Everything you need to extend your lease

At extension.lease, we provide specialist lease extension valuations and freehold purchase advice across Merton. Our local insight — from Victorian mansion blocks in Wimbledon to ex-local authority estates in Mitcham — ensures valuations that are accurate, defendable, and rooted in real comparable evidence.
We handle lease extensions for properties in sought-after mansion blocks like Thornton House and Lakeview Court on The Downs, modern developments such as New Wimbledon Theatre Apartments on The Broadway, and ex-local authority schemes including Pelham Road Estate and Merton Hall Road. Riverside leaseholds near Wimbledon Park also form part of our portfolio.
Our Raynes Park work includes purpose-built flats along Grand Drive, 1930s maisonettes near Coombe Lane, and ex-local authority stock in Durham Road Estate. We also act on lease extensions for smaller private developments like Chapman Square on the Wimbledon Hill fringes.
In Morden, we cover lease extensions for flats in Central Gardens Estate, purpose-built blocks along London Road, and 1960s schemes near Morden Underground Station. Private developments such as Cavendish House and Kingswood Court are also common instruction points.
Mitcham lease extensions include ex-local authority estates like Phipps Bridge Estate and Eastfields Estate, plus 1930s maisonettes on Tamworth Lane. We also work on newer developments such as The Willows near Mitcham Eastfields Station.
We work on flats in modern riverside developments like Hardwicks Square and Britannia Point, as well as ex-council blocks off Christchurch Road and Fortescue Road. The Northern Line connection makes Colliers Wood popular with investors and first-time buyers alike.
South Wimbledon lease extensions range from ex-local authority flats on Merton High Street to private blocks like The Priory. We also cover maisonettes and conversions along Kingston Road and Morden Road.
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The cost of extending your lease depends on several factors, including whether your property is under the ownership of Merton Council or a private freeholder.
In addition to the premium and the landlords recoverable costs, you’ll also need to budget for our fixed professional fee of £2,750 + VAT*, which includes all valuation, negotiation, and legal work. This fee is split into two equal instalments, making the payment process straightforward and manageable.
Contact us for a free all inclusive estimate of the total cost of your lease extension, without obligation.
Extending your lease is one of the most important steps you can take to protect your property’s value and mortgageability. If your lease is under 100 years or has a high ground rent, its value may already be affected. Once it falls below 80 years, the cost of extending increases significantly due to marriage value.
Our free, instant Lease Extension Calculator gives you an instant estimate of the premium payable under the Leasehold Reform, Housing and Urban Development Act 1993. It’s a quick, useful guide for leaseholders wanting to understand the likely cost of extending their lease before taking formal advice.
We have a proven track record working with leaseholders in Merton, including properties under the ownership of the local authority and private freeholders. Whether you live in a purpose-built flat, a converted property, or a large housing development, we’ve handled it all
Everything you need to extend your lease



A statutory lease extension is a legal right that allows leaseholders to extend their lease by 90 years and remove any ground rent. This right is granted under the Leasehold Reform Housing and Urban Development Act 1993, and it applies to almost all leaseholders in the UK, whether your property is owned by a local authority or a private landlord.
The entire lease extension process typically takes between 6 to 12 months. This includes the valuation, notice serving, negotiations with the freeholder, and legal work to register the new lease. However, the exact time can vary depending on factors like the complexity of negotiations or if any issues arise with the property documents.
The premium is the price you pay to extend your lease. It depends on several factors:
Our surveyors will carry out a valuation to calculate a fair premium for your lease extension and negotiate where required to ensure you do not overpay.
If your lease has less than 80 years left, the cost of your lease extension will usually be higher. This is because properties with shorter leases are considered less valuable, and the cost to extend is affected by something called the marriage value, which is the increase in the property's value once the lease is extended. To avoid higher costs, it’s often best to act before your lease drops below 80 years.
Yes, your freeholder may charge fees for their involvement in the lease extension process. These fees typically cover the cost of legal work, including the drafting and registration of the new lease. While these fees are usually similar to the costs you incur, they can sometimes be higher depending on the freeholder's approach.