Informal vs Statutory Lease Extension Which Route Protects UK Buyers

When you buy a leasehold flat, you are not buying the building outright. You are buying the right to live there for a fixed number of years. Once that clock runs down, the property reverts to the freeholder. That is not some distant theoretical problem. It is a very real one that affects your mortgage, your resale value, and your peace of mind right now.

Most mortgage lenders want the lease to have at least seventy to eighty five years left at the end of the mortgage term. Below eighty years, things start getting expensive because a calculation called marriage value kicks in, which means you hand the freeholder a share of the uplift in value that a longer lease creates. Below sixty years, many lenders walk away entirely. So if your lease is ticking down, you need to act.

The good news is there are two routes available to most leaseholders in England and Wales. The informal route and the statutory route. They are not equally safe, and the right one for you depends on your circumstances.

The informal route is exactly what it sounds like. You approach your freeholder directly, negotiate a price and terms, and agree a new lease between yourselves without triggering any formal legal process. No notices, no tribunal, no statutory timetable.

The appeal is obvious. It can be faster. If your freeholder is cooperative and you have a good solicitor on both sides, you might wrap this up in a few months rather than the year or more that a statutory claim can take. There is also no formal application fee to pay upfront.

But here is the catch. Because you are negotiating outside the law, the freeholder holds most of the cards. They can offer you whatever terms they like. They might push for a higher premium than you would pay through the statutory route. They might insist on unfavourable ground rent terms, or try to introduce new clauses into the lease that were not there before. You have no automatic right to a ninety year extension on top of your existing term, which is what the statutory route gives you. You have no right to a peppercorn ground rent, either, though the Leasehold Reform (Ground Rent) Act 2022 has changed things for new leases.

Informal can work brilliantly when the freeholder is reasonable, the lease is not yet at a critical length, and you have a solicitor who knows leasehold law inside out. It can go badly when the freeholder is uncooperative, slow, or simply uses the lack of formal process to string you along.

Under the Leasehold Reform Housing and Urban Development Act 1993, most leaseholders of flats have a legal right to extend their lease by ninety years on top of whatever is left, and to reduce the ground rent to a peppercorn, meaning zero. This is not a favour from the freeholder. It is your right, provided you qualify.

To qualify, you generally need to have owned the flat for at least two years. The flat must be in England or Wales. There are some exemptions, including certain Crown and National Trust properties, but most residential leaseholders are covered.

You start the process by serving a formal document called a Section 42 notice on your freeholder. This sets out the premium you are proposing to pay. The freeholder then has two months to respond with a counter notice. From there, you negotiate, and if you cannot agree, either party can apply to the First Tier Tribunal to decide the premium. The whole process is governed by statute, which means the freeholder cannot simply refuse or drag things out indefinitely without consequences.

The statutory route also freezes the lease length at the point you serve your notice. So even if negotiations take a year, you are not losing ground on the clock while you wait. That matters a great deal if you are hovering near the eighty year mark.

Speed is the main argument for going informal. Statutory claims have a formal timetable and can take twelve to eighteen months, sometimes longer if the tribunal gets involved. If you are trying to sell quickly, that can feel like an eternity.

Cost is more complicated. Informal deals sometimes come in cheaper on professional fees because there is less formal process. But the premium itself, the amount you pay the freeholder for the extension, can be higher informally because you have no tribunal backstop. Statutory premiums are calculated using an established legal formula. Informal premiums are whatever the freeholder can persuade you to accept.

Protection is where the statutory route wins clearly. You get a guaranteed ninety year extension on top of your existing term. You get a peppercorn ground rent. You get a legal timetable the freeholder must respect. And crucially, you get the right to go to tribunal if you cannot agree. None of that exists on the informal route.

Lease terms are another area to watch. On an informal extension, a freeholder might try to introduce onerous clauses, new service charge provisions, or other changes to the lease wording. A good solicitor will push back, but you have no automatic protection. On the statutory route, the new lease must follow the existing terms, with only limited permitted changes.

If you are buying a flat with a short lease, the most important thing you can do before exchanging contracts is understand exactly which route is available to you and what it will cost. Your solicitor should be advising you on this before you commit.

As a first time buyer, you probably will not qualify for the statutory route immediately because you need to have owned the property for two years first. That means if you buy a flat with a short lease, you are either negotiating informally from day one, or you are waiting two years to serve a Section 42 notice. Some buyers negotiate an informal extension as part of the purchase, with the freeholder completing it before or shortly after completion. This can work, but get it in writing and make sure your solicitor scrutinises every clause.

If the lease has more than eighty years left, you have a bit of breathing room. You can buy, wait out your two years, and then serve a statutory notice. If the lease is below eighty years, act faster. Every month you delay on an informal deal is a month the freeholder can use to stall. And once you dip below eighty years, the marriage value calculation makes the premium significantly more expensive.

The honest answer is that the statutory route protects you better in almost every scenario. The informal route is a useful tool when the freeholder is cooperative and the terms are genuinely fair. But do not let a freeholder or an agent tell you informal is simpler and leave it at that. Simpler for whom is always the right question to ask.

Neither route is free, and it is worth being clear about what you are paying for.

The premium is the main cost, the money you pay the freeholder for the extended lease. This varies enormously depending on the current lease length, the property value, and the ground rent. There is no single figure that applies to everyone. Get a specialist leasehold valuer to give you an estimate before you proceed.

On top of the premium, you will pay your own solicitor's fees for the conveyancing work. On a statutory claim, you also pay the freeholder's reasonable legal and valuation costs, which is a quirk of the legislation. Those costs are supposed to be reasonable, and if they are not, you can challenge them, but budget for them nonetheless.

If the case goes to tribunal, there are tribunal fees and potentially increased legal costs on both sides. Most cases settle before tribunal, but not all.

A leasehold valuation surveyor is worth every penny here. They will tell you what a fair premium looks like, help you negotiate, and give you the evidence you need if things go to tribunal. Do not try to negotiate a lease extension premium without one.

Before you commit to either path, run through these steps.

1. 1Check how many years are left on the lease right now, and get the exact figure from the title register at HM Land Registry.
2. 2Find out whether you already qualify for the statutory route by checking your two year ownership requirement.
3. 3Instruct a specialist leasehold solicitor, not just any conveyancer, someone who does this regularly.
4. 4Get a leasehold valuation surveyor to estimate the premium under the statutory formula, so you have a benchmark for any informal negotiation.
5. 5Ask your solicitor to review the existing lease before any extension, so you know what terms you are working with and what the freeholder might try to change.
6. 6If the lease is approaching eighty years, serve your statutory notice as soon as you qualify rather than waiting to see if an informal deal emerges.
7. 7Never exchange contracts on a short lease property without a clear plan in writing for how the extension will be handled.