Development Finance UK:
How It Works
Development finance is a short-term specialist lending facility used to fund construction, conversion, or heavy refurbishment of property in the UK. It is drawn in staged tranches aligned to the build programme and assessed primarily against the Gross Development Value (GDV) of the completed scheme.
EAS Finance arranges development finance for ground-up residential, mixed-use, and conversion schemes across the UK — structured around the build programme and assessed from the deal outward, across a panel of 300+ specialist lenders.
What is development finance?
Development finance is a short-term specialist lending facility used to fund the construction or conversion of property. Unlike a standard mortgage, which is advanced as a lump sum against an existing asset, development finance is drawn in staged tranches aligned to the build programme and monitored throughout.
The loan is assessed primarily against the Gross Development Value (GDV) — the anticipated market value of the completed scheme — rather than only the current value of the site. This allows lenders to fund schemes where the current asset value is insufficient to support the full funding requirement.
It is a distinct product from bridging finance, which is typically used for acquisition or light refurbishment, and from land finance, which funds the site purchase before construction begins.
Development finance is not simply expensive bridging. It is assessed on GDV, drawn in stages, monitored throughout the build by an independent surveyor, and priced to reflect construction risk — not just asset value.
How development finance works
The mechanics follow a defined sequence. Funds are released progressively as the build advances — each tranche is certified by an independent monitoring surveyor before it is released.
The case is submitted with site details, planning status, build cost schedule, GDV evidence, developer track record, and proposed exit strategy. Indicative terms are usually available within 48–72 hours.
The lender instructs an independent valuation and technical appraisal to assess current value, completed GDV, build cost schedule, and overall project risk. The borrower typically pays these costs.
A monitoring surveyor is appointed by the lender and paid by the borrower. They inspect works and certify each drawdown stage throughout the build. No drawdown is released without their sign-off.
Legal due diligence is completed, the lender’s charge is registered, and the initial advance is released — typically covering the land cost or first construction stage.
Further tranches are released as certified work is completed and verified by the monitoring surveyor. The drawdown schedule is agreed at outset and aligned to the build programme.
The loan is repaid through sale of completed units, refinance onto an investment mortgage, or development exit finance where additional sales time is needed.
What development finance covers
Development finance is used where construction, conversion, or material structural work is involved. The table below sets out the most common scheme types and their typical exit routes.
| Scheme type | Description | Typical exit |
|---|---|---|
| Ground-up residential | New build from foundations — single unit to larger multi-unit schemes. | Sale or refinance onto investment mortgage. |
| Ground-up mixed-use | Combined residential and commercial schemes. | Sale or long-term investment refinance. |
| Heavy refurbishment | Structural works, change of use, or substantial conversion where standard bridging is insufficient. | Sale or refinance onto BTL or commercial mortgage. |
| Commercial to residential | Permitted development (Class MA) or full planning conversion. | Sale or BTL refinance. |
| HMO conversion | Conversion to licensed HMO accommodation — including Article 4 areas. | HMO BTL refinance. |
| Part-built schemes | Rescue funding to complete stalled or distressed schemes — requires careful appraisal of costs to complete vs GDV. | Completion, then sale or refinance. |
Typical lending parameters
The parameters below reflect the range available across EAS Finance’s lender panel as at April 2026. A brief conversation will establish what is achievable for a specific scheme.
What development finance actually costs
The total cost of a development finance facility extends beyond the headline interest rate. The table below covers the principal cost components a borrower should model at appraisal stage.
| Cost component | Typical range | Notes |
|---|---|---|
| Interest rate | 0.75% – 1.2% per month | Dependent on scheme, leverage, developer experience, and lender. Charged on drawn funds only. |
| Arrangement fee | 1% – 2% | Charged by the lender on completion. Can sometimes be retained from the facility. |
| Monitoring surveyor | Variable by scheme | Paid by the borrower. Usually a fixed fee agreed at outset, with per-visit inspection costs. |
| Valuation fee | Variable by scheme size | Independent RICS valuation required. Costs rise with scheme complexity and GDV. |
| Legal fees | Variable | Borrower normally pays both their own and the lender’s legal fees. Budget for both. |
| Broker fee | Agreed in writing before work begins | EAS Finance confirms all fees transparently before any work commences. |
Interest is charged on drawn funds, not the full facility from day one. Modelling drawn-down interest progressively — aligned to the build programme — is more accurate than applying the headline rate to the total facility for the full term.
What development lenders assess
Development lenders assess seven distinct elements in every application. Weakness in any one of them can lead to reduced leverage, higher pricing, or a declined application — regardless of the strength of the others.
Lenders want evidence of comparable schemes completed on time and on budget. First-time developers are not automatically excluded, but face lower leverage limits and stricter requirements on contractor quality and professional support.
