Property Development Finance: A Guide for UK Developers
Mark Grant
Relationship Manager · Mar 29, 2026 · 9 min read
Property development finance funds the construction of new residential, commercial, or mixed-use developments in the UK. Whether you are building your first 4-unit scheme or your fifteenth 100-unit site, understanding how development finance is structured, assessed, and priced is essential before committing to any development appraisal.
How development finance is structured
Development finance is structured around the Gross Development Value (GDV), the projected value of the completed scheme. The lender advances funds against a percentage of GDV (typically 55-65 percent) and up to 80-90 percent of the total development costs (land plus build). The remaining gap is covered by the developer's equity contribution, typically in the form of land equity (if the land is already owned with a low existing charge) or cash.
Funds are drawn down in stages as the development progresses, with each drawdown verified by an independent monitoring surveyor who inspects the works and certifies the draw in line with the agreed schedule. This staged drawdown means you are not paying interest on the full facility from day one, only on amounts drawn, which significantly reduces the overall finance cost.
What development lenders assess
The development appraisal is the central document in any development finance application. It must demonstrate: a credible land purchase price (supported by a RICS valuation), realistic build costs (supported by a quantity surveyor's report or detailed contractor quotes), a realistic GDV (supported by a comparable evidence report from a local agent), and a development programme with realistic timescales.
The developer's track record is the second most important factor. Experienced developers with a portfolio of completed schemes at similar scale access better rates and higher LTVs than first-time developers. First-time developers are typically restricted to 50-55 percent of GDV and will face higher arrangement fees and potentially a requirement for an experienced project manager.
"The development finance market rewards developers who do their homework. A deal backed by a credible appraisal, an experienced team, and a clear exit is one lenders compete for. A deal without these is one they avoid."
- Mark Grant, Relationship Manager, Spark Finance
Mezzanine finance: bridging the equity gap
If senior development finance covers 55-65 percent of GDV and the developer can only contribute 15-20 percent in equity, there is a gap. Mezzanine finance bridges this gap, sitting between the senior debt and the developer's equity in the capital structure. Mezzanine is significantly more expensive than senior finance (rates of 15-25 percent per annum are common) but allows developers to do larger schemes with less equity of their own.
Mezzanine providers take a second charge on the development site behind the senior lender and typically receive a combination of interest and an equity stake (profit share) from the completed development. Not all senior development finance lenders are comfortable with mezzanine in the stack: check with Spark Finance which senior lenders on the panel accept mezzanine before structuring the deal.
Exit: sales, refinancing, and planning for exit before you start
Development finance lenders are intensely focused on the exit because their repayment depends entirely on it. For residential schemes, the exit is typically sales of completed units, and the lender will want to see either pre-sales (exchange of contracts before the development starts) or a credible sales programme from a local sales agent with recent comparable transactions.
For commercial developments, the exit is typically a long-term investment mortgage once the building is let. Having a credible tenant pipeline or heads of terms with an occupier before applying for development finance significantly strengthens the application and can improve the LTV available.
The bottom line
Spark Finance works with specialist development finance lenders for residential, commercial, and mixed-use schemes of all scales. Apply at apply.sparkfinance.co.uk to discuss your development finance requirements.
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