Most development deals do not fall apart because of build costs or planning delays. It is usually the funding structure that causes problems. You reach a point where the senior lender will not go any further, and that gap in the capital stack starts to dictate how the deal actually unfolds from that point on. This becomes even more important when comparing different funding routes, particularly when looking at options like commercial mortgages vs bridging finance.
Most UK development structures sit around 60 to 70 percent senior debt, with additional layers used to push leverage higher where needed.
How that gap is filled matters more than most people expect. It has a direct impact on cost, on how much control you keep, and on what you actually walk away with once everything is repaid and the deal exits. This is typically where mezzanine debt or preferred equity come into the picture, and although they can look quite similar at a high level, they behave very differently once you get into the detail.
In practice, it is rarely a simple question of which is cheaper. It comes down to how confident you are in the exit, how much flexibility you need during the project, and whether you are prepared to trade some upside in return for reducing pressure elsewhere in the structure.
This guide breaks down how both options are used in UK property deals and where each one tends to make more sense depending on the situation.
Comparing mezzanine debt and preferred equity in a UK property finance deal.
How the Capital Stack Actually Works in UK Property Deals
In most deals, the funding does not come from one place – it is layered. A senior lender sits at the top providing the bulk of the debt, and they are the cheapest money in the stack, but also the most conservative. Once they have hit their limit on leverage, they will not stretch just because the deal almost works.
That is where the gap appears, and it is usually not small. You either leave more of your own cash in, or you bring in another layer behind the senior lender to close it. That second layer is where mezzanine debt or preferred equity tends to sit, and although they are both used to solve the same problem, they do not behave the same way once the deal is live. This is also where lenders start to look more closely at risk and structure, which ties into how commercial mortgage lenders assess risk in practice.
Underneath all of that is your own equity, which is the first to take any hit if things go wrong, but also where most of the upside sits if the project performs. The way these layers are put together is not just a technical detail – it changes how risk is shared, how returns flow, and how much room you actually have if the deal starts to move off plan.
What Mezzanine Debt Actually Looks Like in a UK Deal
Mezzanine debt tends to come in once the senior lender has drawn a line and the numbers still do not quite stack. It sits behind the senior loan, so it takes more risk, which is why the pricing is higher, but it allows you to push leverage further without bringing in another equity partner.
In practice, it is not always as simple as just adding a second loan. Most mezzanine lenders will want either a second charge or a share pledge over the borrowing entity, and they will spend a lot of time looking at the exit because that is ultimately how they get repaid. This is exactly the type of scenario covered in more detail in our guide to mezzanine finance in the UK.
If the exit is not clear, or the margin for error is too tight, they will either price for it heavily or step away altogether.
The cost is usually quoted as an annual rate, often somewhere in the low to mid-teens depending on the deal, but what really matters is how it is structured. Some lenders will want monthly interest, others will allow it to roll up, and in many cases there will be an exit fee or some form of profit participation layered in as well. That is where the true cost starts to move beyond the headline rate.
From a control point of view, mezzanine lenders generally stay in the background while things are going to plan. They are not looking to run the deal day to day, but they will have protections in place, and if the deal starts to drift or the senior lender becomes uncomfortable, their position becomes more active.
What Preferred Equity Looks Like in Practice
Preferred equity usually comes in when debt starts to feel too tight or the deal needs more flexibility than a lender will allow. It is not a loan, so there is no fixed repayment in the same way, which can ease pressure during the project, particularly where cash flow is uneven.
That flexibility comes at a cost. Investors are taking more risk, sitting behind the debt, so they will want a preferred return and often a share of the upside as well. On a strong deal, that can end up being more expensive than it first appears.
The bigger difference is how involved they are. Preferred equity investors tend to act more like partners than lenders, with a say in key decisions because their return depends on how the numbers land in reality. That can be helpful in the right situation, but it also means giving up some control and not retaining all of the profit.
Mezzanine Debt vs Preferred Equity – Cost Differences
When you sit down with the numbers, mezzanine is usually the easier one to pin down. You are given a rate, you can map it out, and you have a reasonable idea where you will end up, even if it is not cheap. Most of the time there are not many surprises – it is a question of whether the deal can carry it.
