What Is Development Finance?
Development finance (also called property development loans or construction finance) is staged funding for ground-up builds, conversions and major structural projects in the UK. Unlike a standard mortgage or bridging loan, funds are not released in one lump sum; they are drawn in tranches as construction reaches verified milestones.
The key distinction from bridging finance: development finance is assessed on what a project will be worth when complete (the GDV), not just on the current value of the land or site. This allows developers to access significantly higher loan amounts relative to purchase price, provided the completed development value supports it.
Development finance is unregulated commercial lending. It applies to residential developments (houses, flats, HMO conversions), commercial projects (offices, retail, industrial) and mixed-use schemes.
Key Metrics: GDV, LTGDV, LTC and Profit on GDV
GDV (Gross Development Value) (the total estimated market value of the completed development). If you're building 10 flats worth £200,000 each, your GDV is £2,000,000. The lender's RICS surveyor will assess this independently. GDV must be supported by genuine comparable sales in the local market.
LTGDV (Loan-to-GDV) (the loan expressed as a percentage of GDV). The PRIMARY risk metric. Most lenders cap at 65–70% LTGDV. First-time developers: 55–60%. Example: £2m GDV → max loan £1.3m–£1.4m.
LTC (Loan-to-Cost) (the loan as a percentage of total project costs, land + build). Max typically 70–85% LTC. Both LTGDV and LTC are applied simultaneously; the lower constraint governs.
GDC (Gross Development Cost) (land + build cost + professional fees + finance costs + sales costs + contingency). The complete measure of project outlay.
Profit on GDV (GDV minus GDC) ÷ GDV. Lenders require minimum 20–25%. If your scheme shows only 15% profit, most lenders will decline. This protects against cost overruns and GDV softening.
| Metric | Definition | Lender Threshold | Example (10 x £200k flats) |
|---|---|---|---|
| GDV | Total completed value | Surveyor-verified | £2,000,000 |
| LTGDV | Loan ÷ GDV | Max 65–70% | £1,300,000–£1,400,000 |
| LTC | Loan ÷ Total Costs | Max 70–85% | Depends on costs |
| Profit on GDV | (GDV − Costs) ÷ GDV | Min 20–25% | £400,000–£500,000 |
How Lenders Assess Development Finance Applications
Credit officers and underwriting committees assess development applications in a prioritised order. Here is what they examine and why it matters:
- Scheme viability: Is GDV realistic? Is profit on GDV 20%+? Has a real QS/architect reviewed the build costs? Lenders stress-test: what happens if GDV falls 10–15%?
- Planning status: Full planning permission is the gold standard. Conditional PP: acceptable but conditions add risk. Pre-planning: some specialist lenders advance, but lower LTV and higher rate. No PP: very limited lenders; almost always requires exceptional location and planning history.
- Professional team: Architect (RIBA), structural engineer, project manager/principal contractor all with COMPARABLE completed schemes. First-time teams are the single biggest barrier. The monitoring surveyor will also scrutinise the team.
- Exit strategy: Unit sales programme (who will market? what sales rate?) or refinance to BTL/commercial mortgage. Pre-sales (exchanged contracts on units before drawdown) strengthen applications significantly.
- Developer experience: CV of completed comparable projects. Schedule: scheme name, location, units, GDV, completion date. No track record = higher rate, lower LTV, strong team essential.
- Build cost credibility: Itemised schedule of works. Reviewed by monitoring surveyor. Lenders have seen many schedules; understated costs are identified. Contingency of 10% minimum expected.
- Location and market depth: Will units sell at assumed GDV? Lender's RICS surveyor assesses local comparables. Oversupply in local market is a red flag.
- LTC and LTGDV: Both must pass simultaneously.
- Adverse credit Same sensitivity approach as bridging; historic satisfied marks accepted by most specialist development lenders.
- Personal guarantee Required from all principals. Often structured via an SPV with personal guarantees from directors.
Important
Development Finance Application: Step-by-Step
- 01
Initial Enquiry
Submit a development appraisal (Excel model), planning status overview, site location, proposed scheme description, developer CV and indicative loan requirement. We provide indicative terms within 48–72 hours.
- 02
Indicative Terms / AIP
Lender issues indicative terms. These are not binding; they establish headline rate, LTGDV, LTC, arrangement fee and conditions. Allows developer to confirm the scheme is viable on these terms before incurring costs.
- 03
Full Application
Formal application submitted with full documentation pack (see checklist below). Valuation and monitoring surveyor instructed simultaneously.
- 04
RICS Development Appraisal Valuation
Independent RICS surveyor values the site "as is" and provides a GDV assessment. Reviews build costs for reasonableness. Takes 2–4 weeks for residential schemes.
- 05
Monitoring Surveyor Initial Report
The lender's monitoring surveyor visits the site, reviews the schedule of works and build cost schedule, and provides an initial cost review report. Any queries raised must be resolved.
