Mezzanine Finance Rates: What Second-Charge Money Costs and When Equity Is Cheaper

Mezzanine finance is a form of second-charge development funding that sits between senior debt and equity in the capital stack, priced higher than the senior loan because it takes more of the risk. If you are weighing up mezzanine finance rates for a Hounslow scheme, the headline coupon is only part of the picture: the true cost combines the interest rate, the arrangement and exit fees, sometimes a profit share, and the way that money compounds over an 18-month build. This guide sets out how mezzanine finance is priced, what actually drives your rate, how the interest maths works when it rolls up, how the second charge and intercreditor agreement fit behind senior debt, and the point at which JV equity becomes cheaper than stacking more debt onto a scheme. We arrange senior debt, mezzanine finance and JV equity for property developers across Hounslow and west London, so the ranges below reflect what our funding partners are quoting.

How mezzanine finance is priced

Mezzanine finance is priced as a package, not a single number. Mezzanine financing for UK real estate development typically carries a coupon in the region of 10 to 18 per cent a year, with most development mezzanine finance landing between 12 and 15 per cent depending on risk. That is more than senior debt finance and less than pure equity, which is exactly what its position in the capital structure should cost. On top of the coupon sit two fees that many developers overlook when they compare providers. The arrangement fee, charged on drawdown, usually runs at 1 to 2 per cent of the mezzanine facility. The exit fee, charged at redemption, adds another 1 to 2 per cent, and some providers levy it against gross development value rather than the loan, which makes it materially larger.

On larger or higher-risk schemes, a mezzanine financing provider may also take a profit share or an equity kicker: a slice of the scheme's profit on top of the coupon, in exchange for a lower headline rate. That is the point at which mezzanine debt starts to behave like equity finance, and it is worth understanding current mezzanine finance structures for developers before you sign, because a low coupon with a fat profit share can cost more than a higher rate with none. When you compare mezzanine finance rates between funding providers, add the coupon, the arrangement fee, the exit fee and any profit share together across the life of the loan. That blended figure, not the advertised rate, is what the mezzanine finance actually costs, and it is the number our funding partners quote so that property developers can compare providers on a like-for-like basis.

What drives your mezzanine finance rate

Mezzanine finance rates are risk-priced, so the same developer can be quoted very different terms on two schemes. Five factors move the rate more than any others.

The first is leverage, measured as loan to GDV across the combined stack. Senior debt sits comfortably up to about 60 to 65 per cent of gross development value, so mezzanine finance is pricing the risk in the band above that. A mezzanine layer that lifts total leverage to 75 per cent of GDV is far cheaper than one pushing to 90 per cent of cost, because the higher the debt climbs against GDV, the thinner the equity cushion protecting the lenders if values slip.

The second is your track record. A developer with several completed schemes of similar size and type will be quoted keener mezzanine finance rates than a first-timer, because delivery risk is lower. The third is the asset itself: a straightforward residential development in a liquid market like Hounslow prices better than a complex mixed-use or a niche commercial property scheme, because the exit is more certain. The fourth is the intercreditor position, covered below, because a mezzanine funding provider that cannot enforce cleanly behind the senior lender will charge for that constraint. The fifth is scheme size and term. Small facilities carry proportionally higher fees, and a longer development timeline means more rolled-up interest, so a slow scheme costs more in mezzanine finance even at the same rate.

Because mezzanine finance is unregulated commercial development finance rather than consumer lending, providers are free to price each facility to its risk, and the market for it is deep. Development mezzanine funding in the United Kingdom is provided by specialist debt funds, challenger banks and private lenders rather than the high street, and while the lenders themselves are businesses regulated for other activities, this type of business funding sits outside the consumer remit of the Financial Conduct Authority and the Prudential Regulation Authority. That is why mezzanine finance rates are negotiated deal by deal rather than published as a rate card.