Preferred equity does not behave like that. You might start with a target return that looks manageable, but that is not really the number that matters. If the deal performs well, the investor shares in that, so what it actually costs only becomes clear once everything is finished and the figures are final.
Mezzanine is more fixed, but it can feel heavier while the project is running. Preferred equity can give more breathing room along the way, but you are giving something up on the back end and you do not always feel it until later.
Some deals suit one, some the other. It usually comes down to how tight things are and how certain you are on the exit, rather than just trying to decide which one looks cheaper at the start. This is also closely linked to how affordability and deal viability are assessed through commercial mortgage stress testing.
Control and Decision Making – What Actually Changes
You do not always notice the difference at the start – it tends to show up once the deal is moving and decisions need to be made. With mezzanine, the lender is there for the return, not to run the project, so as long as nothing is going off track, they generally stay out of the way.
They are still protected though. If timings slip or the numbers start to move the wrong way, they will not simply wait, and things can tighten quickly. But if the deal is performing as expected, you are usually left to get on with it.
Preferred equity is different in that sense. Investors are closer to the outcome, so they will want visibility on the bigger decisions, and in some cases a say in them as well. It is not constant involvement, but you are not operating completely independently either.
Some developers welcome that, especially on larger or more complex schemes. Others prefer to keep full control and manage the trade-offs elsewhere. It is less about right or wrong and more about how you want the deal to operate while it is running.
Security Position – Who Sits Where When It Matters
This only really becomes a focus when something goes wrong, but it is one of the most important differences between the two. Mezzanine sits behind the senior lender, so it is not first in line, but it still has some form of security, often through a second charge or a share pledge over the borrowing entity.
That means if things start to unravel, the mezzanine lender has a route to protect their position, although they are still relying on there being enough value left after the senior debt is cleared. It is not a comfortable place to be, but it is not unsecured either.
Preferred equity sits further down the stack. There is usually no direct security over the asset, so recovery depends on what is left once all the debt has been repaid. In a strong deal that is not an issue, but if values move or the exit does not go to plan, that is where the risk shows.
This is why the pricing differs. One has some protection built in, the other is relying more on the deal performing, and that gap in security position is what drives the difference in how each is used.
Risk and Return – How Each Side Looks at It
From the funding side, mezzanine is still about getting repaid first and foremost. The return is built around that expectation, so most of the focus goes into whether the numbers hold up and the exit feels realistic. It is not low risk, but it is not open-ended either.
Preferred equity is closer to backing the deal itself rather than just the loan. If it works, investors do well. If it does not, they feel it more. That is why the return expectations are higher – they are further down the stack and more exposed if things do not land as planned.
From a developer point of view, the trade-off shows up differently. Mezzanine tends to make the deal feel tighter while it is running, but whatever is left at the end stays with the developer. Preferred equity can take some of that pressure off along the way, but you are not retaining the full result if it performs well.
There is no single right answer. Some deals suit one approach more than the other, and it usually comes back to how strong the exit looks and what you are more comfortable giving up to get there.
For a full breakdown of what lenders need to see before approving a facility, see our bridging loan requirements page. For current rate ranges by LTV and asset class, see our bridging loan rates page.
When Each One Tends to Make More Sense
Mezzanine usually comes into it when the deal is close but does not quite get there on senior debt alone. Nothing major is broken, it just needs a bit more behind it, and using another layer of debt keeps things straightforward without bringing someone else into the equity.
It also tends to be the route when the focus is on what is left at the end. You take on more cost while it is running, but if it lands where you expect, you are not sharing part of the result, which is often the main reason developers go that way.
Preferred equity tends to appear in deals that are less straightforward. That might be around timing, cash flows, or simply where the lender has stopped and there is not much room to push further. In those situations, something more flexible can make it easier to keep the deal moving.
Most of the time it is not a clean comparison. Some deals need more weight behind them, others need more room while they play out, and that is usually what ends up driving the decision.
