Stretch Senior Development Finance: One Facility to 85% of Cost

Stretch senior development finance is a single development finance facility in which one senior lender funds a larger share of a scheme's total cost, typically 75 to 85% of cost, than a standard first-charge development loan would advance. The same product is often written as stretched senior debt, a stretch senior loan or a senior stretch loan; the terms all describe the same structure, and property developers use them interchangeably. Instead of stacking a separate mezzanine tranche on top of ordinary senior debt, the property developer borrows the whole senior layer from one lender, under one legal charge, at one blended rate.

Standard senior development finance usually caps out around 65 to 70% of total cost and 60 to 65% of gross development value. That leaves a gap the developer has to fill with equity or a second lender. Stretched senior debt pushes the first-charge advance higher, up to roughly 85% of cost and around 70% of loan to GDV, so the residual the developer must find shrinks from a third of the budget to closer to a fifth.

The appeal is structural simplicity. One senior lender means one credit process, one valuation, one facility agreement and no intercreditor agreement to negotiate between competing lenders. For an experienced developer running a tight property development programme, that simplicity has real value: a stretch senior loan can complete faster and with less legal friction than a senior plus mezzanine arrangement funding the same scheme.

The key features of a stretch senior facility. A stretch senior development loan advances up to 85% of cost and around 70% of GDV, sits behind a single first charge, rolls up interest rather than requiring monthly payments, and draws down in stages against a monitoring surveyor's certificates. Those features make stretched senior finance one of the most efficient development loans available to experienced property developers who want higher leverage from a single lender. Unlike short-term bridging loans, which fund an acquisition rather than a build, stretch senior loans are structured around the whole construction programme, from land purchase through to practical completion.

The obvious alternative to stretch senior debt is a two-lender capital stack: a first-charge senior loan to 65% of cost, plus a second-charge mezzanine tranche taking combined leverage to 85 or even 90% of cost. Both routes get a developer to broadly similar leverage. The differences are in cost, complexity and how far the money reaches.

One lender, one set of legals. With stretch senior finance there is a single facility, a single first charge and no need to align two lenders through an intercreditor agreement. A separate mezzanine layer means a second lender, second-charge security, and an intercreditor agreement that can add two to four weeks to the timetable while both legal teams agree who gets paid first.

Blended rate versus layered rate. Stretch senior debt is priced as one blended rate that sits above standard senior debt but below the cost of bolting mezzanine finance onto a senior loan. Mezzanine finance is expensive second-charge money because the mezzanine lender ranks behind the senior lender and takes more risk. When you weight the two tranches together, the all-in cost of a senior plus mezzanine stack is often higher than a comparable stretch senior facility, though not always.

How high the leverage reaches. This is where the mezzanine route can win. A senior plus mezzanine structure can reach 90% of cost, sometimes with a profit share element, where most stretch senior lenders stop nearer 85%. If the last 5% of cost is what makes your scheme work, the two-lender stack may be the only debt structure that gets you there.

Pricing on a stretch senior development loan reflects the higher leverage. Because the lender is advancing more of the cost and taking more of the risk, the rate sits above standard senior debt. In the current market a stretch senior facility is typically priced from around 8 to 12% per annum, depending on leverage, the developer's track record and the strength of the scheme, against roughly 6.5 to 8% for conservative senior debt.

On top of the interest rate, expect an arrangement fee of 1 to 2% of the facility, a valuation fee, monitoring fees for the quantity surveyor who certifies each drawdown, and legal costs for both sides. Interest is usually rolled up rather than serviced monthly, so it is charged only on funds actually drawn and added to the loan balance as the build progresses.

The headline saving over a senior plus mezzanine stack is not just the rate. It is the removal of a second lender's arrangement fee, a second set of legal costs and the intercreditor negotiation. For a mid-sized scheme those savings can run to tens of thousands of pounds, which is why experienced developers often model both structures before committing.

A note on regulation. Stretch senior development finance for a limited-company property development is a form of commercial lending and is not regulated by the Financial Conduct Authority in the way a residential mortgage is. That gives lenders and developers more freedom to structure the finance around the scheme, but it also means the protections that apply to regulated borrowing do not apply here, so the quality of advice on how you fund a project matters more, not less.

Higher leverage means tighter criteria. Stretch senior lenders are lending closer to the value of the finished scheme, so they want more comfort on everything that could erode that value. In practice, qualifying for a stretch senior loan usually means:

• A genuine development track record: most stretch senior lenders want to see completed schemes of comparable size and type, not a first project.
• Full planning permission in place, or a very clear route to it, so the lender is not carrying planning risk on top of leverage risk.
• A robust development appraisal with a healthy margin: lenders look for profit on cost of at least 15 to 20%, because the higher the leverage, the more the scheme relies on the appraisal being right.
• A credible exit, whether sales or refinance onto a term facility at practical completion, evidenced by comparable values rather than optimism.
• A strong professional team: architect, quantity surveyor, main contractor and solicitor whose experience the lender can rely on.

A first-time developer or a scheme with a thin margin will usually be pushed toward standard senior debt, with the gap made up by equity or a partner rather than by stretching the first charge.

Even at 85% of cost, a stretch senior facility does not fund everything. The residual 15 to 25% is real money the developer must commit before the senior lender releases a penny, and it has to cover more than most first-time borrowers expect. It funds the equity portion of the land purchase, the professional fees incurred before the first drawdown, the day-one costs the lender will not advance against, and a contingency the lender expects to see sitting behind the scheme.