Rolled-up interest and the real cost of mezzanine debt

Development mezzanine finance almost never asks for monthly payments. Instead the interest rolls up, compounding on the outstanding balance and repaid in a lump at practical completion alongside the capital and the exit fee. That is convenient during the build, when the scheme has no income, but it changes the arithmetic. A 14 per cent coupon that rolls up over an 18-month term does not cost 14 per cent: it costs closer to 22 per cent of the drawn amount by the time you redeem, once the interest compounds on itself and the arrangement and exit fees are added.

Take a simple worked example. A developer draws £500,000 of mezzanine finance at a 14 per cent coupon with a 2 per cent arrangement fee and a 2 per cent exit fee, over an 18-month build. The arrangement fee is £10,000. Rolled-up interest over 18 months compounds to roughly £113,000. The exit fee is £10,000. Total cost of that mezzanine finance is about £133,000 on £500,000 drawn, or 27 per cent of the facility across the term. Model your own numbers with our development finance calculator before you commit, because the gap between the headline rate and the redemption figure is where developers most often misjudge their profit.

Second charge mechanics and the intercreditor agreement

Mezzanine finance is secured by a second charge over the development SPV and its assets, ranking behind the senior lender's first charge. That ranking is the entire reason the rate is higher: if the scheme fails and the security is sold, the senior debt is repaid in full before the mezzanine provider sees a penny, and only then does any equity partner recover. The mezzanine layer is absorbing the loss first, so it is paid to take that risk.

Because two lenders now hold security over the same SPV, they sign an intercreditor agreement. This sets out who gets paid in what order, what each lender can and cannot do on a default, when the mezzanine provider is allowed to enforce its second charge, and how the two coordinate if the scheme needs more money than planned. A senior lender that grants the mezzanine provider generous enforcement rights is taking on more risk itself, so intercreditor terms are negotiated hard, and they feed straight back into your mezzanine finance rate. We manage that negotiation between the senior and mezzanine funders so the developer is not caught between two sets of solicitors. Personal guarantees are common on the senior debt and sometimes on the mezzanine loan, and a developer should be clear which guarantees each layer of funding requires before drawdown.

Blended cost: senior debt plus mezzanine worked through

The reason developers use mezzanine finance despite the rate is that it is still cheaper than equity, and it lets a smaller amount of the developer's own capital control a larger scheme. The way to judge it is the blended cost of the whole debt stack.

Consider a Hounslow scheme with a £3m gross development value and £2.4m of total development cost. Senior debt at 65 per cent of GDV provides about £1.95m at, say, 9 per cent all-in. To reach 85 per cent of cost, the developer adds £490,000 of mezzanine finance at an all-in cost of around 15 per cent once fees are included. Blend the two facilities by the amount each contributes and the combined cost of the debt lands near 10.2 per cent. That is the number to compare against the alternative, which is bringing in more equity or a JV partner. The mezzanine finance has lifted leverage from 65 to 85 per cent of cost and cut the developer's equity requirement by roughly £490,000, while adding only about 1.2 percentage points to the blended cost of the senior debt. On a scheme that clears its numbers, that is efficient funding.

Advantages and disadvantages of mezzanine finance

The benefits of mezzanine finance are straightforward. It lets property developers access more funding than senior debt finance alone provides, so a smaller amount of equity controls a larger scheme and the developer keeps more of the profit. Because the interest on this type of debt finance rolls up, there is nothing to service during the build, which protects cash flow. And because a mezzanine loan is cheaper than bringing in a full equity partner, it is often the most efficient way to fill the band of cost just above the senior facility. Property developers who want to apply their own capital across two or three schemes at once rather than sinking it all into one apply for mezzanine funding precisely for that leverage. Unlike a standard business loan, mezzanine development finance is underwritten against the scheme's GDV and profit rather than the trading history of a business, which is what gives newer developers access to it.

The disadvantages are the mirror image. Mezzanine finance rates are high, the rolled-up cost compounds, and the second charge means the mezzanine financing provider can, in a worst case, take control of the scheme on a default. Stack too much of it and the blended cost of debt starts to eat the profit the leverage was meant to protect. This is also where bridging finance is sometimes confused with mezzanine: bridging is short-term first-charge funding used to acquire or refinance a real estate asset quickly, whereas mezzanine finance is second-charge development funding that sits behind the senior loan through the build. They solve different problems, and a developer who needs speed on a purchase wants bridging finance, not mezzanine. Weighed together, the benefits of the leverage usually outweigh the cost on a scheme with a healthy margin, and rarely do on a thin one.

