Development Finance in the UK Has Shifted - Here is What That Means for Your Next Project
Development finance is more available than the headlines suggest — but also less forgiving than it was. Lenders have tightened criteria, the cost of funds has risen, and the margin for error on a stacked-debt deal has narrowed considerably. If you are planning a scheme today, understanding how the landscape has moved is the difference between a deal that works and one that quietly bleeds you dry.
Has development finance actually become harder to get?
Yes and no. Development finance is still widely available from a broad panel of specialist lenders, challenger banks and private funds. What has changed is the cost, the criteria and — critically — the margin for error. Lenders who were stretching to 90% of costs five years ago are now drawing those lines more conservatively, and rolled-up interest on a 12-18 month scheme adds up faster when base rates are higher.
The headline story is not that capital has disappeared. It is that the economics of development have shifted, and a deal that pencilled comfortably in 2019 might only marginally work today. Rising build costs, slower sales markets in some regions, and the higher cost of debt have compressed margins — and compressed margins punish debt stacking harder than anything else.
The developers moving forward confidently right now share one characteristic: they understand where debt ends and where their own equity or cash must begin.
What does stacking debt mean — and why is it riskier now?
Stacking debt means layering multiple funding lines against the same development — typically a senior development loan topped up with mezzanine finance, a JV equity partner, or both. Each layer has its own cost, its own security position, and its own exit requirement. In a healthy margin environment, stacking can be a sensible capital efficiency tool. In a tight-margin environment, it becomes a structural vulnerability.
Here is why: each debt layer has a cost. Senior development finance carries arrangement fees, rolled-up interest, and an exit fee. Mezzanine finance, sitting behind the senior lender in security terms, charges significantly more — often several hundred basis points above the senior rate. Stack both and you may find that by the time you pay both facilities down at completion, the profit you modelled has been partially or entirely consumed.
The real danger is not the debt in isolation — it is the assumption baked into the appraisal. Many stacked-debt structures only work if sales complete on time, at full projected value, with no cost overruns. One of those three things going wrong on a thin margin is manageable. Two going wrong simultaneously is a crisis.
Senior Development Loan
Lowest cost - First charge security
Mezzanine Finance
Higher cost - Second charge security
JV Equity or Your Cash
Profit-share or no interest cost - Last in, last out
How do lenders assess development finance applications now?
Development lenders assess applications across four pillars: the borrower, the site, the scheme, and the exit. All four have tightened. Experience matters more than it did; GDV evidence is scrutinised more closely; build cost credibility is challenged by monitoring surveyors; and exit strategy must be demonstrable, not assumed.
The Borrower
Experience matters more than it did. First-time developers face a narrower lender panel and may need a professional project manager to satisfy underwriters. Serial developers with proven track records access better pricing and higher gearing.
The Site
Lenders want clean title, confirmed planning permission — ideally detailed rather than outline — and realistic comparable evidence for the GDV. Sites with contamination or unresolved planning conditions are harder to fund at the outset.
The Scheme
Build cost evidence is scrutinised closely. Lenders appoint a monitoring surveyor who validates your QS schedule before first drawdown. Any gap between your cost plan and the surveyor's view will affect the loan amount offered.
The Exit
This is where lenders have tightened most noticeably. A credible exit — sales or refinance — must be demonstrable, not assumed. Lenders want comparable sales evidence, agent letters where possible, and realistic timelines.
Why is equity or cash your most powerful tool in a tight-margin deal?
In a compressed margin environment, equity and cash perform a function no debt structuring can replicate: they reduce total debt service cost, which directly protects the profit. The question has shifted from how much can I borrow to how much should I borrow — and that is a more valuable question to answer carefully.
Consider two identical schemes — same GDV, same build cost. Developer A brings 30% equity and draws a straightforward senior development loan. Developer B brings 10% equity, draws a senior loan, and tops up with mezzanine finance to cover the gap. Developer B's total interest and fee cost is materially higher — often enough to swing a borderline deal into loss.
This does not mean development finance is not worth using. It means the most useful thing a broker can do on a tight-margin deal is stress-test the appraisal before submission — running the numbers with realistic contingency, modelling the effect of a cost overrun or sales delay, and identifying the point at which a stacked-debt structure breaks.
What LTV and LTFC can I realistically expect?
Development finance is typically quoted on two metrics: LTV expressed against GDV and LTC expressed as a percentage of total costs. A lender might offer up to 65% of GDV as the maximum loan, with total facility up to 85-90% of total costs. The actual offer depends on your experience, the scheme, the location and the lender's current appetite.
