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 Bexley. From established riverside apartment developments in Erith and Thamesmead West to purpose-built flats in Bexleyheath and Welling, period conversions in Sidcup and character properties in Old Bexley, our valuations are grounded in genuine local insight and supported by carefully analysed comparable evidence. We have extensive experience advising on ex-local authority estates where many leases were originally granted during the 1980s Right to Buy era, including the Lesnes Abbey Estate, Park Crescent Estate and West Street Estate in Erith; the Slade Green Estate and Howbury Park area; Thamesmead West estates around Yarnton Way, Alsike Road and Bentham Road; the Northumberland Heath Estate; the Belvedere Estate and Picardy Estate; the Longlands and Blackfen estates in Sidcup; the Burnt Oak Lane and Days Lane estates; the Brampton Road and Mayplace Road estates in Bexleyheath; and former council blocks around Crayford Way, Iron Mill Lane and Colyers Lane. Many of these 1960s–1980s purpose-built developments now have leases approaching key statutory thresholds.
We regularly advise leaseholders in Bexleyheath, Sidcup, Welling, Erith, Belvedere, Crayford, Slade Green, Blackfen and Old Bexley. The borough’s market ranges from Thames corridor apartment schemes to lower-rise suburban estate developments and 1970s–1980s purpose-built blocks, each requiring a valuation approach tailored to its location, tenure profile and market positioning. As leases approach or fall below 80 years unexpired, marriage value becomes payable under the Leasehold Reform, Housing and Urban Development Act 1993, often resulting in a noticeable increase in the premium – particularly for former Right to Buy flats – making early specialist advice financially important.
Bexley Council remains a significant freeholder of former local authority flats across the borough, and we have extensive experience negotiating statutory lease extensions in this context. Blakes Chartered Surveyors prepare detailed, RICS-compliant valuations based on Bexley-specific transactional data and relativity analysis, while Arcadia Law serve the Section 42 notice, negotiate the premium and complete registration at HM Land Registry. Our coordinated service ensures the statutory process is handled efficiently, strategically and with your financial interests fully protected.
We handle lease extensions for apartments in Bellegrove Court, The Croft, and Brook House, as well as ex-local authority stock in the Barnehurst Estate and Long Lane Estate.
In Sidcup, we work on flats in private developments such as Birkbeck Court, Trinity Place, and ex-local authority blocks in the Foots Cray Estate. Many instructions here involve low-rise 1960s and 1970s blocks.
Erith lease extensions include riverside developments like Ocean House, The Wharf, and Tower Road Apartments, along with ex-local authority estates such as Arthur Street Estate and Fraser Road Estate.
Our Welling work covers purpose-built flats in Rochester Court, Bellegrove Court, and ex-local authority stock within the Upper Wickham Lane Estate.
In Crayford, we handle lease extensions for flats in Valley House, Crayford Court, and ex-local authority blocks on the Crayford Estate.
Bexley Village lease extensions include flats in developments such as Bexley Court, Meadow View Court, and conversions in period properties close to the village centre.
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The cost of extending your lease depends on several factors, including whether your property is under the ownership of Bexley 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 Bexley, 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.