A Simple Example – How the Structure Plays Out
Consider a £10 million scheme. The main lender is in for roughly £6.5 million. That still leaves a gap to address, so the question is not whether the deal works – it is how you choose to fill what is missing.
One option is adding more debt. For example, £1.5 million at something like 13 to 15 percent. Over a year or so, you are probably looking at a couple of hundred thousand pounds by the time it is done. It sits there the whole time and gets cleared before anything comes back to you.
Using preferred equity instead shifts the dynamic. Same £1.5 million, but now you are looking at something like a mid-teens return plus a slice of profit. If the deal only just works, the gap between the two is not huge. If it performs well, that is when the difference starts to widen.
During the project, the preferred equity option can take some weight off. You are not working back from a fixed figure in quite the same way. But you do not know exactly where you land until the end, and that is the trade-off.
That is usually how developers think about it – not which one is cheaper, but what the deal is likely to do once it is underway.
Matching the Structure to the Deal
In the end it usually comes back to how the deal is likely to behave once you are actually in it. What looks straightforward at the start does not always feel the same a few months down the line.
Some projects are clean enough that adding more debt is not a problem. You carry the cost, clear it at the end, and move forward. Others do not run as neatly, and that is where having something less rigid in the structure can make a real difference.
There is no answer you can apply across every deal. It is a case of looking at what is in front of you and deciding what you are more comfortable managing while it plays out.
Frequently Asked Questions
Is mezzanine debt cheaper than preferred equity?
Most of the time mezzanine comes out lower in cost, but it is not always that clean once the deal plays out. With mezzanine you can usually see the cost building as you go, so there is less guesswork. Preferred equity is harder to pin down early on, because part of what the investor takes depends on how well things go, which can shift the outcome quite a bit by the time you exit.
Does preferred equity mean giving away ownership?
You are not always handing over legal ownership, but you are sharing the result. Even if you are still the one running the deal, the investor is entitled to a slice of the profit, so the better it performs, the more that gets split rather than kept by you.
Can mezzanine debt be used alongside bridging finance?
Yes, that combination comes up quite a lot on shorter-term deals. A bridging lender will usually cap out at a certain level, and if the numbers still need more to work, mezzanine is sometimes layered in behind it rather than bringing in equity.
Which option gives more control to the developer?
In most cases, mezzanine leaves you with more freedom while the deal is running. As long as things are broadly on track, the lender is not usually getting involved in day-to-day decisions. With preferred equity, there is often more visibility around key moments, especially where the outcome directly affects what they take out of the deal.
Which is riskier, mezzanine debt or preferred equity?
If the deal does not land how you expected, it is the equity that tends to feel it first. It sits at the bottom, so anything that knocks value gets absorbed there before it works its way up, whereas mezzanine still has something in front of it.
Can you use both mezzanine debt and preferred equity in the same deal?
You do see it occasionally, but it is not common on straightforward schemes. Once you start layering both in, the structure gets quite heavy, so it is usually reserved for deals where the size or complexity justifies it.
Does mezzanine debt affect how much you can borrow from a senior lender?
Sometimes it does, but it is not a fixed rule. Some lenders are comfortable with it sitting behind them, others are not, so it really depends who you are dealing with and how the deal looks as a whole once it is put together.
Is preferred equity only used on large development deals?
Not always, but you tend to see it more on bigger or less straightforward schemes. On smaller deals it can feel like overcomplicating things, whereas on larger ones it can give the structure more room to work.
Assessing costs and returns in a UK property finance structure.
Speak to a Commercial Finance Specialist
If you are working through a deal and trying to decide how to structure it, getting a second view at this stage usually helps. Small changes in how the stack is put together can have a bigger impact than most people expect once the deal is underway.
Commercial Finance Network is a whole-of-market FCA authorised broker working across development, investment and bridging transactions across the UK and internationally. If you want to run through a scenario or sense-check an approach, we can talk it through with you.
Call us on +44 1494 622 111 or email info@cfnuk.com to speak to a specialist directly.
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