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How long does a lease extension take?

Four to twelve months depending on the freeholder. The statutory timetable imposes deadlines once the section 42 notice is served, which is one reason the formal route often beats informal negotiation.

Why does 80 years matter so much?

Below 80 years unexpired, the law adds marriage value to the premium: broadly half the uplift the extension creates, paid to the freeholder. Crossing that line can add thousands overnight, permanently.

Do you cover all of London?

Yes. We act on property throughout London and the wider Greater London area, and across England and Wales. Everything is handled online with a named consultant, so coverage is not limited by office location.

Lease extension in London

Property Law Online extends leases across London. If your lease is approaching 80 years unexpired, acting now is the single largest saving available to you as a leaseholder: below 80 years, marriage value makes the premium sharply and permanently more expensive.

Kerr

Conveyancer

London has one of the higher concentrations of leasehold flats in the country, which means lease length is a live issue for thousands of owners here. The 80-year threshold is the number that matters: below it, the premium includes marriage value and rises permanently.

If you have owned the flat for two years, you have a statutory right to a 90-year extension at a peppercorn ground rent. We check your qualification, manage the valuation, serve the notice and negotiate the premium.

London at a glance

Local authority: the relevant London borough council
Local search turnaround: 5 to 20 working days depending on the borough
Council tax (Band D, 2025/26): roughly £1,100 to £2,300 depending on the borough
Typical property price: around £525,000
Region: London

Figures are indicative and updated periodically. More about London's local authority

Lease extension in London: common questions

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