Full planning consent significantly improves lender appetite and LTV. Outline consent, reserved matters, and pre-application positions are lendable but at reduced leverage. Planning conditions that restrict commencement or drawdown must be resolved before the facility can be drawn.
The most common weakness in development applications. Lenders require independent market evidence — comparable sales data from a qualified valuer — not the developer’s own estimate. Unsupported GDV will lead to a reduced facility or decline.
A detailed, itemised cost schedule supported by a contractor’s fixed-price or schedule-of-rates contract is the standard. The contractor’s track record matters independently — lenders assess the contractor as a distinct risk factor, not simply a subcomponent of the scheme.
Sale or refinance must be evidenced, not assumed. For a sale exit, comparable evidence of achievable prices is required. For a refinance exit, confirmation of likely lender appetite — ideally a mortgage in principle — is expected. See our exit strategy guide for detail.
Lenders expect the developer to have meaningful equity at risk. The required contribution varies by lender and scheme, but a developer contributing 15–20% of total project cost is the typical starting point. Additional security — cross-charges, personal guarantees — may be required for higher leverage or weaker track records.
Clean title, no restrictive covenants, and no access or ransom strip issues are the baseline. Complex title — shared freehold, flying freehold, disputed boundaries — is not automatically a barrier, but requires early legal resolution. Lenders will not proceed on a site with unresolved title issues.
A credible build programme with a realistic timeline — accounting for weather, contractor availability, and statutory processes — is expected. Lenders test the programme against the loan term and want to see a contingency that covers realistic overrun scenarios, not just best-case sequencing.
The most common weakness is unsupported GDV paired with an optimistic build programme. A lender needs market evidence and conservative timelines — not aspirational numbers. We assess both before approaching any lender.
Exit strategies for development finance
The exit strategy is assessed as rigorously as the build programme itself. A credible, evidenced exit is a condition of approval — not an afterthought. The three primary exits for development finance are set out below.
The most common exit. Completed units are sold and proceeds repay the facility. Requires comparable evidence supporting the assumed sale prices. Lenders will apply a conservative buffer — typically 10–15% — to stated GDV when stress-testing this exit.
Exit strategy guideThe completed property is retained and refinanced onto a buy-to-let, HMO, or commercial mortgage. Requires rental income projections and a confirmed mortgage in principle from a named lender before the development loan is drawn.
Buy-to-let financeWhere the scheme is complete but units are still selling, a development exit bridge repays the senior development loan and holds the position while sales complete at the right price. Avoids a distressed sale under time pressure from a maturing facility.
Development exit explainedFor a comprehensive breakdown of all available exit routes, evidence requirements, and lender expectations, see our bridging loan exit strategy guide. The principles apply equally to development finance exits.
Risks and failure points
Development finance carries specific risks that are often underestimated at the appraisal stage. The six most common failure points are set out below, rated by frequency and severity of impact.
Completed values fall below appraisal assumptions — either because the market moves or because GDV was overstated at the outset. This is the most common cause of development finance distress.
Construction costs exceed the budget, exhausting the contingency and requiring additional equity. Labour and materials cost inflation has made this more common since 2022.
The main contractor fails, abandons the site, or enters insolvency mid-build. Replacing a contractor mid-scheme is expensive, slow, and frequently triggers cost overrun.
The build takes longer than the loan term allows, requiring an extension — which incurs additional interest and fees — or a refinance into a bridging facility to complete.
Units take longer to sell than modelled, extending the interest-bearing period and potentially triggering the need for development exit finance.
Pre-commencement planning conditions — ecology surveys, drainage approval, materials approval — delay the start of works and consequently the drawdown schedule.
Development finance vs bridging finance
The two products are frequently confused. The distinction is material — applying for bridging when development finance is required, or vice versa, will result in a declined application or an incorrectly structured facility.
| Factor | Development finance | Bridging finance |
|---|---|---|
| Primary use | Construction, conversion, heavy refurbishment where structural works are involved. | Acquisition, light refurbishment, chain breaks, auction purchases. See bridging finance. |
| Assessment basis | GDV and overall project viability — including developer, contractor, and build programme. | Current property value and the credibility of the exit strategy. |
| Drawdown | Staged tranches aligned to build programme, certified by monitoring surveyor. | Usually one main advance at completion, occasionally with a retained or rolled interest structure. |
| Monitoring | Independent monitoring surveyor required for all but the smallest schemes. | Not typically required — lender relies on valuation and legal charge. |
| Typical term | 6–24 months. | 1–18 months. |
| Rates | 0.75%–1.2% per month — reflects construction risk. | 0.55%–1.5% per month — reflects asset and exit risk. |
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