Everything you need to extend your lease

At Extension.Lease, we provide specialist lease extension valuations in the London Borough of Hillingdon together with expert advice on freehold purchase and collective enfranchisement across the borough, including Uxbridge, Hayes, West Drayton, Yiewsley, Ruislip, Northwood, Eastcote, Ickenham and Hillingdon. We act for leaseholders across a wide range of property types, from suburban maisonettes and 1930s housing in Ruislip and Northwood, to town centre apartments in Uxbridge and Hayes, and a significant concentration of ex-local authority estates where leases were originally granted during the 1980s Right to Buy era.
The council is rebuilding two of its estates in Hayes: the Hayes Town Centre estate around Austin Road and the Avondale Drive estate, working with Higgins Partnerships. Between them the two estates had more than 100 leasehold homes, and the council has used compulsory purchase orders to secure the remaining interests. If you own a flat close to either site, or on another older council estate in the south of the borough, ask whether there are plans for your block before you extend, because a buyback changes the sums.
Ruislip Manor, Eastcote and Northwood Hills grew up around their stations in the 1930s, and their parades have many flats above shops. These are often let on shorter leases by a commercial freeholder who also owns the shop units, and the leases can include rent reviews or repairing obligations that worry lenders. A statutory extension adds 90 years and removes the ground rent, although most of the other lease terms stay the same. We read the whole lease, not just its length, before advising you on the best way forward.
We handle lease extensions for apartments in Randall Close, Kings Mill Way, and Packet Boat House, as well as ex-local authority stock in the Brunel Estate and Cowley Estate.
In Hayes, we act on flats in modern developments such as High Point Village, Clayton Court, and Venus House, alongside ex-local authority estates like Yeading Lane Estate and Hayes Town Estate.
Ruislip lease extensions include apartments in Cedar Court, King’s Lodge, and ex-local authority flats in the South Ruislip Estate.
Our West Drayton work covers riverside developments such as Drayton Garden Village, Waterside Park, and ex-local authority stock on the Porters Way Estate.
In Northwood, we handle lease extensions for properties in Savoy Court, Dene Court, and retirement flats like Hallowell Court, plus ex-local authority stock in the Northwood Hills Estate.
Yiewsley lease extensions include ex-local authority blocks in the Yiewsley Estate, as well as private developments such as Mulberry Court and The Elms.
📞 020 7388 0000
Call us to discuss your Hillingdon lease extension or freehold purchase with a chartered surveyor, or ask for a free estimate first.
Three numbers decide the premium: what your flat would be worth on a long lease, the years left to run and the ground rent. Hillingdon is a large borough with a wide range of values. A two bedroom flat in Northwood or Ruislip will usually be worth more than a similar one in Hayes or Yiewsley, and the premium is higher as a result.
You will also need to pay your landlord’s reasonable valuation and legal costs, which the 1993 Act allows them to recover, and the Land Registry fee. Our own charge is fixed at £2,750 + VAT*, which covers the valuation, the negotiation and all of the legal work, paid in two equal instalments.
Ask us for a free estimate, and we will set out the likely cost of extending your Hillingdon lease in full.
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.
Hillingdon Council has kept ownership of its housing. For several years it was managed by an arm’s length company, Hillingdon Homes, until the council decided in 2010 to bring the service back in house. If you own a former council flat in Hayes, West Drayton, Yiewsley or Uxbridge, the London Borough of Hillingdon is very likely your freeholder, and that is where your Section 42 notice will be served.
In the north of the borough the picture is mostly private. Ruislip, Eastcote and Northwood have 1930s parades with flats above shops, purpose-built maisonettes and later blocks owned by individuals, investment companies or residents’ management companies. Uxbridge and Hayes have a growing number of new apartment developments, many near the Elizabeth line at Hayes and Harlington and West Drayton, where the freehold is often held by a developer or ground rent investor. We confirm who owns your freehold at HM Land Registry before anything is served.
Everything you need to extend your lease






Yes, in most cases. Hillingdon Homes only managed the council’s housing. It never owned it, so when the council brought management back in house the freehold stayed exactly where it was.
For a former council flat, the London Borough of Hillingdon is therefore almost always the freeholder, and that is who receives your Section 42 notice. We check the title at HM Land Registry before serving to make sure.
If your flat is outside the two estates being rebuilt, the regeneration should not affect your right to extend, although new homes nearby may help local values over time.
If your flat is within one of them, the council has been acquiring the remaining leasehold interests, using compulsory purchase where needed. Compensation is based on market value, which depends partly on lease length, so speak to us before serving any notice.
Because the premium tracks the value of the flat. If the lease length and ground rent are the same, a flat worth £475,000 in Northwood will produce a larger premium than one worth £300,000 in Hayes.
Northwood and Ruislip leases are also more likely to be private 99 year leases than council 125 year leases, so they can be shorter, which adds marriage value. We value each flat against sales in its own area.
Yes. The right to a lease extension belongs to any qualifying leaseholder of a flat on a long lease, and flats above shops are included. The limit on commercial space only matters if the flat owners want to buy the freehold of the building together.
The freeholder of a parade is often a commercial investor. We look at the full lease, including any repair and insurance clauses, so you know what the new lease will and will not change.
A 125 year lease granted in 1988 has around 87 years left today and will drop below 80 years in the early 2030s. At that point marriage value is added to the premium, and the cost can rise sharply.
The valuation date is fixed when the Section 42 notice is served, so serving while you are still above 80 years protects you, even if the negotiation finishes later. Leave enough time for the valuation and paperwork.
Yes. The 1993 Act allows the landlord to recover its reasonable valuation and legal costs from the leaseholder, and the council will normally appoint its own valuer and use its own lawyers.
Those costs must be reasonable and must relate to the lease extension itself. We review what is claimed and challenge anything that looks excessive. The landlord’s costs of a tribunal hearing are generally not recoverable from you in the same way.
Yes. Once the Section 42 notice has been served, its benefit can be assigned to your buyer on completion. The buyer then continues the claim, keeping the valuation date your notice has already fixed.
This is a common approach for short leases, because many lenders will not lend where fewer than 80 or 85 years remain. Arcadia Law can deal with the assignment and answer your buyer’s solicitor’s questions.
No. The two year ownership rule was abolished on 31 January 2025 by the Leasehold and Freehold Reform Act 2024, so you can start the statutory process straight after completing your purchase.
If you bought a flat with a lease close to 80 years, serving a notice early can fix the valuation date before marriage value applies. If the seller had already served a notice, ask whether its benefit was assigned to you, as it can save time and money.