Everything you need to extend your lease

At Extension.Lease, we provide specialist lease extension valuations in the London Borough of Brent together with expert advice on freehold purchase and collective enfranchisement across the borough, including Wembley, Willesden, Kilburn, Neasden, Harlesden, Kingsbury, Queens Park and Alperton. We act for leaseholders across a wide range of property types – from mansion flats and Victorian conversions in Queens Park and Kilburn, to 1930s suburban housing in Kingsbury, modern developments in Wembley Park, and ex-local authority estates where many leases were originally granted during the 1980s Right to Buy era.
Our experience includes properties on estates such as the Chalkhill Estate and Stonebridge Estate in Wembley; the St Raphael’s Estate in Neasden; the Church End Estate in Harlesden; the Windmill Court and Gladstone Park area blocks in Dollis Hill; the Kingsbury Green Estate; and the Barham Park and Tokyngton areas. We also regularly advise leaseholders across the South Kilburn regeneration zone, including blocks formerly and currently known as Hereford House, Winterleys, Carlton House, Exeter Court, Gloucester House, Durham Court, Cambridge Court and William Dunbar House. Many of these predominantly 1950s–1970s purpose-built local authority developments saw leases granted for 99 or 125 years during the 1980s, meaning a significant proportion are now approaching or falling below the critical 80-year unexpired term where marriage value becomes payable under the 1993 Act.
Our lease extension valuations in Brent are prepared with detailed analysis of lease length, ground rent provisions, relativity and marriage value to ensure statutory premiums are calculated accurately under the Leasehold Reform, Housing and Urban Development Act 1993. We prepare Section 42 valuation reports, advise on premium negotiation strategy and provide tribunal-ready advice where required, acting against private freeholders, housing associations and the London Borough of Brent. Every valuation is supported by robust, up-to-date comparable evidence drawn from across Wembley, South Kilburn, Willesden, Neasden and Kingsbury, ensuring premiums are accurate, defensible and fully reflective of local market conditions.
We handle lease extensions for flats in mansion blocks such as Shoot-Up Hill Court, Glenwood Court, and Brondesbury Mansions, as well as period conversions along Kilburn High Road and Willesden Lane. Ex-local authority stock includes the Kilburn Square Estate.
In Willesden Green, we act on flats in Griffin House, Ashford Court, and ex-local authority developments on the Pound Lane Estate and Cobbold Estate.
Wembley lease extensions include modern developments such as Alto Apartments, Emerald Gardens, and Quadrant Court, plus ex-local authority flats on the Chalkhill Estate.
Our Harlesden work covers Victorian conversions along Acton Lane and Harlesden Road, alongside ex-local authority estates such as Stonebridge Estate and Roundwood Estate.
In Neasden, we handle lease extensions for flats in Brook Road Court, Aboyne Road Court, and ex-local authority blocks in the Church End Estate.
Cricklewood lease extensions include flats in Mapesbury Court, Cedar Court, and ex-local authority stock in the Cricklewood Estate.
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The cost of extending your lease depends on several factors, including whether your property is under the ownership of Tower Hamlets 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 Brent, 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.