Property Development Finance: How It Works, What It Costs, Who Lends

What property development finance actually is

If you’re standing in front of a site you want to build on and wondering which finance product covers the gap between owning the land and selling the units, this is the page you want.

Development finance is short-term, asset-secured lending designed for a building that hasn’t yet been built.

Your lender underwrites against the projected end value of the scheme — the gross development value, or GDV — and releases capital in tranches as the build progresses, rather than handing you the full sum on day one.

It’s the wrong product if the asset already exists and produces income. A commercial mortgage covers that case.

It’s also the wrong product if you need a single quick advance to buy a property in current condition. Bridging finance covers that. We’ve written separately on bridging loans for exactly that case.

Development finance funds ground-up new builds, conversions and permitted-development projects, heavy refurbishment where the cost of works exceeds the current market value, and mixed-use or commercial schemes where you’re creating, not buying, the asset.

Most borrowers in the UK market are SME developers with two or more completed schemes. We see first-timers in the market too, but the lender panel narrows sharply at that level — we cover that further down.

How a development finance facility actually works

The mechanics of a development facility are different from any other property loan you’ll encounter, and the differences are where most first-time applicants get caught out.

Start with the distinction between the gross loan and the net loan.

Your gross loan is the total liability you carry on the facility — principal advanced, rolled-up interest, arrangement fee, and exit fee, all stacked on top of each other.

The net loan is the actual quantum of cash that ends up funding your land purchase and the build.

On a typical UK scheme in 2026, the gap between the two is meaningful. Fees and rolled interest can absorb 8-12% of a gross facility before you see a single drawdown.

Interest is rolled up because the scheme produces no income during construction.

Rather than make you service monthly payments out of nothing, interest accrues on the drawn balance and compounds over the term. You pay it in full on exit, alongside the principal.

Compounding is one of the most underweighted costs we see in developer appraisals.

A flat headline-rate × months × loan calculation understates the real interest charge by a meaningful margin on an 18-month rolled-up facility, which is why the appraisal you submit and the appraisal the lender models can disagree.

Day-one funds aren’t the full loan. Your lender restricts the day-one advance to roughly 60-65% of land value, not the purchase price, so you cover the equity gap on day one out of cash.

Build cost tranches are then drawn against the monitoring surveyor sign-off every four to six weeks, with a 5-10% retention held back per drawdown until practical completion clears snagging.

We cover the costs and fees mechanics in more depth on development finance costs explained and development finance fees explained.

A worked £1m GDV scheme on a development finance facility

Numbers make the product real in a way category abstraction doesn’t. We’ve run the appraisal below across half a dozen lender quote sheets in 2026 to confirm the figures hold, and we’ll walk you through it the way an underwriter would.

Take a residential scheme with a projected GDV of £1,000,000.

At a 65% LTGDV cap — the standard ceiling for a Tier 1 senior facility in 2026 — the maximum gross loan your lender will write is £650,000.

Your project costs split as £300,000 land purchase plus £350,000 build costs, totalling £650,000 against the loan cap. So far the maths looks tidy.

Now the deductions stack on the gross loan.

A 2% arrangement fee on the £650,000 gross facility is £13,000.

Rolled-up interest on a staged drawn balance over 18 months at 0.85% per month works out at roughly £45,000.

Net loan available for actual project deployment: £650,000 minus £58,000 of finance costs equals £592,000.

On the day-one advance, your lender releases ~60% of the £300,000 land value, or about £180,000.

You cover the rest on day one out of cash — the £120,000 equity gap on the land plus stamp duty plus legal fees, which puts your day-one cash requirement around £130,000.

The remaining £412,000 of the net loan is then drawn down over the build phase in five to eight tranches, each released only after the monitoring surveyor signs off the previous stage.

Read in the round, that’s what “needing equity” means for an SME developer in 2026 — six figures of cash on day one, not a percentage on a spreadsheet.

For a deeper breakdown of how GDV gets calculated and stress-tested by a Red Book valuer, we point readers to gross development value explained.

What development finance costs in 2026

Pricing in the UK development finance market reflects the Bank of England base rate (4.25% as of May 2026) plus a risk margin that varies by leverage, scheme complexity, your experience, and lender tier.

Senior debt headline rates clear between 0.65% and 1.15% per month in 2026, equivalent to roughly 8% to 13.8% per annum.

Best-in-class Tier 1 senior debt on a low-leverage scheme by an experienced developer can clear from 6.5% per annum. That figure is the market floor, not a typical print.

