Personal Guarantees in Development Finance: What You Sign and What It Exposes

What Is a Personal Guarantee in Development Finance?

A personal guarantee in development finance is a legal promise by a company director to repay the lender personally if the borrowing special purpose vehicle cannot. Most development loans are advanced to a limited company, usually a special purpose vehicle or SPV set up to hold a single scheme. That structure protects the developer's other assets, but lenders rarely lend to a thinly capitalised SPV on the strength of the property alone, and the personal guarantee is how they bridge that gap: it puts the individual behind the company on the hook for an agreed portion of the debt.

For most developers, the personal guarantee is the single most uncomfortable document in the finance pack. It reaches past the corporate veil and exposes personal wealth, in some cases the family home included, to the performance of a property development project. Yet a guarantee is close to universal in senior development finance, and refusing to sign one outright will rule out the majority of mainstream lenders. The sensible response is not to fear the guarantee but to understand exactly what you are signing, what it exposes, how far it really reaches, and how an equity partner can change the calculation entirely. Throughout, we assume you will take independent legal advice before signing, because in practice that is not optional.

What a Personal Guarantee Actually Covers

The most common misconception is that a personal guarantee exposes you to the full facility. In development finance it rarely does. On senior debt, the guarantee is typically capped at 20 to 25 percent of the facility, and the cap is stated as a figure in the guarantee document itself. On a two million pound loan, that means personal exposure of around four to five hundred thousand pounds, not the whole two million. The cap exists because the lender already holds a first charge over the site: the property is the primary security, and the guarantee is a top-up that covers the shortfall the lender fears most.

Beyond the headline cap, guarantees often carry specific carve-outs. The first is an interest shortfall guarantee, which makes you personally responsible for rolled-up interest if the scheme runs past its term and the sale proceeds do not cover it. The second is a cost overrun guarantee, under which you agree to fund any build costs above the approved budget from your own resources. Some lenders also add a bad boy guarantee, which only bites if you do something you should not, such as fraud, misrepresentation, or granting an unauthorised second charge. Read the guarantee alongside the facility letter, because the definitions matter: a guarantee capped at 25 percent of the facility is very different from one capped at 25 percent of amounts outstanding, and one that includes accrued interest and the lender enforcement costs can quietly exceed its headline figure. This is precisely the detail that independent legal advice is there to catch before you sign.

What Triggers a Personal Guarantee Call

A personal guarantee is not called simply because a project is late or difficult. It is called when the borrowing company defaults on the facility and the lender enforces its security, and the recovery from selling the property is not enough to clear the debt. In other words, the guarantee is a backstop for the lender downside, not a routine repayment mechanism.

The typical sequence runs like this. The SPV misses a milestone or breaches a covenant, the lender issues a default notice, and if the position cannot be remedied the lender appoints an LPA receiver or sells the asset. The property is sold, the senior debt is repaid first from the proceeds, and any mezzanine finance sitting behind it is repaid next if anything is left. If a shortfall remains after the security has been exhausted, the lender turns to the guarantor for the capped amount, and in the worst cases an unpaid call can lead to bankruptcy for a guarantor who cannot meet it. The guarantee therefore only bites at the very end of a chain that has already gone badly wrong. A guarantee is a bet on the downside of a scheme where the numbers stack up: a realistic gross development value, sensible loan to GDV and loan to cost ratios, a proper contingency, and a credible exit. The guarantees that ruin developers are almost always attached to deals that were marginal before anyone signed anything.

Joint and Several Liability With Co-Directors

If your scheme has more than one director or shareholder, the wording of the guarantee becomes critical. Most lenders require guarantees to be given on a joint and several basis, which means each guarantor is liable for the whole capped amount, not merely their share of it. If two directors each guarantee 25 percent of a facility on a joint and several basis, the lender can pursue either one of them for the entire capped sum and leave the guarantors to sort out contributions between themselves afterwards. That exposes you to your partner financial position as well as your own: if your co-director has fewer assets, or becomes bankrupt, or simply disappears, the lender will come to whoever can pay.

