Statutory Lease Extension UK - How the Formal Process Works

A statutory lease extension gives qualifying leaseholders a legal right to extend the lease on their flat rather than relying entirely on negotiation with the freeholder. The formal process is governed by the Leasehold Reform, Housing and Urban Development Act 1993.

For qualifying flats, the current statutory route generally adds 90 years to the existing lease and reduces the ground rent to a peppercorn, meaning effectively zero financial ground rent.

Who Can Apply for a Statutory Lease Extension?

The statutory process generally applies to qualifying leaseholders of flats held on long leases.

A long lease usually means the original lease was granted for more than 21 years. Importantly, this refers to the original length of the lease rather than the number of years remaining today.

Since 31 January 2025, the previous two-year ownership requirement has been removed. A qualifying leaseholder can therefore generally begin the statutory extension process once they are the registered owner.

Certain properties and leases can fall outside the normal rules, so eligibility should be checked before starting the formal process.

How Does the Statutory Lease Extension Process Work?

The process involves several important legal stages.

1. Check Your Lease

Start by establishing:

• Exact lease length

• Remaining years

• Ground rent

• Ground rent review provisions

• Freeholder details

• Any intermediate landlords

• Your Land Registry ownership details

The remaining lease term is particularly important because it can have a significant effect on the premium.

2. Get a Lease Extension Valuation

A specialist valuation surveyor can estimate the likely premium payable to the freeholder.

The valuation can consider the property's value, remaining lease term, ground rent and other factors prescribed by the statutory valuation framework.

If the lease has 80 years or less remaining, marriage value can currently increase the premium.

3. Instruct a Specialist Solicitor

A lease extension solicitor can prepare the statutory notice, identify the correct landlord and deal with the legal deadlines.

Because serving the wrong notice or missing an important deadline can cause serious problems, professional advice is strongly recommended before starting the process.

4. Serve the Section 42 Notice

The formal statutory process begins when the leaseholder serves a Section 42 tenant's notice on the competent landlord.

The notice normally includes details such as the flat, the lease, the proposed premium and the date by which the landlord must respond.

Serving the notice also fixes the valuation date, meaning certain factors used to calculate the premium are assessed at the date the notice is served.

5. Receive the Landlord's Counter-Notice

The landlord must respond with a counter-notice by the date specified in the Section 42 notice.

The landlord may accept the claim but propose different terms or a different premium.

If the landlord disputes your right to extend, there are specific legal procedures for resolving that issue.

6. Negotiate the Premium

In many cases, the main disagreement concerns the premium.

Your valuer can negotiate with the freeholder's valuer while your solicitor deals with the legal aspects of the transaction.

If agreement cannot be reached, either side may be able to apply to the relevant tribunal within the statutory timeframe.

7. Complete the New Lease

Once the premium and terms have been agreed, the legal documentation can be completed.

The extended lease should then be registered where required, giving the leaseholder the benefit of the additional term.

How Much Does a Statutory Lease Extension Cost?

There is no standard UK price.

The main financial components can include:

• Lease extension premium

• Your valuation fees

• Your solicitor's fees

• The freeholder's reasonable legal and valuation costs under the current rules

• Land Registry fees

• Tribunal-related costs if the matter becomes disputed

The premium is normally the largest expense and can vary substantially between properties.

A high-value London flat with 70 years remaining could have a very different premium from a lower-value flat with 95 years remaining.

What Happens If the Lease Has Less Than 80 Years?

This is an important consideration under the current statutory system.

Where a qualifying flat has 80 years or less remaining, marriage value can form part of the premium. This can make extending the lease considerably more expensive.

However, major reforms are being developed that are intended to remove marriage value and change how lease extensions are calculated.

As of September 2026, these reforms are not all in force. Proposed changes include extending statutory leases to 990 years, removing marriage value and changing how lease extension costs are calculated.

Should You Extend Now or Wait?

There is no universal answer.

If your lease is comfortably above 80 years, the current process may be relatively straightforward compared with a very short lease.

If your lease is already below 80 years, you may be considering whether to proceed now or wait for future reforms. The potential financial benefit of waiting needs to be balanced against property value, mortgageability, sale plans and the uncertainty around when the reforms will actually take effect.

A professional valuation can help you make a more informed decision.

Can You Sell a Flat During a Statutory Lease Extension?

Yes, but the transaction needs careful handling.

A leaseholder may sell while a statutory extension is progressing, and in certain circumstances the benefit of the claim can be transferred to the buyer.

This can be particularly useful where a seller has already started the formal process but does not want to wait for the entire extension to finish before selling.

The conveyancing arrangements should be handled by solicitors familiar with statutory lease extensions.

Statutory vs Informal Lease Extension

The main difference is that the statutory route gives a qualifying leaseholder a legal right to an extension.

With an informal extension, the freeholder can negotiate different terms, including the length of the extension and ground rent.

The informal route may sometimes be quicker, but it does not provide the same statutory protections.

Before accepting an informal offer, compare it carefully against what you could obtain through the statutory process.

How Fraser Bond Can Help

Fraser Bond can assist leaseholders, buyers, sellers and property investors in understanding the commercial implications of statutory lease extensions.

Whether you are dealing with a short lease, preparing to sell a flat, assessing a leasehold investment or considering whether to extend now or wait for reforms, understanding the lease term and potential premium is essential.

Getting the right valuation and legal advice at the beginning can help prevent costly mistakes later in the process.