Everything you need to extend your lease

Extension.Lease delivers specialist lease extension valuation advice throughout the London Borough of Barnet, alongside expert guidance on freehold acquisition and collective enfranchisement. We act across High Barnet, Finchley, Hendon, Golders Green, Mill Hill, Colindale, Edgware, Totteridge, Whetstone and Friern Barnet, advising leaseholders in everything from Edwardian mansion flats and converted period properties to large-scale purpose-built developments and former council estates where many leases were first granted during the 1980s Right to Buy programme.
Barnet has several of London’s larger estate regeneration schemes. Grahame Park in Colindale is being rebuilt in stages, with Notting Hill Genesis delivering the early phases and the council bringing forward plans for the north-eastern part. West Hendon is being redeveloped by Barratt Metropolitan, and Dollis Valley in Chipping Barnet by Countryside with L&Q, while Brent Cross Town is creating a new district beside the North Circular. Leaseholders in older blocks within these schemes should check the redevelopment timetable before serving a notice.
In Golders Green, Hendon and Finchley, many flats sit in mansion blocks or 1930s purpose-built blocks where the residents have already bought the freehold through a company. If that applies to you, an extension can often be agreed within the building at modest cost. Where the freehold is held by an investor, and especially where there is a head lessee between you and the freeholder, the statutory route is usually the more reliable way to secure 90 extra years and remove the ground rent.
We handle lease extensions for flats in Kingsway Court, Beechwood Court, and Greenway Court, as well as ex-local authority stock in the East Finchley Estate and West Finchley Estate.
In Golders Green, we act on lease extensions for mansion blocks such as Green Court, Gresham Court, and Dunstan Court, alongside ex-local authority flats in the Childs Hill Estate.
Hendon lease extensions include apartments in The Hyde Court, Sentinel House, and ex-local authority blocks in the Grahame Park Estate and Watling Estate.
Our Colindale work covers modern developments such as Beaufort Park, Colindale Gardens, and Pulse Apartments, as well as ex-local authority stock in the Colindale Estate.
In Edgware, we handle lease extensions for flats in Parkside Court, Riverdene Court, and ex-local authority blocks in the Burnt Oak Estate and Edgware Estate.
Mill Hill lease extensions include flats in Millway Court, Lawrence Court, and conversions along Hale Lane, as well as ex-local authority stock in the Holders Hill Estate.
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Arrange a call with a surveyor about your Barnet lease extension or a freehold purchase with the other flat owners.
Flat values in Barnet range from the top end of the outer London market around Golders Green and Hampstead Garden Suburb to far more modest levels in Burnt Oak and Colindale. Because the premium is a share of value, where your flat sits in the borough has a direct effect on the figure, alongside the lease length and the ground rent.
The 1993 Act also lets your landlord recover its reasonable valuation and legal costs from you, and there is a Land Registry fee to pay. Our fee is fixed at £2,750 + VAT*, which includes the valuation, the negotiation and all legal work, payable in two equal instalments.
For a free estimate of the total cost, send us a few details about your flat and lease.
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.
Barnet Council owns its housing stock, which is managed on its behalf by Barnet Homes, part of The Barnet Group. Rather than bring the service in house, the council has kept this arrangement and approved a new ten year management agreement running from 2026. For a Right to Buy flat on a Barnet council estate, the freeholder is the London Borough of Barnet, even if every letter you receive carries the Barnet Homes name, and the Section 42 notice goes to the council as landlord.
Away from the council estates, most leasehold flats have private freeholders. Golders Green, Hendon and Finchley have many mansion blocks and 1930s purpose-built flats owned by property companies or resident-owned management companies, while Edwardian houses in Finchley and Mill Hill have often been divided into flats with a private freeholder. On regeneration estates such as West Hendon and Dollis Valley, new homes are owned by the developer partners and housing associations, so the landlord can be different from the one on an older lease nearby.
Everything you need to extend your lease









No. Barnet Homes manages council homes on behalf of the London Borough of Barnet, and the council has approved a new ten year management agreement from 2026, but the freehold belongs to the council. Your Section 42 notice must be served on the council as landlord.
Day to day, you may find that Barnet Homes staff deal with the claim on the council’s behalf. We check the title at HM Land Registry before anything is served, so the notice goes to the right party.
First, which part of the estate you are in. Grahame Park is being rebuilt in phases, with Notting Hill Genesis building the early phases and the council planning the north-eastern section, so some older blocks are due for demolition and others are not. The freeholder can also differ from block to block, and the title will show which.
If your block is in a later phase, extending may still pay. If a buy-back is close, it may not. We can look at the timetable and the numbers with you.
Usually more than one party. Where there is a head lessee between you and the freeholder, the 1993 Act identifies a competent landlord who conducts the claim, but the notice must also be given to the other landlords in the chain. Getting this wrong can delay or derail the claim.
Arcadia Law check the head lease and the titles before serving, and our surveyors take account of each landlord’s interest when they value and negotiate the premium.
Because the premium depends on the value of the flat. With the same lease length and ground rent, a flat worth £550,000 in Finchley will produce a much larger premium than one worth £325,000 in Burnt Oak, and once marriage value applies the gap grows further.
We value each flat on comparable sales in the same block or nearby streets, which is especially important in a borough where values vary as much as they do in Barnet.
Not for a long time, as a rule. New flats in Colindale are generally sold on long leases, so the term is unlikely to be a problem. The point to check is the ground rent. Leases granted from 30 June 2022 carry no ground rent for most new flats, but some earlier leases include rents that rise over time.
If yours does, a statutory extension would reduce it to a peppercorn and add 90 years. We can review the lease and tell you whether acting now is worthwhile.
Yes. Owning a share of the freehold does not lengthen your lease, and buyers and lenders look at the lease itself. A short lease still affects value and mortgage options, even in a building you jointly own.
The advantage is that the freehold owners can usually agree an extension between themselves by deed of variation, often for a nominal premium. Blakes can advise on fair terms and Arcadia Law can draft and register the deed.
Not long. Marriage value is added once the lease falls below 80 years, so you have around two years before the premium rises. Many Right to Buy leases granted in Barnet in the 1980s are now at about this point.
The valuation date is fixed when the Section 42 notice is served, so serving before the 80 year mark protects you even if negotiations with the council carry on after that.
Yes. A statutory extension reduces your ground rent to a peppercorn but leaves your service charges unchanged. Barnet Homes will carry on managing the block for the council and recovering your share of repairs, insurance and major works under the lease.
The extension changes the length of your lease and ends the ground rent. Everything else about your obligations as a leaseholder stays the same.