- 06
Credit Committee
Lender's underwriting team reviews the full pack: RICS report, monitoring surveyor's report, planning documents, developer CV, legal title, personal guarantee, financial position. May raise further queries (conditions precedent).
- 07
Formal Facility Letter
Issued once credit approved. Contains full terms, all conditions precedent to drawdown, repayment schedule and monitoring requirements. Both parties' solicitors review.
- 08
Legal Process
Title searches, facility agreement, legal charge over the site, personal guarantee documentation. Both parties instruct solicitors. Typically 3–6 weeks.
- 09
Day 1 Drawdown (Land/Acquisition Advance)
Funds for land/site purchase released. Typically 50–65% of current site value.
- 10
Build Tranches
Each tranche drawdown requires: borrower's formal drawdown request, monitoring surveyor site inspection and sign-off, updated cost-to-complete schedule. 5–8 tranches for a typical residential scheme.
- 11
Practical Completion
Final tranche released on PC certificate. Small retention (typically 3–5% of build cost) held until snagging complete.
- 12
Exit
Units sold (sales agent releases funds to pay down loan) or refinance to long-term investment mortgage. Loan redeemed.
Development Finance Documentation Checklist
Project & Planning Documents
- ✓Development appraisal / financial model (Excel) showing GDV, build costs, professional fees, finance costs, contingency, profit on GDV
- ✓Planning permission decision notice + approved drawings + planning conditions schedule
- ✓Pre-commencement conditions (list and status of discharge)
- ✓Schedule of works / specification prepared by architect or QS: itemised by trade
- ✓Architect's drawings (existing and proposed)
- ✓Structural engineer's report (if any structural changes)
- ✓Ground investigation / contamination report (for brownfield or any contamination risk)
- ✓Pre-application advice response from planning authority (if obtained)
- ✓Section 106 agreement and Community Infrastructure Levy calculation
- ✓Site ownership: title register + title plan; or purchase contract if not yet acquired
Team, Financial & Company Documents
- ✓Developer CV: full schedule of all previously completed projects with scheme name, location, unit count, GDV, completion date
- ✓Architect's credentials (RIBA membership) and portfolio of comparable completed projects
- ✓Structural engineer's credentials and PI insurance certificate
- ✓Principal contractor CV and examples of comparable completed builds
- ✓Company documents (if SPV): Certificate of Incorporation, Articles of Association, shareholder register
- ✓Director(s) photo ID and proof of address (all directors with 10%+ stake)
- ✓Personal net worth statements for all guarantors
- ✓3–6 months personal bank statements for all guarantors
- ✓Details of all existing secured and unsecured credit facilities
- ✓Professional indemnity insurance details for all consultants
Development Finance Self-Assessment
Before You Apply: Critical Self-Assessment
- ✓Is my GDV backed by 3+ recent comparable sold prices? (not agent estimates: actual sold comparables in the same area)
- ✓Is my profit on GDV at least 20–25%? If below 20%, the scheme is likely underfundable at current LTVs
- ✓Do I have full planning permission? (conditional PP or pre-planning significantly restricts options)
- ✓Does my professional team have directly comparable completed projects? (a team that built one house cannot support a 20-flat development application)
- ✓Is my build cost schedule realistic and reviewed by an independent QS?
- ✓Have I included ALL costs: SDLT, legal fees, monitoring surveyor, finance costs (arrangement fee + rolled interest), agent sales fees, CIL/S106 obligations?
- ✓Have I stress-tested the scheme at 10% lower GDV? Does it still show profit?
- ✓Do I have enough equity for the required day 1 contribution? (lenders advance 50–65% of land value; you need the rest)
- ✓Is my exit evidenced? If selling: have you spoken to local sales agents about realistic timeframes? If refinancing: do you have indicative BTL terms?
- ✓Am I clear on the monitoring surveyor requirement and its cost?
How Development Finance Tranches Work
Development loans are not released in one lump sum. They are drawn down in tranches as construction progresses, verified by the lender's monitoring surveyor. This is a fundamental feature that distinguishes development finance from bridging.
- Day 1 advance: acquisition of land/site, typically 50–65% of site value
- Build tranches: each one tied to a construction milestone (foundations, first floor plate, roof-on, first fix, second fix, practical completion)
- Trigger for each tranche: borrower's formal drawdown request + monitoring surveyor inspection + surveyor's sign-off certificate
- The monitoring surveyor is independent, appointed by the lender at the borrower's cost (£1,000–£3,000 per residential unit)
- Tranche amounts: specified in the facility letter; negotiated based on the build programme
- Interest: accrues on drawn funds only, not the full facility. This means a developer paying rolled-up interest on £500k (early build) pays less than on £1.5m (near completion)
Tip
Mezzanine Finance in Development
Mezzanine finance sits between the senior development loan and the developer's equity, filling the gap when the senior loan doesn't cover all project costs and the developer lacks full equity.
