typically 65–70% of the purchase price) and the build cost element (typically 80–100% of certified construction costs). The headline leverage is usually expressed as a percentage of Gross Development Value (GDV) — the expected sale price of the completed scheme — with most lenders advancing up to 65–70% of GDV in total.

2

What lenders assess

Development lenders focus primarily on three things: the scheme, the exit, and the developer. The scheme assessment covers the site, planning consent, build cost schedule (usually independently validated by a quantity surveyor), and GDV supported by comparable sales evidence from a local RICS-registered agent.

The exit is the lender’s primary concern — how will the loan be repaid? For residential schemes, exit is typically by sale of completed units. The lender will want to understand demand in the local market and may stress-test the GDV downwards. For commercial or mixed-use schemes, refinance onto long-term investment finance is a common exit.

Developer track record matters significantly. First-time developers will face more scrutiny and lower leverage. Lenders want evidence of project management experience, construction knowledge, and financial resilience. Working with an experienced main contractor can partially offset limited personal track record.

3

The role of the monitoring surveyor

The monitoring surveyor (also called a project monitor or bank's surveyor) is appointed by the lender but paid for by the borrower. They visit the site at each drawdown stage, certify that work has been completed to specification and budget, and recommend whether the next tranche should be released.

A good monitoring surveyor relationship is valuable — they are the mechanism by which cash flows to the project. Delays in site visits or disputes over certification can stall drawdowns and disrupt the build programme. Experienced developers factor monitoring surveyor relationships into their project management from the outset.

4

Interest, fees, and total cost

Development finance is priced monthly, typically at 0.75–1.5% per month depending on leverage, scheme type, and developer experience. Interest is usually retained — deducted from the loan at the outset rather than paid monthly — which means you do not need income to service the debt during the build.

Arrangement fees of 1–2% of the loan are standard. You will also pay for the monitoring surveyor, independent valuation, and legal costs for both your solicitor and the lender’s solicitor. On a £2 million facility, total finance costs including interest, fees, and professional costs might run to £180,000–£250,000 over an 18-month term.

5

Development exit finance

Once a development is practically complete — typically wind and weather tight with services connected — it is eligible for development exit finance. This is a cheaper form of bridging that allows you to repay the expensive development facility early and sell units from a lower cost base.

Development exit rates are typically 0.4–0.7% per month, compared to 0.75–1.5% for the development facility itself. On a large scheme, switching to exit finance three months before the last unit sells can save tens of thousands of pounds in interest.

What to remember from this guide.

Funds draw down in stages as build milestones are certified — you pay interest only on drawn funds
Lenders advance up to 65–70% of GDV; leverage depends on scheme quality and developer track record
A quantity surveyor's cost report and RICS valuation are typically required before lenders will credit-approve
Interest is usually retained upfront — no monthly servicing required during the build
Development exit finance reduces costs once the scheme is complete — switch early to maximise profit