Leasehold Property law. Personally delivered.
Leasehold Property law. Personally delivered.
Calculators
An indicative aggregate premium for buying your building’s freehold together, built up flat by flat under Schedule 6 to the Leasehold Reform, Housing and Urban Development Act 1993. For qualification, the process and our fees, see Collective Enfranchisement.
A row for each participating flat. Only flats whose leaseholders are joining the claim — non-participants are left out, and the initial notice fixes the valuation date for the whole building.
The value of each flat with a long lease. Roughly what it would be worth with, say, 999 years remaining and no ground rent. Recent sale prices of similar flats nearby are a reasonable guide.
The unexpired term of each lease. The number of years left to run, taken from the lease itself or the title register.
The current ground rent for each flat. The annual figure payable now. Where a rent doubles or rises on a pattern rather than staying fixed, this calculator’s straight-line assumption will understate the premium — ask us and we will run the figures properly.
Calculated under Schedule 6 to the Leasehold Reform, Housing and Urban Development Act 1993
Add a row for each participating flat — only flats whose leaseholders are joining the claim count. The initial notice fixes the valuation date for the whole building.
| Flat | Value (long lease) | Unexpired term | Ground rent £pa |
|---|
Indicative price range
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Relativity is derived from a graduated relativity curve applying conventional assumptions and is calculated separately for each flat from its unexpired term. This is a simplified, non-binding estimate for guidance only — it does not account for onerous or unusual ground rent terms, development or hope value, non-participating flats, or comparable evidence specific to your building. For a figure you can rely on in a claim, get a formal valuation from an RICS Registered Valuer, such as our colleagues at Blakes Chartered Surveyors.
It applies conventional assumptions to a handful of numbers per flat. A formal valuation considers the actual building and the actual evidence, and matters most in these situations:
Where the landlord requires a lease granted back to them over a unit not let to a qualifying leaseholder, the group is not acquiring the full value of that unit and the premium falls. This calculator assumes no leaseback.
Flats left out of the claim are not priced by this tool at all. They attract hope value rather than marriage value, assessed separately by a valuer.
Roof space, airspace and undeveloped land can add substantially to a premium. This calculator does not attempt to estimate it.
Rents that double at short intervals or track RPI need their own calculation, and relativity — the single most contested figure in most claims — is applied here from a standard curve rather than evidence for your building.
Send us the address, how many flats there are and how many leaseholders are interested in joining, and we will tell you where you stand and what a claim is likely to cost. The first conversation is at no cost.
This calculator gives an indicative, non-binding estimate only and is not a valuation. Figures exclude the landlord’s costs, your own legal and valuation fees, disbursements and any leaseback or development value. Arcadia Law Ltd is a private limited company registered in England and Wales, company number 10043933, registered office 15 Approach Road, London SW20 8BA. Authorised and regulated by the Solicitors Regulation Authority, SRA number 629605. © Arcadia Law Ltd 2026.
