Mezzanine Debt Is Debt: What the Waterfall Actually Pays Out

There is a lazy shorthand in this market that treats mezzanine debt as a sort of soft equity. It is not. It is borrowing, with a rate, a term, security and a repayment date, and the difference matters most at the exact moment you would rather it did not: when a scheme underperforms and there is not enough money to go round.

The clearest way to see it is to follow the money backwards. Sales proceeds arrive, the senior debt is cleared first, the mezzanine debt is cleared second, and the equity gets what is left. That order is written into an intercreditor agreement, it does not flex, and it explains every difference in price between the three layers of capital in a development. The senior finance mezzanine finance ranks behind is cheap for the same reason the equity above it is expensive.

What is mezzanine debt in simple terms?

Mezzanine debt is a subordinated loan secured behind a first charge lender and repaid ahead of the owners of the business. Subject, position, priority. That is the whole definition, and the two words carrying the weight are subordinated and loan.

Subordinated means the debt ranks below other debt. Loan means it is not capital contributed to the venture, it is capital lent to it. A mezzanine lender has no share in the special purpose vehicle, no entitlement to profit as an owner, and no vote on whether to sell a unit at a discount. What it has is a contract, a second charge, a debenture, usually a charge over the shares, and a date by which it expects its money back with interest.

In real estate this arrives in a predictable shape. Senior debt reaches 60 to 70 percent of gross development value across our lender panel, mezzanine debt stretches total borrowing to 85 to 90 percent LTGDV, and the developer’s equity falls to 10 to 15 percent of GDV. That structure is the entire commercial point: the same real estate project funded with a third of the equity.

What is the difference between senior debt and a mezzanine loan?

Five differences, and only the first is really independent. Everything else follows from it.

Priority. Senior debt is paid first out of every pound of proceeds. A mezzanine loan is paid second. Nothing in the documents can change that while the senior facility is outstanding.

Security. Senior debt takes a first legal charge. Mezzanine debt takes a second charge, which is worth only what remains after the senior debt is repaid, so the mezzanine lender widens its security with a debenture over the company and a charge over the shares in the special purpose vehicle.

Price. Senior development debt starts from 6.5 percent a year on our lender panel, priced over a Bank of England base rate of 3.75 percent held since December 2025. Mezzanine debt starts from 12 percent a year, roughly 1 percent a month. That spread is not a market failure. It is the price of being second.

Control. The senior lender approves the drawdown schedule, appoints the monitoring surveyor and, when things go wrong, controls the sales strategy. The mezzanine lender agrees in advance not to interfere while the senior debt is outstanding.

Term. Both are short. Senior development facilities and mezzanine debt both run 12 to 24 months, because the mezzanine debt cannot mature before the senior facility does; the senior lender will not permit it.

Why is subordinated debt priced so far above the first charge?

Because the recovery arithmetic in a bad outcome is brutal, and the rate is the compensation for it.

Work a distressed sale through. On a scheme with a gross development value of £5,000,000, senior debt at 65 percent LTGDV is £3,250,000 and a mezzanine layer taking total debt to 87 percent is a further £1,100,000. Now suppose the scheme stalls and the site is sold part built for £3,600,000, with £150,000 of costs of sale.

The senior debt takes £3,250,000 plus its accrued interest and fees. Assume that is £3,450,000. The mezzanine debt is entitled to the next £1,100,000 plus interest and receives what is left, which is nothing. The equity, already behind it, receives less than nothing, because the guarantees are then called.

That is why subordinated debt prices where it does. The mezzanine tranche is not exposed to the whole asset. It is exposed to the top slice of value, in this case the twenty two percentage points of gross development value between 65 and 87 percent, which is exactly the part of any real estate project that vanishes first when the market softens.

How does the waterfall pay out mezzanine finance?

Three scenarios on the same scheme make it obvious. Use the £5,000,000 GDV project above, total costs of £3,900,000, senior debt of £3,250,000 and mezzanine finance of £1,100,000, with the developer’s equity at £250,000 and 18 months of rolled up interest on both facilities.

In the base case the scheme sells for £5,000,000. Senior debt takes £3,450,000 including interest and fees. The mezzanine finance takes £1,298,000, being £1,100,000 plus 12 percent a year rolled up. Sales costs take £150,000. The equity receives £102,000 plus its £250,000 back. Thin, but the developer used £250,000 rather than £1,350,000 of its own capital.

In the strong case the scheme sells for £5,500,000. Senior debt and mezzanine finance are paid exactly the same amounts, because debt does not participate in upside. The equity takes the entire additional £500,000. This is the single most important line in the article: the return on the mezzanine finance is capped and the return on the equity is not.