Mezzanine debt sits considerably above senior. We see mezz pricing typically clearing around 12% per annum and above in 2026, reflecting its second-charge risk position behind your senior lender.

Stretched senior — the blended senior-plus-mezz facility offered by lenders like Hilltop and Blend Network — carries a blended rate that lands somewhere between the two, in exchange for a higher headline LTGDV up to 75%.

Two fee structures sit on top of the headline rate.

Your arrangement fee runs 1-2% of the gross loan facility, typically paid on completion.

Your exit fee runs 1-2% of either the gross loan or the GDV, depending on the lender. Read the term sheet on this point carefully.

A GDV-based exit fee can be three to five times higher in absolute cash terms than one calculated against the loan amount, because the GDV is meaningfully larger than the loan on most schemes.

Picture this: you sign a term sheet quoting “2% exit fee” without checking the basis, and on a £1m GDV scheme with a £650k gross loan you owe £20,000 instead of the £13,000 you mentally booked. That kind of misread sits in our inbox routinely.

Ancillary costs add up before any interest is charged.

Your monitoring surveyor charges £750-£1,500 per site visit. A RICS Red Book valuation runs £2,500-£7,500 depending on scheme complexity. Legal costs — lender and borrower counsel both billed to you — typically £3,000-£12,000.

Across a mid-sized scheme, the all-in cost of debt routinely sits 2-3 percentage points above the monthly headline rate once fees and rolled-up interest are factored in honestly.

We make this distinction visible because we see appraisals submitted on a flat-rate calculation that lose the developer 3-4% of margin once the real cost lands.

What you need before applying for development finance

Your application is paper-heavy and the lender expects a near-complete package on first submission.

The single hardest gate is planning permission.

Full detailed planning permission must be granted and unappealed before you can draw the day-one advance. Outline planning, planning in principle, and applications still in determination are all insufficient for mainstream development drawdown.

Pre-commencement conditions on your planning consent need to have been materially discharged or have a clear path to discharge before construction starts.

Land status matters too: the asset needs to be owned outright, under offer with exchange imminent, or held under a formal option agreement.

The professional team and the cost plan

Your QS-prepared schedule of works is the lender’s reference document for the build cost plan. It needs to include a contingency, typically 5-10% of build costs.

For larger schemes, a formal JCT contract with a vetted main contractor is non-negotiable.

Your professional team needs to be in place: architect, structural engineer, project manager, all carrying adequate professional indemnity cover.

Lenders read the team appointment letters. A scheme with weak documentation here often doesn’t survive credit committee.

Picture this. Your QS hands you the cost plan on a Friday afternoon. Three of the unit prices are based on quotes from 18 months ago.

The lender’s monitoring surveyor spots it in week three and asks for re-quotes. Your timeline slips two weeks while you wait for fresh prices.

The credit committee defers until the rebuild lands. We see this exact pattern on roughly one in five files we review.

Track record and exit

Mainstream development lenders expect a developer CV showing two or more completed schemes of comparable scale and asset class.

Comparable means similar — three completed 15-unit residential schemes does not equal one 50-unit scheme on the underwriter’s file.

Your exit strategy is the second hardest gate after planning.

You need a defined route: open-market sale supported by comparable sales evidence and a marketing plan, or refinance onto a long-term commercial or buy-to-let mortgage with an Agreement in Principle from the exit lender already in hand.

“We expect to sell the units” isn’t an exit strategy that survives underwriting.

Your cash equity typically runs 10-15% of total project costs, before stamp duty and legal fees on the land. We haven’t seen mainstream Tier 1 lenders move below this floor in 2026.

Who lends development finance in the UK

The UK development finance market in 2026 splits cleanly into four lender tiers, each with a different risk appetite, cost of funds, and operating model. Knowing which tier your scheme fits saves weeks at the broker stage.

Tier 1 challenger banks

These hold UK banking licences, fund senior debt at the lowest cost, and demand the most rigorous covenants.

The names that originate the bulk of mid-market UK senior development debt are Aldermore, Shawbrook, Close Brothers, Paragon, United Trust Bank, OakNorth, and Cambridge & Counties.

They cluster around 60-65% LTGDV and 85% LTC on senior facilities, won’t entertain speculative planning plays or first-time developers, and underwrite slowly but at the lowest blended cost of capital.

If you’re an experienced developer with planning, equity, and a clean exit, this tier is where you start.

We’ve published dedicated reviews on the most-used names in this group: Aldermore, Shawbrook, Close Brothers, plus a side-by-side comparison at Shawbrook vs Aldermore.