Example: A scheme requires £1.5m total funding. Senior lender advances £1.2m (80% LTC). Developer has £150k equity. The remaining £150k gap is filled by a mezzanine lender at a higher rate.
- Mezzanine lender sits behind the senior lender in security priority
- Rate: typically 1–2%/month above senior rate
- Some senior lenders do not permit mezzanine; check facility agreement before proceeding
- Can enable developers with limited equity to proceed with projects they could not otherwise fund
- Increases total project cost significantly; must be modelled into the development appraisal
First-Time Developers: What You Need to Know
First-time property developers face higher scrutiny from development lenders than experienced developers. This is entirely expected; lenders are protecting against project management risk.
What first-time developers can do to strengthen applications:
- Appoint an experienced project manager with directly comparable completed schemes: this is the single most effective step
- Start smaller: 1–4 units is the standard entry point for first-time developers; 20+ units is extremely difficult without a track record
- Use a reputable main contractor (JCT contract, relevant experience, references from completed similar projects)
- Consider joint venture with an experienced developer: co-borrower structure
- Seek lenders who explicitly market first-time developer products (e.g. some challenger banks)
- Have a robust contingency (15% rather than 10%) to demonstrate caution
- Pre-application discussions with planning authority before buying land
- Build a strong professional team: reputable architect + SE + QS all with comparable experience
Expect: 55–60% LTGDV (vs 70% for experienced), higher rate (+0.15–0.25%/month), more conditions precedent, potentially a project monitoring service requirement (Gleeds, RLB).
Costs & Worked Example
| Scenario | Monthly Rate | LTGDV | Notes |
|---|---|---|---|
| Experienced developer, clean credit | 0.33–0.55% | Up to 70% | Best-in-market |
| Experienced developer, adverse credit | 0.55–0.75% | 60–65% | Minor rate uplift |
| First-time developer, clean credit | 0.55–0.75% | Up to 65% | Strong team essential |
| First-time developer, adverse credit | 0.75–1.0% | 55–60% | Specialist lenders only |
Worked Example: 10 x 2-bed flats, London commuter belt
| Item | Amount |
|---|---|
| Land | £400,000 |
| Build cost | £900,000 |
| Professional fees | £80,000 |
| Finance costs | £95,000 |
| Contingency (10%) | £90,000 |
| Sales costs | £40,000 |
| GDC Total | £1,605,000 |
| GDV (10 x £220,000) | £2,200,000 |
| Profit on GDV | (£2,200,000 − £1,605,000) ÷ £2,200,000 = 27% ✓ |
| Senior loan (68% LTGDV) | £1,496,000 |
| Arrangement fee (1.5%) | £22,440 |
| Rate 0.50%/month × 18 months on drawn balance | ~£90,000 (estimate, rolling) |
| Monitoring surveyor (£2,500 × 10 visits) | £25,000 |
| RICS valuation | £3,500 |
| Legal (both sides) | £20,000 estimate |
FAQs
Can I get development finance without planning permission?
A small number of specialist lenders will advance against land without planning, but at lower LTVs (50–55%) and higher rates. The exit strategy must be credible, typically sale of the land. Most development lenders require at minimum outline or conditional planning permission.
How long does development finance take to arrange?
Typically 4–8 weeks from formal application to first drawdown for a straightforward residential scheme. Complex structures, first-time developers or sites with issues may take 10–16 weeks. The RICS valuation and monitoring surveyor's initial report are usually the critical path items.
Do I need to use the lender's monitoring surveyor?
Yes. The lender appoints their own independent monitoring surveyor; you cannot use your own QS or project manager for this purpose. The monitoring surveyor's cost is borne by the borrower. They act as the lender's eyes on site; their sign-off triggers each tranche release.
Can I use development finance for a single house?
Yes, development finance works for single self-builds and small extensions as well as larger schemes. For a single new-build house, some lenders offer a simplified product. Minimum loan amounts are typically £100,000–£150,000 for specialist lenders.
What is "interest on drawn funds only"?
Development finance interest accrues only on the amount you have actually drawn down, not the full facility. If your facility is £1.5m but you've only drawn £600,000 to date, interest rolls up on £600,000. This means costs are lower in the early stages of the build and ramp up as more is drawn.
What happens if I run out of money mid-build?
This is the nightmare scenario. If build costs exceed budget and the facility is exhausted, the project can stall. This is why lenders require a realistic contingency, and why developers should never draw a facility to its maximum. If genuine cost overruns arise, most lenders will consider an increase, but this requires a new valuation and costs additional fees. Having a strong contingency and monitoring your cost-to-complete weekly is essential.