A contribution agreement between the guarantors, drawn up at the outset, sets out how any called amount is shared and gives you a contractual right to recover the excess from your partners. Better still, where you can, negotiate for several liability capped at your proportionate share, so that you guarantee only your own slice of the risk. Not every lender will agree, particularly where one partner is clearly the experienced party and the other is passive, but it is always worth asking. The difference between joint and several liability and proportionate several liability can be the difference between a manageable exposure and an effectively unlimited one.

Personal Guarantee Insurance: Cover, Price and Exclusions

Personal guarantee insurance exists, it is a real and regulated product, and for some developers it is worth the premium. Specialist insurers pay out to the guarantor, up to an agreed limit, if the guarantee is called. Cover usually starts at a percentage of the guaranteed amount in the first year and rises over time, so a policy might cover around 60 percent of the guaranteed sum in year one, increasing towards the full amount over subsequent years. Premiums are charged as an annual percentage of the covered amount, and for development finance, which is short-term and higher risk than ordinary business borrowing, they sit at the upper end of the range, so budget for a meaningful cost in the development appraisal.

The exclusions are where the detail lives. Most policies will not pay out where the guarantee is called because of fraud, misrepresentation, or a breach the director caused deliberately, which means the bad boy elements of a guarantee are usually uninsurable by design. Policies also commonly exclude guarantees given to connected parties and may require the underlying loan to meet certain criteria. Read the policy wording against the guarantee wording, because a policy that does not respond to the specific guarantee you have signed is an expensive comfort blanket and nothing more.

Negotiating the Cap and the Burn-Off

A personal guarantee is a negotiable document, not a standard form to be signed as presented, and the two most valuable things to negotiate are the cap and the burn-off. The cap is the maximum you can be pursued for, and pushing it from 25 percent towards 20 percent, or getting interest and enforcement costs brought inside the cap rather than sitting on top of it, directly reduces your exposure.

The burn-off, sometimes called a reducing guarantee, is arguably more powerful. It ties the guaranteed amount to the progress of the scheme, so that the guarantee reduces as construction milestones are hit or as units are sold and the loan is repaid. A guarantee that starts at 25 percent of the facility but burns down to nil once the scheme reaches practical completion exposes you only during the risky construction phase and releases you once the asset is substantially de-risked. Not every lender offers burn-off, but many will consider it for a credible borrower. You can also negotiate what sits behind the guarantee: more equity in the deal, which reduces the loan to cost ratio and the lender exposure; a charge over another property or a cash deposit held as additional security; or a corporate guarantee from a stronger parent entity. Every pound of extra equity or additional security you can offer is a pound of leverage in the conversation about how far the personal guarantee needs to reach.

How a JV Equity Partner Changes the Calculation

Personal Guarantees Across Your Funding Options

A personal guarantee is not unique to senior development finance. It attaches to most of the funding options a property developer uses, and the way it bites varies by product. On bridging loans, often used to acquire a site before planning is granted or to refinance at the end of a scheme, lenders usually take a personal guarantee alongside the first charge, though bridging guarantees are frequently lighter because the loan to value is lower. On mezzanine finance, which sits as a second charge behind the senior debt, the guarantee can be more demanding, because the mezzanine lender ranks behind the senior lender and has less property security to fall back on. The wider business finance market treats guarantees in much the same way: unsecured business loans, asset finance, and most commercial lending to a limited company will ask a director for a personal guarantee, because a lender advancing money to a company with limited liability wants a route past that limited liability if things go wrong.

It is worth knowing where regulation sits. Development finance and bridging loans advanced to a limited company for a genuine business purpose are generally not regulated by the Financial Conduct Authority, which means the consumer protections that apply to a residential mortgage do not apply to your facility or your guarantee. That makes the quality of your own advice all the more important. Where your exit is a sale, you repay the loans from the sale proceeds; where your exit is to hold and let the units, you repay by refinancing onto a buy-to-let mortgage. A clean exit on either route is the surest way to keep a personal guarantee from ever being tested.