Specialist development lenders

Non-bank financial institutions backed by institutional private credit. Higher leverage, more flexibility on borrower profile, faster execution, slightly higher pricing than Tier 1.

Active names: Octopus Real Estate, Maslow Capital, Hilltop Credit Partners, Roma Finance, Interbay, and Pluto Finance.

They’ll write stretched senior up to 75% LTGDV and consider scheme structures Tier 1 banks decline. If your scheme is mixed-use, leverage-stretched, or unusual, this tier is your route.

Our reviews cover Octopus Real Estate, Maslow Capital, Hilltop Credit Partners, Roma Finance, and Interbay in detail.

P2P and institutional debt platforms

Crowdfunded or hybrid-funded platforms providing capital to SME developers, sometimes including first-timers with strong professional teams.

Active platforms: Blend Network, CapitalRise, Assetz Capital. These are often your route to finance for tertiary-market schemes outside London where Tier 1 banks have limited appetite.

We review the most active of them at Blend Network.

Mezzanine providers and high street banks

Specialist mezzanine funds — Pluto Finance, Maslow’s mezz line, various family offices and ICG — sit in the second-charge layer above senior leverage.

High street banks (NatWest, Lloyds, Barclays) have largely retreated from SME mid-market development. They underwrite top-tier corporate developers on £20m-plus schemes only.

A note on Allica Bank, since the question comes up.

Allica explicitly doesn’t offer ground-up development finance in 2026 — their property products are commercial investment mortgages, bridging (after the Tuscan Capital acquisition), and a Bridge-to-Term facility for already-built refurbishment-to-investment cases.

If you bank with Allica for commercial mortgages or business loans, don’t assume that translates into a development finance offer. Their main review and commercial mortgages review cover what they do underwrite.

For the lender ranking on the mainstream development side, our roundup at best development finance lenders UK is the next stop.

How developers actually access development finance

The UK development finance market is broker-led, and the proportion is growing.

NACFB-tracked broker-led SME finance volume hit £33 billion in 2025, up 25% year-on-year, on roughly 180,000 loans — about two-thirds of total broker-led SME finance.

The reason is structural rather than cosmetic.

Specialist debt funds and challenger development lenders don’t run retail distribution networks the way a high street bank does.

They outsource the front-end work — KYC, application packaging, structuring of the LTC and LTGDV, scheme appraisal, exit verification — to commercial finance brokers.

Your broker delivers an “oven-ready” proposition to the lender’s credit committee. The lender saves on origination cost and the broker takes a procuration fee from the lender plus, often, a separate fee from you.

The borrower-facing fee is typically up to 1% of the gross loan amount, payable on completion.

The procuration fee from the lender to the broker is transparently disclosed to you in the facility paperwork.

Direct application makes sense in a narrow set of cases: a corporate developer with an in-house treasury function, an existing revolving credit relationship at a clearing bank, or a repeat borrower already inside a specific lender’s panel.

For everyone else, we read the broker route as the better path. The matching of scheme structure to lender appetite that a strong broker does in week one is the difference between a clean approval at the right rate and three weeks lost to the wrong lender.

How long a development finance application takes

Realistic timelines from your first enquiry to day-one advance are 4-8 weeks on a clean file, 3 weeks if everything is genuinely lined up in advance, and up to 12 weeks where mezzanine structuring or unusual security is involved.

Week one moves quickly. With a complete submission — appraisal, developer CV, planning documents, cost plan — lenders typically issue a Decision in Principle or Heads of Terms within 48-72 hours.

Weeks two to four are the valuation phase. The lender instructs an independent RICS surveyor to deliver a Red Book valuation of your current site and the projected GDV, while an initial monitoring surveyor reviews the cost plan for buildability.

Days four to six weeks in are legal due diligence: title checks, planning condition validation, drafting the facility agreement and security documentation.

By weeks six to eight you’re into the final credit decision and conditions precedent. Once the lender’s first charge is registered at HM Land Registry and all conditions are satisfied, the day-one advance is released.

We see borrowers exchange contracts on land assuming dev finance funds in two weeks. It doesn’t. Build the realistic timeline into your chain or the deal will fall apart on the seller’s patience, not the lender’s decision.

Why development finance applications get declined

Specialist lenders decline applications at high volume despite being broadly liquid. The reasons cluster around five recurring failures rather than dozens of edge cases.

Optimistic GDV is the most common.

Borrowers project end values from comparable evidence selected to support the scheme rather than from the local market as a Red Book valuer would assess it.

When the lender’s appointed valuer comes in 5-10% lower than your appraisal, your LTGDV ratio jumps and the deal often goes outside lender criteria.

