Everything you need to extend your lease

At Extension.Lease, we provide specialist lease extension valuations and freehold purchase advice across the London Borough of Richmond upon Thames. With extensive experience throughout Richmond, Twickenham, Teddington, East Sheen, Kew, Barnes, Whitton and Hampton, our valuations are supported by strong local transactional evidence – from riverside apartment developments along the Thames such as Richmond Bridge Mansions and Twickenham Riverside, to mansion blocks, purpose-built flats and converted period houses across the borough. We also regularly advise on ex-local authority estates where many leases were originally granted during the 1980s Right to Buy era, including the Ham Close Estate, the Mereway Estate and Edgar Road Estate in Twickenham, the Hospital Bridge Road Estate in Whitton, the Barnfield Estate in Richmond, and former council blocks around Castelnau in Barnes and North Sheen.
As the remaining term on your lease shortens, you will generally be entitled to a 90-year extension with your ground rent reduced to nil under the Leasehold Reform, Housing and Urban Development Act 1993. This statutory right is especially valuable once a lease nears 80 years unexpired, as marriage value is then triggered, often leading to a noticeable increase in the premium payable – a common issue for flats first sold under 1980s Right to Buy leases.
We regularly act for leaseholders of former council properties where Richmond Housing Partnership (RHP) is the freeholder. Blakes Chartered Surveyors prepare detailed, RICS-compliant valuations based on Richmond-specific market evidence, and negotiate robustly on your behalf, while Arcadia Law serve the Section 42 notice, negotiate the premium and complete registration at HM Land Registry. From initial advice through to completion, we manage the entire statutory lease extension process to secure the best possible outcome for your property.
We work on lease extensions for flats in riverside mansion blocks such as The Gateways, Heron Court, and Old Deer Park Gardens, as well as modern apartments in Kew Riverside and Richmond Bridge Estate. Ex-local authority stock includes parts of the Queens Road Estate and Pagoda Avenue area.
In Kew, we handle flats in developments like Kew Riverside Apartments and Emerald Square, plus period conversions on Kew Green. Ex-local authority schemes include High Park Estate and North Road Estate.
Our Twickenham work includes purpose-built flats in Twickenham House, Regency Court, and Twickenham Riverside, alongside ex-local authority estates like Heathfield Estate and Glebe Way Estate.
We carry out valuations for leaseholders in private blocks such as Thames Point, Bishops Court, and Church Road Court, as well as ex-local authority developments on Stanley Road Estate.
In Hampton, we handle smaller private developments like Hampton Court House Apartments and flats in converted period houses near Hampton Hill High Street, along with ex-local authority stock in Priory Road Estate.
Barnes lease extensions often involve period mansion blocks such as Riverview Gardens, Elm Bank Mansions, and riverside conversions along The Terrace. Leasehold flats here are premium assets, requiring precise valuation due to scarcity of comparables.
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The cost of extending your lease depends on several factors, including whether your property is under the ownership of Richmond 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 Richmond, 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.