Property development relies on a handful of vital people. The site manager who keeps the build on track, the director managing the equity, and the lead who holds every banking relationship together. Lose one of them at the wrong moment and the consequences move fast. Projects stall, lenders get nervous and the whole business begins to unravel.
We see this risk ignored far too often during the initial funding stages. While everyone focuses on the build cost and the exit strategy, very few developers talk about what happens if the person running the show is no longer there. We have seen profitable schemes fail for exactly this reason. Not because the project was wrong, or the numbers did not stack up, but because there was no contingency for a human crisis.
The fix is remarkably simple but essential for anyone running a development business with partners or employees.
What key person insurance actually protects
There is a common misunderstanding that this cover is a perk for the individual. It is not. Key person insurance is a policy taken out by the business, for the business. If a vital member of your team dies or becomes critically ill, the payout goes directly into the company bank account.
This cash injection provides the breathing room to keep the site moving. It ensures you can pay contractors and keep the lights on while you figure out the next move. In a development context, this protection is the difference between a controlled transition and a total fire sale. Every JV structure should treat it as a baseline requirement from day one.
Calculating the sum assured for a build
Working out how much cover you need requires more than a guess. Look at the cold numbers of your specific project. We recommend three primary areas:
Lost profit: if a project is delayed by six months due to a loss of expertise, what does that do to your bottom line?
Loan repayment: many development facilities have personal guarantees or specific clauses that trigger if a director is lost.
Cost of replacement: finding a senior site manager or commercial director at short notice is expensive.
Take a hypothetical fifty-unit scheme in the middle of the second fix. If your lead developer is suddenly out of action, the interest on your bridge continues to tick every day. A payout that covers six months of interest and the salary of an interim manager keeps your profit margin intact.
The link to drawdown schedules
Your need for cover is not static throughout the life of a project. It typically peaks during the most intense parts of the build. Development finance drawdowns are often dependent on reaching specific milestones. If your site manager is the only one who can sign off on those stages or manage the relationship with the monitoring surveyor, your cash flow is at serious risk.
Lenders are increasingly aware of this. On larger deals, more banks ask for evidence of key person cover as a condition of the loan. They want to know that their capital is protected even if the person they have backed is no longer at the helm. Better to have the conversation during the application than to have a lender raise it as a last-minute hurdle.
Professionalising your structure
If you are working in a joint venture, this cover is even more vital. You owe a duty to your partners to ensure the project reaches its conclusion. Without insurance, the death of a partner can lead to legal battles with their estate or a complete freeze on the company's ability to trade.
Setting up this protection shows a level of professional maturity that attracts better partners and cheaper debt. It proves you are not just building houses; you are building a resilient business. Once a developer sees how affordable this cover is compared to the cost of a stalled site, it usually becomes a non-negotiable part of the toolkit.
Frequently asked questions
Is the premium tax deductible?
It depends on the specific purpose of the cover. If the policy is intended to replace lost profits, it is often treated as a business expense. We work with your accountant to ensure the policy is structured in the most tax-efficient way for your SPV.
Can we get cover for a site manager who isn't a director?
Yes. Anyone whose absence would cause a financial loss to the business can be insured. If your site manager holds all the technical knowledge and contractor relationships, they are a prime candidate for key person protection.
What happens to the policy when the project finishes?
You have options. You can take out a term policy that matches the length of the build, or keep the cover in place if you are moving straight onto the next scheme. We help you choose a structure that provides maximum flexibility for your development pipeline.
Last updated: 10 May 2026