Guide · 9 min read
How senior and mezzanine debt differ on a development: charge ranking, pricing, covenants, intercreditor terms, and when adding mezzanine improves your return on cash.
Written by Matt Lenzie · Published 11 June 2026
Advice from
Matt Lenzie · 25+ year career banker (Bank of Scotland, Lloyds Banking Group). £300m+ of equity and debt raised for property clients.
25+ year career banker (Bank of Scotland, Lloyds Banking Group). £300m+ of equity and debt raised for property clients.
On the same six-house scheme, secured against the same site, two lenders quote two prices: 8.5% per annum for one loan, 15% per annum for the other. Neither lender is being generous or greedy. The first holds a first legal charge and is repaid before anyone; the second holds a second charge and collects only what is left. As of June 2026, that single fact, position in the repayment queue, explains nearly every difference between senior debt and mezzanine debt in UK development finance: the pricing gap, the paperwork, the monitoring, and the very different ways each behaves when a scheme goes wrong.
This guide works through the comparison a developer actually needs: what charge ranking means at enforcement, why the pricing gap is structural, how covenants and monitoring differ, what the intercreditor deed between the two lenders does, and the worked maths showing when adding a mezzanine layer improves your return on cash. The layers themselves are mapped on our capital stack page, and mezzanine as a product is covered in our guide to what mezzanine finance is.
A development site in England and Wales can carry more than one legal charge, registered at HM Land Registry in strict order. The senior lender's first charge gives it the right to appoint a receiver, sell the site, and repay itself in full, including default interest and enforcement costs, before the holder of any later charge sees a pound. The mezzanine lender's second charge gives it the same powers over whatever is left, subject to the intercreditor deed covered below. Equity, the developer's own money, has no charge at all and stands behind both.
The worked consequence on the house scheme, £2,400,000 gross development value (GDV, the completed scheme's open-market value), with a senior facility of £1,235,000 at exit including rolled interest and a mezzanine balance of £515,000: if the scheme is enforced and sells complete for £1,800,000 net of costs, the senior collects its full £1,235,000, the mezzanine collects £515,000 with £50,000 to spare for equity. If it sells for £1,500,000, the senior is still whole and the mezzanine recovers £265,000, a 49% loss, while the developer's equity is gone entirely. The senior lender does not lose a pound until net recoveries fall below £1,235,000, roughly half the appraised GDV. Ranking is not a technicality; it is the entire risk allocation, settled before the first drawdown.
As of June 2026, senior development finance prices at 7% to 11% per annum over a base anchored to the Bank of England Bank Rate, with 1% to 2% fees each end. Mezzanine prices at 14% to 20% per annum, often with a 2% arrangement fee and sometimes an exit fee or small profit participation. The gap is mechanical. The senior's £1,235,000 is insulated by everything above it: the developer's equity, the profit margin, and the whole mezzanine layer, around £1.1m of value that must burn before senior money is touched. The mezzanine's £515,000 is insulated only by the equity and the margin. On a scheme geared to 90% of cost with 20% profit on cost, combined debt sits at about 80% of GDV: once values fall 12% to 15% and sales costs are paid, the recovery is into the mezzanine's slice, and every further pound of decline is a mezzanine loss until the layer is wiped, while the senior remains untouched until values have fallen by roughly a third. Price follows that exposure. A mezzanine lender charging senior rates would be mispricing its position in the queue, and the queue, not negotiation, is why no amount of relationship gets mezzanine at 9%.
The senior lender runs the operational machinery of the loan. It instructs the monitoring surveyor, certifies and funds monthly drawdowns in arrears, holds the cost-to-complete test (the requirement that undrawn facility plus remaining equity always covers the remaining build cost), and polices loan-to-cost and loan-to-GDV covenants set at its own ceilings, typically 65% LTC and 60% to 65% LTGDV as of June 2026. Its consent is needed for build contract variations above a threshold, changes of contractor, and sales below minimum release prices.
The mezzanine lender mostly watches. It usually relies on the senior's monitoring surveyor reports rather than appointing its own, sets its covenants one notch wider (combined LTC at 90%, combined LTGDV at 75% to 80%), and concentrates its protection in two places the senior does not: a tighter grip on the sponsor, through personal guarantees commonly capped at 20% to 100% of its loan and a pledge over the SPV's shares, and information rights that trigger early. The share pledge is the quietly important one: enforcing it lets the mezzanine lender take over the borrowing company itself, stepping into the scheme above the senior debt without touching the senior's charge, which is often a faster workout route than a second-charge sale. Developers comparing term sheets should read the covenant schedule as carefully as the rate: a cheap mezzanine coupon with a hair-trigger combined-LTGDV covenant can be the more expensive loan on any scheme where the ONS house price index wobbles mid-build.
Where senior and mezzanine sit on one scheme, the two lenders sign an intercreditor deed, sometimes styled a deed of priority, and it routinely takes longer to negotiate than either facility agreement. Three clause families do the work. The ranking and payment stop fixes the order absolutely and switches off all payments to the mezzanine while the senior is in default, so mezzanine interest stops flowing the moment trouble starts. The standstill bars the mezzanine lender from enforcing its security for a defined window after a default, commonly 90 to 180 days, giving the senior control of the response; a long standstill effectively converts the mezzanine into a spectator for half a year. Cure rights run the other way: they let the mezzanine lender remedy a senior default, by injecting the missing interest or equity, or buy out the senior loan at par, taking the first charge and control of the workout itself. Each clause is the answer to one question: when this scheme is in trouble, who is allowed to do what, in which order. Developers never sign the deed, but its terms decide whether a wobbling scheme gets a patient restructuring or a fast receivership, which is why we structure both tranches together and agree the intercreditor heads before either lender instructs lawyers.