Where that residual comes from is the question that decides whether a scheme actually happens. Developer cash is the cleanest answer, but tying up a fifth of every project's budget limits how many schemes you can run at once. That is where equity top-up partners come in: rather than raising a second-charge mezzanine loan, a developer can bring in an equity partner to fund the residual in return for a share of the profit. If you are weighing a stretch senior facility against bringing in an equity partner to cover the gap, we can model stretch senior and equity top-up structures side by side so you can see the real cost of each on your specific numbers.

The trade is straightforward: debt is cheaper but has to be repaid whatever happens, while equity costs a slice of the upside but recycles your own cash into the next scheme. On a single project with a strong margin, stretching the senior debt and funding the residual yourself often wins. Across a portfolio, using equity for the residual and keeping your cash working can matter more than the headline cost of the money.

Consider a scheme in West London with total costs of £4 million and a gross development value of £6 million, on an 18-month programme. Three ways to fund it:

Senior plus mezzanine. Senior debt at 65% of cost is £2.6 million, a mezzanine tranche adds 20%, or £800,000, and the developer funds the remaining 15%, or £600,000, in equity. Combined leverage reaches 85% of cost. The developer carries two lenders, two sets of legals and an intercreditor agreement, and pays a blended debt cost that is dragged up by the expensive mezzanine tranche.

Stretch senior. A single stretch senior facility at 85% of cost advances £3.4 million under one first charge. The developer funds the same £600,000 of residual equity. One lender, one facility, no intercreditor agreement, and a blended rate that undercuts the senior plus mezzanine route while reaching the same leverage.

Senior plus JV equity. Standard senior debt at 65% of cost is £2.6 million, and an equity partner funds the £1.4 million balance rather than the developer stretching the debt or adding mezzanine. The developer commits little or no cash but shares the profit, typically on a split that reflects who brought the land, the deal and the money. This is the route developers use when they want to run several schemes at once rather than lock their cash into one.

None of the three is universally best. Stretch senior wins on simplicity and blended cost on a single strong scheme; the mezzanine stack wins when you need to squeeze past 85%; JV equity wins when preserving your own cash to scale matters more than keeping all of the profit.

Stretch senior debt is powerful precisely because it maximises leverage, and that is also its danger. On a scheme with a thin margin, pushing the senior debt to 85% of cost removes almost all the cushion. If costs overrun, the market softens or sales are slow, a highly leveraged facility leaves very little headroom before the loan exceeds what the finished scheme is worth. In those situations, a lower loan to cost with more equity behind it, or a JV equity partner sharing the downside as well as the upside, is the safer structure even though it looks more expensive on paper.

Stretch senior is also the wrong tool when you need to go beyond what a single first-charge lender will advance, when the scheme lacks the track record or planning certainty that stretch senior lenders demand, or when you would rather keep your cash liquid to fund several projects than concentrate it in one highly geared scheme.

Ealing is a natural market for stretch senior structures. Average values of around £530 per square foot and a planning approval rate of 75% give lenders the value density and the delivery confidence that higher-leverage lending depends on. The Elizabeth Line has driven sustained demand across the borough, from Ealing Broadway and West Ealing to the large regeneration schemes at Southall, which supports the exit assumptions a stretch senior lender scrutinises before advancing to 85% of cost.

For an experienced Ealing developer with full planning and a strong appraisal, a stretch senior facility can be the most efficient way to fund a scheme with one lender and minimal equity. For a first project, a thinner margin or a scheme that needs to reach beyond 85% of cost, a standard senior loan topped up with mezzanine finance or JV equity is usually the better structure. We model both against your actual numbers, drawing on relationships with more than 100 development lenders and equity partners, so the decision rests on the economics of your scheme rather than a lender's appetite on the day.

You can compare the cost of debt and equity on your own figures with our development finance calculator, read more on how the second-charge layer works on our mezzanine finance page, or speak to our team about structuring the senior layer for your Ealing project.

Every enquiry starts the same way: send us the scheme, and we talk you through the numbers. Our experts issue indicative terms on most development finance projects within 24 to 48 hours, so you get a straight answer on what leverage is realistic before you commit to a site. Whether you are financing your first ground-up scheme or your tenth, use this guide as a starting point and ask us for a quote tailored to your project. Stretched senior debt is not right for every developer, but for the right scheme it is one of the most efficient ways to fund property development in Ealing.

What is stretch senior financing? Stretch senior financing is a single first-charge development facility that advances a higher proportion of total cost, typically 75 to 85%, than standard senior debt. It combines what would otherwise be a senior loan and a mezzanine tranche into one facility from one lender, at one blended rate, without a separate second charge or intercreditor agreement.

How is stretch senior different from mezzanine finance? Mezzanine finance is a separate second-charge loan that sits on top of senior debt and is repaid after it. Stretch senior debt achieves similar leverage inside one first-charge facility, so there is no second lender, no second charge and no intercreditor agreement. Mezzanine can usually reach slightly higher leverage, up to 90% of cost, where stretch senior tends to stop nearer 85%.

How much deposit do I need for stretch senior development finance? Because a stretch senior facility funds up to 85% of cost, the developer typically needs to contribute 15 to 25% of total project costs as equity. That residual has to cover the equity share of the land, early professional fees and a contingency, and it can come from developer cash or from an equity partner funding the gap in return for a share of profit.

Is stretch senior cheaper than senior plus mezzanine? Often, but not always. Stretch senior debt is priced above standard senior debt but its blended rate usually undercuts a senior loan combined with expensive second-charge mezzanine finance, and it saves a second lender's fees and legal costs. Where you need to push past 85% of cost, the mezzanine route may be the only way to get there, and the comparison shifts.

Data sources: HM Land Registry Price Paid Data 2025; Ealing Council Planning Annual Report 2024/25; ONS Mid-Year Population Estimates 2024. Rates and leverage bands are indicative and vary by lender and scheme.