What Stretch Senior Debt Actually Is
You get a single development loan that advances to a higher loan-to-cost, usually 80 to 85%, than standard senior debt would, and without a separate mezzanine facility behind it. One lender takes a first charge and provides the whole debt.
That’s the simplicity you’re buying. There is no second-charge lender to negotiate with, no inter-creditor agreement between two funders, and no second set of arrangement and monitoring fees coming out of your cash flow before a brick is laid, so when the offer comes back you’re reading one term sheet rather than a senior lender stitched to a mezzanine fund. What you pay for it is a higher price across the whole facility.
Stretch Senior vs Senior Plus Mezzanine
You’d otherwise reach the same gearing with two loans stacked. Standard senior debt advances to roughly 65 to 70% of cost, and mezzanine finance fills the gap up to your target equity on a second charge behind it.
Stretch senior collapses that stack into one first charge, filling the same gap to 80 to 85% of cost, but the lender prices the entire facility higher to reflect the extra exposure it’s taking. You can’t have the low senior rate and the high gearing at the same time, and the stretched price applies across the whole loan rather than only to the part above 70%, so your cash flow carries it every month of the build.
The Typical Parameters
You’ll usually see stretch senior advance to around 80 to 85% of total project cost, capped at roughly 70 to 75% of gross development value. Rates run higher than pure senior but below mezzanine, around 1.1 to 1.8% a month across the whole facility.
Your own equity still has to show up, at 15 to 20% of total project cost, alongside an arrangement fee of about 1.5 to 2%. Those numbers move with the scheme and your track record, so treat them as the shape of the market rather than a quote. The ratio is also tested again at every drawdown, and when your costs run ahead of the certified schedule, it’s your cash flow that covers the gap until the next tranche clears.
When to Choose Stretch Senior over Mezzanine
You’ll favour stretch senior when simplicity matters: one lender, one set of legal documents, one monitoring arrangement. On a smaller scheme, or a first deal at this level of gearing, stripping out the mezzanine layer cuts both execution risk and cost.
Mezzanine takes over above 85% of cost, where stretch senior simply stops, and on bigger schemes it can also come out cheaper: a low senior rate on the bulk of the debt plus a small, dearer mezzanine tranche sometimes beats one stretched rate on everything. Availability decides this as often as price does. If no stretch senior lender is active on your scheme type, a mezzanine fund behind a standard senior loan is the only route left, and the second lender adds time before your cash flow sees a first drawdown.
What Stretch Senior Costs
You pay the stretched rate, 1.1 to 1.8% a month, on the entire loan rather than only on the part above standard senior, plus an arrangement fee of around 1.5 to 2%. That higher headline is the price of the extra gearing.
Your saving is structural, and it lands on your cash flow up front rather than over the term: one valuation, one monitoring surveyor and one set of legals, with no second lender’s arrangement and monitoring fees on top. Whether that beats a mezzanine stack is a matter of your own numbers rather than of which structure sounds simpler. That’s the comparison that decides it. Run the total finance cost of both routes against your gross development margin before you choose.
Stretch Senior Debt FAQs
What is stretch senior debt in development finance?
Stretch senior debt is a single development finance loan that advances to a higher loan-to-cost than standard senior debt, usually around 80 to 85%, without a separate mezzanine facility behind it. One lender takes a first charge and provides the whole debt. It lets a developer borrow more against the same scheme than pure senior debt would, but the lender prices the entire facility at a higher rate to reflect its increased exposure.
How does stretch senior compare to senior plus mezzanine?
Standard senior debt advances to roughly 65 to 70% of cost, with mezzanine finance filling the gap up to your target on a second charge. Stretch senior fills that same gap to 80 to 85% from a single first charge, so there’s no second lender, no inter-creditor agreement and no second set of arrangement and monitoring fees. The trade-off is that the whole facility is priced higher, rather than just a small top slice.
When is mezzanine better than stretch senior?
Mezzanine tends to win in three situations: when you need to borrow above about 85% of total cost (stretch senior has a ceiling); when the blended cost of a low senior rate on the full amount plus a higher mezzanine rate on a small tranche is cheaper than the stretched rate on the whole loan; and when no stretch senior lender is active on your scheme type or geography, so a mezzanine fund behind a standard senior lender is the only route.
How much does stretch senior debt cost?
Stretch senior rates run around 1.1 to 1.8% per month across the whole facility, higher than pure senior debt but below mezzanine, with an arrangement fee of about 1.5 to 2%. Because there’s only one lender, you avoid a second set of arrangement and monitoring fees and reduce legal costs. Whether it works out cheaper than a senior-plus-mezzanine stack depends on the specific deal, so model both against your gross development margin.
How we reviewed stretch senior debt
What we covered. We explain how stretch senior debt works in 2026: higher-leverage development finance from one lender, how it compares to senior plus mezzanine, the typical parameters, and what it costs. We don’t rely on comparison-site summaries or aggregator data.
Data sources. Lending limits, rate and equity ranges were checked against primary sources in July 2026, including specialist lender product pages and the lenders we assess in our development finance reviews and roundup.
How we handle gaps. Where a figure varies by lender, we give the market range rather than a single false-precision number, and we flag that your terms depend on the scheme, the margin and your track record.
Update cadence. We re-verify this page at least monthly, and whenever market pricing moves. The verification date reflects the most recent full review. Some links on this page are affiliate links, see our editorial policy.
Regulatory note. This page is editorial content, not regulated financial advice. Development finance to a limited company or investor is generally unregulated lending, so compare facilities and read the terms before you sign.