On a tight-margin scheme, the GDV cap tends to bite first. If your margin is thin — say 15-18% of GDV — a 65% GDV cap on the senior loan leaves a meaningful gap between the loan and total costs. That gap either comes from your own equity, or from a mezzanine facility layered on top. The cost of that mezzanine layer is exactly what you need to model carefully.
For development finance structuring across your specific scheme type, the JW Capital commercial finance team can run an initial assessment quickly.
How does JW Capital's approach differ?
The high street does not really do development finance. The product belongs to specialist lenders. The difference between brokers is not which lenders exist — it is who they talk to, how they present deals, and how they model the numbers.
Speed
A clean, well-packaged application can reach formal offer in two to three weeks. Poorly packaged applications to the same lender take months. The packaging matters as much as the lender relationship.
Flexibility
We work with lenders who accommodate land without planning, PD schemes, mixed-use conversions and smaller schemes that fall below institutional minimum ticket sizes.
Structuring
The most useful thing we do on a tight-margin deal is stress-test the appraisal before submission. Most borrowers find that conversation more valuable than simply being told which lender to use.
What are the common deal blockers right now?
Insufficient equity contribution
Lenders want skin in the game. Light equity means a smaller loan, a requirement for expensive mezzanine, or a decline. There is no substitute.
Unresolved planning conditions
A loan conditional on planning discharge is possible but uncommon. Most lenders want pre-commencement conditions cleared before first drawdown.
Weak GDV evidence
If comparables do not support your projected sales values, the valuer reduces the GDV, which reduces the loan. Build your GDV case carefully and conservatively.
Thin or absent contingency
Lenders expect 10-15% of build costs as contingency in the appraisal. If yours does not have it, the monitoring surveyor will flag it and the loan will be adjusted.
No credible exit
An assumed exit that does not stack up at current market conditions will kill a term sheet. Work out your exit before you apply, not after.
Regional development finance
Development finance is available UK-wide, but local market expertise changes outcomes. JW Capital is active across:
Frequently asked questions
Common questions from developers, answered directly.
Development finance is a short-term loan used to fund the construction or conversion of a property. The lender releases funds in staged drawdowns as work progresses, verified by a monitoring surveyor. Interest is usually rolled up into the loan and repaid at the end of the term, typically from sales proceeds or a refinance onto a longer-term mortgage.
Most development lenders expect borrowers to contribute at least 10-30% of total project costs, depending on experience and scheme complexity. First-time developers typically need to contribute more. The higher your equity contribution, the simpler the funding structure and the lower the overall debt cost on the scheme.
Mezzanine finance is a secondary loan that sits behind a senior development loan in security priority. It bridges the gap between the senior loan and total project costs. Because the mezzanine lender takes more risk, the interest rate is significantly higher — making it important to model the full cost before committing to this layer.
Rolled-up interest means interest is not paid monthly during the loan term. Instead, it accrues and is added to the outstanding loan balance, then repaid in full when the loan exits — typically from sales proceeds or refinance. This preserves cash flow during the build phase but increases the total amount owed at exit.
GDV stands for Gross Development Value — the projected total value of a scheme once complete and sold or refinanced. Lenders use GDV to set the maximum loan size. If your GDV evidence is weak, the loan offer will be lower, which can affect the viability of the whole scheme.
An exit strategy is the plan for repaying the development loan at the end of the term — usually through sales of completed units or a refinance onto a term mortgage. Lenders scrutinise this because the loan is short-term and relies on the exit completing on time. A weak or assumed exit is one of the most common reasons development finance applications fail.
Yes, but the lender panel is narrower and criteria are tighter. First-time developers typically need a stronger equity position, an experienced professional team, and a well-evidenced scheme. Working with a specialist broker significantly improves access and terms.
A well-packaged application to a specialist development lender can move from heads of terms to formal offer in two to four weeks. Poorly packaged applications take significantly longer. Instructing a specialist broker to package the deal correctly upfront is the single biggest factor in reducing approval timescales.
If you have a contingency built into your appraisal — typically 10-15% of build costs — modest overruns can be absorbed. If costs exceed the total facility, you will need to introduce additional equity or negotiate with your lender. Honest, conservative cost planning from day one is the most effective protection against overrun risk.
Lenders are active across the UK, but appetite varies by location. High-demand urban markets generally attract more lender interest and better terms. Regional and rural markets — including Cornwall and the South West and Bath and Somerset — are well-served, but local comparable evidence and broker expertise matter.
Ready to discuss your development?
Tell us about your scheme. We will stress-test the appraisal, identify the right funding structure, and give you a straight answer on what is achievable.