Everything you need to extend your lease

Extension.Lease provides specialist lease extension valuation advice across the London Borough of Haringey, together with strategic guidance on freehold acquisition and collective enfranchisement. We act for leaseholders throughout Crouch End, Muswell Hill, Highgate, Tottenham, Wood Green, Hornsey, Harringay, Bounds Green and Seven Sisters, advising on properties ranging from period mansion flats and Victorian conversions to post-war purpose-built blocks and substantial former council estates where many leases were originally granted during the 1980s Right to Buy era.
A significant proportion of Haringey’s leasehold estate stock was constructed between the 1950s and 1970s, with 99- and 125-year leases commonly issued in the 1980s following Right to Buy disposals. We regularly advise on properties within estates such as the Broadwater Farm Estate, Northumberland Park Estate, Ferry Lane Estate and White Hart Lane Estate in Tottenham; the Love Lane Estate (earlier phases) and High Road West area; the Campsbourne Estate and New River Village vicinity in Hornsey; the Noel Park Estate and Caxton Road blocks in Wood Green; the Highgate New Town Estate; the Roundway Estate; the Bounds Green Estate; the Cranwood Estate near Muswell Hill; the Tiverton Road and Turnpike Lane blocks; the Clyde Road Estate; the Coldfall Estate; the Tower Gardens Estate; the Seven Sisters Estate; and the Harringay Green Lanes and St Ann’s Road local authority blocks. Many of these predominantly low- to mid-rise purpose-built developments are now approaching, or have fallen below, the critical 80-year unexpired lease threshold where marriage value becomes payable under the Leasehold Reform, Housing and Urban Development Act 1993.
Lease extension valuation in Haringey requires careful calibration between prime residential pockets such as Highgate and Muswell Hill, strong family markets in Crouch End and Bounds Green, and regeneration-driven zones in Tottenham Hale, Wood Green and Northumberland Park. Our methodology involves detailed examination of lease term, historic ground rent provisions, relativity evidence, deferment rates and marriage value to ensure statutory premiums are calculated precisely and defensibly.
We prepare comprehensive Section 42 valuation reports, advise on premium negotiation strategy and provide tribunal-ready expert evidence where necessary, acting against private freeholders, housing associations and the London Borough of Haringey. Each valuation is supported by carefully analysed, up-to-date comparable evidence drawn from across the borough’s varied micro-markets, ensuring premiums are robust, commercially realistic and fully reflective of prevailing local values.
We handle lease extensions for flats in mansion blocks such as Muswell Hill Mansions, Queen’s Mansions, and Grand Avenue Mansions, as well as period conversions along Colney Hatch Lane and Muswell Hill Road.
In Crouch End, we act on flats in Crescent Mansions, Rosebery Court, and ex-local authority blocks in the Hornsey Lane Estate. Period conversions along Crouch Hill and Park Road are also common instructions.
Tottenham lease extensions include ex-local authority developments such as the Broadwater Farm Estate, Northumberland Park Estate, and Love Lane Estate, along with private flats in newer schemes like Lawrence Square.
Our Hornsey work covers mansion blocks like Warner House, modern developments such as Smithfield Square, and ex-local authority stock within the Priory Estate.
In Wood Green, we handle lease extensions for flats in Sandringham Court, Noel Park Mansions, and ex-local authority estates such as Sky City Estate and Noel Park Estate.
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The cost of extending your lease depends on several factors, including whether your property is under the ownership of Haringey 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 Haringey, 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.