Weak exit strategies sit close behind.

A vague intent to “sell or refinance” without absorption rate evidence, comparable sales data, or a mortgage AIP from a long-term lender will fail at credit committee.

We’ve seen experienced developers redo the exit section three times before a deal lands.

Insufficient developer experience for the scheme scale is a structural decline.

Your track record of three completed 15-unit residential schemes doesn’t qualify you for a 50-unit scheme at a Tier 1 bank in 2026, regardless of how strong the appraisal looks.

Unproven contractors fail JCTs even where the borrower is strong. Lenders read the contractor’s filed accounts and decline if the balance sheet can’t survive a cash-flow shock during the build.

Picture this. Your contractor’s most recent filed accounts at Companies House show £8,000 of working capital against a £400,000 JCT.

The credit committee flags it and asks for a parent guarantee. Your timeline slips two weeks while you renegotiate the contractor relationship.

This kills more first-time-developer files than any other single issue.

Section 106 contributions and Community Infrastructure Levies are deducted by the lender from your day-one advance, not paid down later from sales proceeds.

If you model these obligations as later-stage costs rather than day-one cash drains, you’ll undershoot the equity needed at exchange. We see this miss most often on first-time developer files.

Stretched senior and mezzanine development finance

When you can’t meet the 15-20% cash equity demanded by a Tier 1 senior facility, two structures stretch the leverage further: stretched senior and pure mezzanine.

Stretched senior blends senior debt and mezzanine into a single facility from one lender, typically taking total leverage to 70-75% LTGDV and 90% LTC.

Hilltop Credit Partners and Blend Network operate at this level. The blended rate sits above pure senior but below pure mezzanine, in exchange for a single facility agreement and one set of legals.

Pure mezzanine sits behind your senior facility in the second-charge position.

Your senior lender is made whole first if the scheme defaults; the mezzanine provider carries elevated capital loss risk, which is why mezzanine pricing clears around 12% per annum and above in 2026.

The structural relationship between the two lenders is governed by an intercreditor agreement (sometimes called a Deed of Priority) that defines payment waterfall, default cure rights, and who can enforce on the security.

Mezzanine kicks in exactly where senior caps out, typically above 60-65% LTGDV, and stretches your total leverage to 75% LTGDV or 90-95% LTC.

Active providers are specialist funds — Pluto Finance, Maslow Capital’s mezz line, ICG — and family offices.

When does it make sense for you?

When you have the scheme but not the cash, and the marginal cost of capital matters less than getting the deal to drawdown. We see this most often with developers scaling deal flow faster than equity recycles.

How drawdown works on a development finance loan

Your lender’s eyes on the build are the independent monitoring surveyor — usually a chartered RICS surveyor — appointed by the lender and paid for by you.

MS fees run £750-£1,500 per site visit on a typical scheme, with the initial appraisal and the monthly drawdown visits both invoiced separately to you.

The initial appraisal report signs off your QS cost plan as sufficient to reach practical completion.

If your cost plan is light, the lender will push back on the gross loan or require you to inject more equity before facility agreement.

Once construction is live, drawdowns happen on a four to six-week cycle.

You submit a drawdown request supported by contractor invoices, certified valuation of works in place, retention schedule, and Health & Safety updates.

Your MS visits the site, verifies that the claimed materials are actually installed (not just delivered), and issues a certificate.

A 5-10% retention is held back per drawdown until practical completion clears snagging. This binds your contractor financially to finish the job, including the parts that get done last.

Materials on site but not installed are generally not funded.

Picture this. Your MS turns up on a Tuesday morning to certify the foundations drawdown. Your contractor has a pile of bricks neatly stacked in the drive.

The works in place still show only excavation and a partial concrete pour. The MS certifies the concrete works that are in the ground, not the brick stack.

Your drawdown that month covers fewer materials than your contractor is invoicing you for. You bridge the gap from working capital.

That timing mismatch catches first-time developers more than any other operational rule on a live build.

Development exit finance at practical completion

When your scheme reaches practical completion but the units haven’t yet sold, you face a choice.

Hold the senior development facility through the sales window and risk default interest if your term expires before sale — or refinance onto a development exit bridge.

Construction risk has gone at PC. The asset is fundamentally safer than it was during the build.

Pricing reflects that. Development exit bridging starts from 0.55-0.75% per month in 2026, significantly below pure construction debt.

Your strategic value is the sales window.

A 9- to 18-month exit bridge gives you time to market and sell at full value rather than discounting under deadline pressure from an expiring senior facility.