Personal Guarantees in the Enfield Development Finance Market

Enfield is an active outer London property development market, and the size and shape of the schemes here shape the guarantees that come with them. Development finance across the borough typically runs from around five hundred thousand pounds to twenty-five million pounds, and with average residential values of about four hundred pounds per square foot (HM Land Registry Price Paid Data 2025), even a modest infill scheme of a handful of units quickly reaches a facility size where a lender will expect a personal guarantee.

The local planning environment works in a developer favour when it comes to the guarantee conversation. Enfield planning approval rate of around 76 percent (Local planning authority data 2025) gives lenders confidence that a well-prepared scheme will secure consent, which reduces the planning risk priced into a facility and strengthens your hand when negotiating the cap. Steady population growth of roughly 2.4 percent (ONS Mid-Year Population Estimates 2024) and continued regeneration around Meridian Water underpin the end-buyer and tenant demand on which the exit, and therefore the whole guarantee, ultimately rests. We arrange development finance for schemes across the borough, from Southgate and Winchmore Hill in the west to Edmonton, Ponders End and Brimsdown in the east, and part of our job is to make sure the personal guarantee attached to a facility is proportionate to the risk of the specific deal.

Why Independent Legal Advice Is Not Optional

Signing a personal guarantee without independent legal advice is one of the few genuine unforced errors in development finance. Many lenders now insist on it as a condition of the facility, requiring a certificate from a solicitor confirming that the guarantor understood the document and signed it freely, and even where a lender does not insist, you should treat legal advice as mandatory.

Practically, a solicitor who acts on development finance will spot the difference between a guarantee capped on the facility and one capped on amounts outstanding, will check whether interest and costs sit inside or outside the cap, and will flag joint and several liability and any absence of a burn-off. Legally, independent advice protects the guarantee enforceability in a way that also protects you, removing any later argument about undue influence or misunderstanding. A few hundred pounds of a solicitor time, set against a guarantee reaching into six figures, is the cheapest insurance in the whole transaction, so build it into your timeline and budget from the outset and never sign a guarantee under time pressure that you have not had properly explained.

Frequently Asked Questions

Does every development finance loan require a personal guarantee? No. Most senior debt facilities to a special purpose vehicle do, because the lender wants the individual behind the company on the hook for the shortfall. But guarantees are frequently capped, sometimes negotiable down to nil through burn-off, and some joint venture equity structures are arranged with no personal guarantee from the developer at all.

How much of the loan does a personal guarantee usually cover? In development finance the guarantee is typically capped at 20 to 25 percent of the facility, stated as a figure in the document. It is not usually the full loan amount, because the lender already holds a first charge over the property as its primary security.

Can I get personal guarantee insurance? Yes. Specialist insurers offer policies that pay the guarantor up to an agreed limit if the guarantee is called, usually covering a rising percentage of the guaranteed sum over the policy years. They carry meaningful premiums and important exclusions, notably for fraud and deliberate breaches, so read the policy wording against your actual guarantee.

What is a burn-off on a personal guarantee? A burn-off, or reducing guarantee, ties the guaranteed amount to the progress of the scheme so that it falls as milestones are hit or units are sold, often reaching nil at practical completion. It limits your exposure to the riskiest phase of the build, which makes it one of the most valuable terms to negotiate.

Should I take legal advice before signing? Always. Many lenders require independent legal advice as a condition, and even where they do not, a solicitor experienced in development finance will identify exposures in the wording that are easy to miss.

Data sources: HM Land Registry Price Paid Data 2025; ONS Mid-Year Population Estimates 2024; Local planning authority data 2025. This guide is general information, not legal or financial advice; always seek independent legal advice before signing a personal guarantee.