When JV equity is cheaper than more mezzanine debt

There is a crossover point beyond which stacking more mezzanine debt costs more than it is worth. As the combined stack climbs past about 85 to 90 per cent of cost, mezzanine finance rates rise steeply, because the layer is now sitting where equity normally would, absorbing almost all of the downside. At that leverage a provider may quote 18 per cent plus a profit share, and the rolled-up cost of that money over an 18-month build can consume a large share of the developer's profit.

Past that point, JV equity is often the cheaper and safer choice. A joint venture equity partner funds the top of the capital stack in exchange for a share of the profit rather than a fixed coupon, so there is no compounding interest eroding the scheme during the build, and usually no personal guarantee on the equity. If the scheme underperforms, a profit share flexes down with the outcome, whereas rolled-up mezzanine interest is owed in full regardless. Preferred equity sits between the two, taking a fixed preferred return ahead of a profit share. The right structure depends on how much of the cost you need funded: mezzanine finance for the band just above senior debt, JV equity or preferred equity for the layer above that. We model the full capital stack, compare the blended cost of a debt-heavy structure against a JV equity structure, and arrange whichever leaves more profit in the developer's hands. You can see the full range of funding we broker on our services page, or talk to our team about a live scheme.

Mezzanine finance in the Hounslow market

Local market conditions feed directly into mezzanine finance rates, because providers price the certainty of your exit. Hounslow supports that case. Average values sit at around £460 per square foot according to HM Land Registry Price Paid Data 2025, which gives a clear, evidenced GDV for the sales assumptions in a development appraisal. The borough's planning approval rate of 76 per cent, according to the Hounslow Council Planning Annual Report 2024/25, tells a mezzanine provider that a well-prepared scheme is likely to keep its consent, which reduces risk and supports a keener rate. With around 40 active development sites tracked locally and typical timelines near 15 months from acquisition to practical completion, Hounslow is a liquid, deliverable market, and that liquidity is exactly what a second-charge lender wants to see before it prices the mezzanine layer behind the senior debt. Quoting real local evidence, with its source, in your appraisal is one of the simplest ways to earn a better rate.

Frequently asked questions

What is the interest rate for mezzanine financing?

Mezzanine finance rates for UK property development typically fall between about 10 and 18 per cent a year, with most development schemes priced at 12 to 15 per cent. The exact rate depends on how high the combined debt climbs against GDV, your track record, the asset and the intercreditor terms. Add arrangement and exit fees of 1 to 2 per cent each, plus any profit share, to work out the true cost.

How much does mezzanine finance cost?

More than the headline coupon suggests, because development mezzanine finance rolls up rather than being paid monthly. A 14 per cent coupon compounding over an 18-month build, with 2 per cent arrangement and 2 per cent exit fees, costs roughly 27 per cent of the drawn facility by redemption. Always model the rolled-up figure, not the annual rate.

Is mezzanine debt secured?

Yes. Mezzanine finance is secured by a second charge over the development SPV, ranking behind the senior lender's first charge. Because it is repaid only after the senior debt on a default, it carries more risk and a higher rate, and the two lenders sign an intercreditor agreement setting out the order of repayment and enforcement.

What is the difference between senior debt and mezzanine debt?

Senior debt is the first-charge development loan covering roughly 55 to 65 per cent of GDV at the lowest rate. Mezzanine finance is second-charge top-up funding that lifts leverage toward 85 to 90 per cent of cost, priced higher because it is repaid after the senior debt. Used together, they let a developer control a larger scheme with less of their own equity.

Data sources: HM Land Registry Price Paid Data 2025; Hounslow Council Planning Annual Report 2024/25; ONS Mid-Year Population Estimates 2024; indicative market rate ranges from Construction Capital funding partners. Figures are indicative, not live quotes, and subject to change. Arranged by Construction Capital.

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