Mezzanine finance exists for one reason: it releases developer cash, and cash has a return somewhere else. Worked on the house scheme, £1,700,000 of land and build costs, £500,000 of profit before mezzanine costs, 18 months end to end.
| Measure | Senior only, 65% LTC | Senior + mezzanine, ~90% LTC |
|---|---|---|
| Senior facility | £1,105,000 at ~8.5% pa | £1,105,000 at ~8.5% pa |
| Mezzanine facility | None | £425,000 at 15% pa + 2% fee |
| Developer cash in (incl working capital) | ~£600,000 | ~£250,000 |
| Mezzanine cost over 18 months | £0 | ~£100,000 |
| Developer profit | ~£500,000 | ~£400,000 |
| Return on cash, 18 months | ~83% | ~160% |
The mezzanine costs £100,000 and releases £350,000. The released cash, deployed into a second scheme at anything like the same margin, earns far more than the coupon it left behind, which is the whole argument for the second charge in one line: pay 15% on a slice to keep earning 80%+ on the rest. The argument fails in two situations. Thin schemes, where profit on cost is below about 20%, because the fixed £100,000 comes out of a margin that no longer covers it with room to spare. And developers with no second use for the cash, for whom the released £350,000 sits in a deposit account earning a fraction of what the mezzanine charges. Where the cash requirement needs to fall but two lenders feel heavy, stretch senior finance reaches 85% to 90% of cost in a single facility, usually at a blended price between the two.
| Dimension | Senior debt | Mezzanine debt |
|---|---|---|
| Security ranking | First legal charge, repaid first at enforcement | Second charge, repaid after senior in full |
| Slice of the stack | Up to 60-65% of cost, 60-65% of GDV | From the senior ceiling to ~90% of cost, 75-80% combined LTGDV |
| Pricing | 7-11% pa, 1-2% fees each end | 14-20% pa, ~2% arrangement, occasional exit fee |
| Interest treatment | Rolled into the facility, paid at exit | Rolled, paid at exit after senior |
| Monitoring | Appoints the monitoring surveyor, certifies drawdowns | Relies on the senior lender's monitoring, holds information rights |
| Covenants | LTC/LTGDV at its ceilings, cost-to-complete test | Combined-leverage covenants one notch wider, sponsor-focused |
| Sponsor security | Debenture, PG typically capped 10-25% of loan | Share pledge plus PG, commonly 20-100% of loan |
| On default | Controls enforcement, sells via receiver | Bound by standstill, may cure or buy out the senior at par |
The two lenders underwrite the same scheme through different ends of the telescope. The senior committee tests the downside: can this site, half-built or complete, repay £1,235,000 in a forced sale into a falling market, which is why its questions are about cost-to-complete, contractor covenant strength and the bulk sale value of the units. The mezzanine committee tests the margin: its entire recovery lives in the slice between 65% and 80% of GDV, so its questions are about the evidence under the GDV, the sales rate assumptions, and the sponsor's behaviour under stress, which is what the heavier personal guarantee is really buying. UK Finance's market data has shown bank development lending concentrating at conservative leverage since 2023, with non-bank lenders taking the layer above, and that split is durable because it follows capital treatment: regulated banks hold materially more capital against high-LTC development exposure, so the slice above 65% migrates to funds that price it at 14% to 20% instead. A developer who understands which question each lender is answering presents one scheme two ways, and gets better terms from both.
Senior debt holds the first legal charge over a development site and is repaid first from any sale, including a forced one; mezzanine debt holds a second charge and is only repaid after the senior lender has recovered in full. That queue position drives everything else: as of June 2026 senior development finance prices at 7% to 11% per annum and advances up to 60% to 65% of project costs, while mezzanine prices at 14% to 20% per annum for the slice that takes combined leverage to around 90% of costs. Same scheme, same security address, very different risk and price.
Mezzanine debt is a second-charge development loan that sits between the senior facility and the developer's equity in the capital stack, named after the mezzanine floor that sits between two storeys. It funds the layer of cost the senior lender will not reach, typically from 65% up to around 90% loan to cost, is secured by a second legal charge plus usually a share pledge and personal guarantee, and is repaid at exit immediately after the senior loan. It is genuine debt with a fixed coupon and a repayment date, not a profit share.
Yes, but second in line. A UK development mezzanine lender typically takes a second legal charge over the site, a charge or pledge over the shares of the borrowing SPV, a debenture, and a personal guarantee from the developer, commonly capped at 20% to 100% of the mezzanine loan. The security package looks similar to the senior lender's on paper; the difference is that at enforcement the second charge only collects what is left after the first charge is repaid in full, which is why identical security supports a price roughly twice as high.
The intercreditor deed, also called a deed of priority, is the contract between the two lenders that fixes who ranks where and who may act when. Its load-bearing clauses are the ranking and payment stop (no money to the mezzanine while the senior is in default), the standstill (a period, commonly 90 to 180 days, during which the mezzanine lender cannot enforce its security), and cure rights (the mezzanine lender's right to remedy a senior default, or buy out the senior loan at par, to protect its own position). Developers do not sign it as a lender but feel it on every distressed scheme, because it scripts who controls the workout.
When the return on the cash it releases beats its cost. As of June 2026 a mezzanine slice of £425,000 on an 18-month scheme costs roughly £100,000 in coupon and fees; if it releases £350,000 of developer equity that would otherwise sit in the scheme, the developer's return on cash roughly doubles, and the freed equity can be earning on a second site. It stops being worth it on thin schemes, below about 20% profit on cost, where the fixed mezzanine cost eats the margin that protects everyone, and where mezzanine lenders decline in any case.
Last reviewed: June 2026.
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