In the weak case the scheme sells for £4,400,000. Senior debt takes £3,450,000, sales costs take £132,000, and the mezzanine finance takes £818,000 against the £1,298,000 it is owed. The equity is wiped out and the mezzanine lender is short £480,000, which it pursues under the guarantees. Equity absorbs the first loss and mezzanine debt absorbs the second.

Is mezzanine financing debt or equity when the deal goes wrong?

Debt, and this is the moment the distinction stops being semantic.

An equity partner in the same £480,000 shortfall shares the loss. It contributed capital to the venture, it ranks last by agreement, and when the money runs out its investment is simply worth less. There is no claim to pursue, because there was never a promise to repay.

A mezzanine lender has a promise to repay. The debt financing is a contract, the shortfall is a debt, and the guarantors are liable for it. Some structures soften this with a limited recourse carve out or a cap on guarantee liability, and negotiating that cap is worth more than negotiating twenty five basis points off the rate.

An equity kicker does not change the analysis. Where mezzanine financing carries a profit share on top of its coupon, the lender is still a creditor. It is being paid more for the same debt claim, not converted into an owner. Investors coming to UK development from corporate mezzanine financing sometimes assume otherwise, and the intercreditor agreement corrects them quickly.

How does junior debt compare with preferred equity?

They look similar on a cash flow forecast and behave completely differently in a workout.

Junior debt sits outside the special purpose vehicle as a creditor, secured by a second charge and enforceable, in principle, through the courts. Preferred equity sits inside the vehicle as a shareholder with contractual priority over the ordinary shares: a preferred return paid before the developer sees anything, then usually a share of the profit above it.

Three practical differences follow. Preferred equity does not need the senior lender’s consent to a second charge, which makes it faster to put in place and popular where a senior lender refuses to permit junior debt at all. Preferred equity has no repayment date that can be breached, so it cannot cause a default. And preferred equity is far more expensive in a good outcome, because a preferred return plus a profit share on a strong scheme costs multiples of 12 percent a year.

For most UK development, junior debt is the cheaper structure and preferred equity is the available one when the senior lender says no. The choice is more often driven by what the first charge lender will consent to than by a comparison of the two on their merits.

What does a mezzanine layer cost, and what are the pros and cons of it?

Interest from 12 percent a year on our lender panel, an arrangement fee of 1 to 2 percent of the facility, a consent fee to the senior lender, legal costs for three parties, a valuation addressed to both lenders, and on some facilities an exit fee charged on redemption.

On the £1,100,000 mezzanine layer in the worked example, that is roughly £198,000 of rolled up interest over 18 months, £11,000 to £22,000 of arrangement fee, and perhaps £25,000 of combined legal and consent costs. Call it £235,000 of cost to avoid contributing £1,100,000 of capital.

The pros and cons come down to what that £235,000 buys. On the plus side: the developer keeps every pound of upside, keeps control of the vehicle, and frees £1,100,000 of capital to run other schemes, which is why capital efficiency rather than desperation drives most of this business. On the minus side: the cost is fixed while the outcome is not, the debt is due on a date whatever the market is doing, guarantees put personal assets behind a corporate loan, and total leverage at 85 to 90 percent LTGDV leaves almost no room for a valuation miss.

Why does institutional capital fund the mezzanine tranche?

Because a contractual double digit return secured on real estate is a genuinely attractive investment when the underwriting is good, and because the alternatives are worse.

Investors allocating to property have three broad choices of investment. Senior debt is a safe investment yielding near the cost of money. Equity investment is unbounded on the upside and can lose everything. The mezzanine tranche sits between the two with a fixed coupon, a security package and a first loss cushion of 10 to 15 percent of gross development value beneath it in the form of the developer’s own equity.

That risk and return profile has pulled a great deal of institutional and private investment into UK real estate junior debt financing over the last decade, which is the reason a mid sized development business can access mezzanine debt at all. Twenty years ago this investment was available only on very large schemes. The growth of specialist funds changed that, and the effect on smaller developers has been to make an equity partner optional rather than inevitable.

It also explains why mezzanine finance terms tighten quickly when values wobble. These investors are buying a fixed return against a fixed equity cushion, and when the cushion looks thinner the response from investors is lower leverage rather than a higher rate. The mezzanine finance mezzanine funds will write in a falling market is smaller rather than dearer, which is the opposite of what most developers expect.

If you are pricing a funding gap on a live scheme, we arrange mezzanine finance alongside senior development finance across a panel of over 100 lenders, and we will say plainly when the margin is too thin to carry junior debt and equity and joint venture funding is the safer structure. Where the building is finished and the problem is the sales period rather than the funding, development exit finance is the product that fits.

Construction Capital is a trading name of Lenzie Consulting Ltd, registered in England and Wales, company number 08174104. We are a commercial finance broker and introducer, not a lender, and we are not authorised by the FCA. Rates and terms are indicative, vary by lender and deal, and are never an offer of finance. Written by Matt Lenzie.