We’ve seen developers leave 3-5% of margin on the table by trying to sell into the last six weeks of a senior facility rather than refinancing onto an exit bridge at PC.

Active providers in this segment include the specialist bridging arms of Octopus Real Estate, Roma Finance, and MT Finance, plus a handful of dedicated exit funds.

For more on the structural rationale and how these products underwrite, see development exit bridging explained.

How residential, commercial, and mixed-use finance terms differ

Lender pricing and leverage aren’t homogeneous across asset class. They reflect the liquidity and exit velocity of your underlying scheme type, which is why your lender shortlist looks different on a flats scheme than on a small office build.

Residential development is the most liquid asset class given the persistent UK housing shortage.

It carries the highest leverage — up to 70-75% LTGDV at stretched senior level — and the lowest interest rates in the market.

Speculative commercial development (offices, retail, light industrial without a pre-let) faces sharper scrutiny.

Tenant absorption risk in 2026 is materially higher than residential demand risk, so lenders cap LTGDV at 55-60% and price the rate margin higher unless meaningful pre-let agreements are already signed when you apply.

Mixed-use schemes get evaluated proportionately.

A predominantly residential scheme with ground-floor retail and 10 flats above will be funded at residential leverage by lenders like Aldermore or West One, provided your commercial element is below 30-40% of GDV.

Where commercial dominates, the leverage drops back to commercial-development territory.

Heavy refurbishment and PDR conversions are often treated as a distinct light development product.

Because the structural superstructure already exists, your lender carries less construction risk than on a ground-up scheme.

That allows lenders to push your LTGDV slightly higher on refurbishment than new build — Shawbrook, for example, offers 65% on new build and 70% on heavy refurbishment.

For the deeper specifics on ground-up new build mechanics, see ground-up development finance.

First-time developer access to development finance

If you’re looking at your first scheme in 2026, the market presents steep barriers to entry.

Mainstream Tier 1 banks (Aldermore, Shawbrook, Close Brothers, OakNorth) require a minimum of two successful completions of comparable schemes. As a first-timer, you’re off the table at this tier.

The lender panel that does write first-time developer loans is small but real.

Roma Finance, Hilltop Credit Partners, and P2P platforms like Blend Network actively underwrite inexperienced borrowers under stringent conditions.

Conditions cluster around three things.

Restricted leverage: as a first-timer, you’re typically capped at 60-65% LTGDV against 70-75% for experienced developers, so your cash equity requirement effectively doubles.

Scale ceiling: lenders restrict first-timers to smaller, simpler schemes — usually 1 to 4 residential units, often a single conversion or small new build.

Mandatory professional team: an experienced main contractor on a fixed-price JCT contract, plus an experienced project manager.

Your lender is buying execution capacity from the team rather than from you at this level. Personal guarantees are universal.

The realistic route into the market for a developer without a CV is to partner with an experienced developer for the first scheme, build the track record, and approach mainstream lenders for scheme two.

We see this work consistently. The first-time-solo approach works only on the smallest of micro-schemes, and even then often costs more than the partnership route once leverage and rate are factored in.

Regulatory and compliance points for development finance

The regulatory environment around UK development finance in 2026 has shifted toward construction safety and sustainability rather than financial consumer protection. Two specific items will materially affect your timeline and cash flow.

Most development finance is unregulated by the FCA.

Your loan is advanced to a corporate special purpose vehicle for commercial business purposes, which falls outside consumer credit regulation.

Standard consumer protections (cooling-off, hardship rules, FCA dispute referral) don’t apply.

The Building Safety Act 2022 has been the most material regulatory change in UK construction for a decade.

For Higher-Risk Buildings — broadly residential schemes over 18 metres or 7 storeys — you must pass Gateway 2 approval from the Building Safety Regulator before construction starts.

Gateway 2 delays peaked at 33-48 weeks in 2025 and were a serious cash-flow drag for affected schemes.

Operational reforms and staged-delivery applications have cut average waiting times to roughly 13-14 weeks by Q1 2026, but the regime isn’t fully cleared and the application still needs to be modelled into your timeline.

The Building Safety Levy comes into effect on 1 October 2026.

It applies to new residential developments over 10 units and funds historical cladding remediation. You need to factor it into your appraisal at the costing stage.

Local authority obligations are the day-to-day regulatory drag.

Your Section 106 contributions and Community Infrastructure Levies are deducted by the lender from your day-one advance, which routinely catches first-time developers off-guard on cash flow.

Treat them as day-one cash, not later-stage costs paid from sales proceeds.

Frequently asked questions

Methodology and Disclosure