Everything you need to extend your lease

At Extension.Lease, we provide specialist lease extension valuations in the London Borough of Harrow together with expert advice on freehold purchase and collective enfranchisement across the borough, including Harrow-on-the-Hill, Wealdstone, South Harrow, Rayners Lane, Kenton, Stanmore, Pinner and Hatch End. We act for leaseholders across a broad range of property types, from mansion flats and period conversions around Harrow-on-the-Hill, to 1930s suburban maisonettes in Rayners Lane and Kenton, modern developments in Wealdstone, and a significant number of ex-local authority estates where leases were originally granted during the 1980s Right to Buy era.
Harrow has an unusually large number of maisonettes, often two flats in a single building that looks like a house from the street. Where each owner holds a share of the freehold, the lease can usually be extended by agreement between you, at little or no premium. Where an outside landlord owns the freehold, the statutory route applies. Problems tend to arise when the two leases have drifted apart in length, or when an informal extension years ago kept a ground rent in place, and both are worth sorting out before you sell.
Harrow Council is rebuilding the Grange Farm estate in South Harrow in phases, replacing its ageing Resiform blocks, and has said it will buy back leasehold flats at full market value, with compulsory purchase available if needed. Separately, the council is working with Wates on new homes at Poets Corner, the site of the old Civic Centre, and at Peel Road and Byron Quarter. These schemes affect few private leaseholders, but if your flat is on a council estate it is worth checking for plans affecting your block before you start.
We handle lease extensions for apartments in Cunningham Park Court, The Mount Apartments, and Harrow Mansions, as well as conversions along London Road. Ex-local authority stock includes the Cunningham Park Estate.
In Harrow Town Centre, we act on lease extensions for flats in Bradstowe House, Kings Court, and ex-local authority blocks within the Greenhill Estate.
Wealdstone lease extensions include ex-local authority flats on the Wealdstone Estate and Canning Road Estate, plus private developments such as Churchill Court and Hanover Court.
Our Kenton work covers flats in Kenwood Court, The Birches, and ex-local authority stock in the Belmont Estate.
In Pinner, we handle lease extensions for apartments in Elm Park Court, Marsworth House, and retirement developments such as Barons Court, along with ex-local authority flats on the Rayners Lane Estate.
Stanmore lease extensions include flats in Stanmore Place, Howard House, and ex-local authority stock in the Canons Estate.
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Get straightforward advice on your Harrow lease extension or freehold purchase from a chartered surveyor, starting with a free estimate.
Your premium turns on your flat’s value, the years left on the lease and the ground rent. In Harrow, the type of building matters as much as the postcode. A large flat in a Pinner or Stanmore block is likely to be worth far more than a one bedroom flat near Wealdstone, and the premium scales with value.
You also pay the landlord’s reasonable valuation and legal costs, which the 1993 Act lets them recover, and the Land Registry fee. Our fee is fixed at £2,750 + VAT*, it covers the valuation, the negotiation and all of the legal work, and it is paid in two equal instalments.
Ask us for a free estimate of the total cost of extending your Harrow lease, with no obligation to proceed.
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.
Harrow Council kept its housing rather than transferring it wholesale to a housing association, and it is a relatively small landlord by London standards, with around 4,800 homes and roughly 1,200 leasehold flats. If your flat was bought under Right to Buy on one of its estates, your Section 42 notice will normally go to the London Borough of Harrow. Some estates are different: the Rayners Lane estate, for example, passed from the council to Home Group after a tenant ballot and was later rebuilt, so leaseholders there deal with Home Group.
Most leasehold property in Harrow is privately owned, and much of it dates from the Metroland expansion of the 1930s. Purpose-built maisonettes in Kenton, North Harrow and Pinner often have an individual freeholder, or the freehold is shared between the upstairs and downstairs owners. Harrow-on-the-Hill and the town centre have older blocks and newer apartment buildings owned by investment companies, while Stanmore and Hatch End have 1960s and 1970s blocks that are frequently run by residents’ management companies. We confirm exactly who owns the freehold before advising on strategy.
Everything you need to extend your lease






Usually, yes. Harrow kept its housing rather than transferring it to a housing association, so most Right to Buy leaseholders on its estates have the council as freeholder. There are exceptions, such as the Rayners Lane estate, which transferred to Home Group, and some smaller groups of homes owned by other associations.
We always check the freehold title at HM Land Registry first, because a notice served on the wrong landlord is invalid.
Probably not without advice. Grange Farm is being demolished and rebuilt in phases, and the council has said it will buy back leasehold homes at full market value, with a home loss payment and disturbance costs on top, and that it may use a compulsory purchase order if needed.
Because the length of your lease affects the market value of your flat, extending can change your compensation. We can look at the timing of your phase and set out whether extending makes financial sense.
Not necessarily. As joint freeholders you can agree to extend each other’s leases by deed, often for a nominal premium. Many owners extend both leases at the same time so they match, which helps when either of you sells.
It is still worth having the terms checked. A lender may need to consent, and a buyer’s solicitor will look closely at how the deed was done. Blakes can advise on the terms and Arcadia Law can draft and register the deed.
The premium is linked to the value of the flat, so more valuable flats cost more to extend. With identical leases, a flat worth £500,000 in Pinner will produce a noticeably larger premium than one worth £320,000 in Wealdstone.
That is why we value each flat on evidence from its own area and building type. A 1930s maisonette, a modern town centre flat and a Stanmore block flat all need different comparables.
Yes. A lease extended informally is still a long lease, so you keep your statutory right to a further 90 years at a peppercorn ground rent. The new statutory lease would remove the remaining ground rent and any review clause.
The premium will reflect the length of the current term and the value of the ground rent the freeholder gives up. We can tell you what that is likely to be before you commit.
Yes. The 1993 Act lets the landlord recover its reasonable costs of valuing the flat and dealing with the legal work for the new lease, and the council normally instructs its own valuer and lawyers.
Those costs must be reasonable. We review what is claimed and challenge anything that looks out of line. Costs the landlord runs up in a First-tier Tribunal hearing are generally not recoverable from you in the same way.
Yes. Once the Section 42 notice is served, its benefit can be assigned to your buyer on completion, and the buyer carries the claim on from where it stands, keeping the valuation date your notice fixed.
This is common with short lease maisonettes, since many lenders will not lend where fewer than 80 or 85 years remain. Arcadia Law can prepare the assignment and liaise with your buyer’s solicitor.
Most cases take six to twelve months. The landlord has at least two months to serve its counter-notice, and the negotiation follows from there. If agreement is not possible, the First-tier Tribunal can decide, which adds time.
If both sides agree terms early, the process can be quicker. Registration at HM Land Registry follows completion, and it can be expedited if you are selling or remortgaging.