Collective Enfranchisement Calculator
A ball-park range for the price payable when leaseholders claim the freehold of a building collectively, from the freeholder’s side.
Calculated under Schedule 6 to the Leasehold Reform, Housing and Urban Development Act 1993
A ball-park range for the price payable on a collective claim. Add a row for each participating flat. The section 13 notice fixes the valuation date.
| Flat | Value (long lease) | Unexpired term | Ground rent £pa |
|---|
Indicative price range
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This is a ball-park figure only. A collective claim is materially more complex than an individual lease extension. This calculator does not account for development value, hope value or the reversion on non-participating flats, leaseback rights, ground rent review provisions, commercial parts, improvements, defective leases or head leases — any of which can change the figure substantially. It is not valuation advice. The opinion of a specialist RICS Registered Valuer should always be obtained.
What the calculator does not capture
A collective claim is materially more complex than an individual lease extension, and the omissions below can move the figure substantially in either direction.
Development value
Roof space, airspace, unused land, garages or conversion potential. On some buildings this is the single largest element of the price, and it is frequently the element a leaseholders’ valuer has not identified.
Non-participating flats
The freeholder retains a reversionary interest in flats whose leaseholders have not joined the claim. Hope value attaching to those reversions is not included here.
Leaseback rights
Where you are entitled to require leasebacks of non-participating flats, the price payable falls, sometimes considerably. Whether to take them is a commercial decision in its own right.
Ground rent reviews
Rent review provisions, whether fixed increases, doubling clauses or index-linked, change the capitalised value of the income stream. This calculator assumes a level rent.
Commercial parts and head leases
Non-residential floor space, intermediate interests and head leases all affect both qualification and valuation.
Improvements and defects
Leaseholder improvements are disregarded in the valuation. Defective leases and unusual terms cut the other way.
Dealing with an individual claim rather than a collective one? Use the statutory lease extension premium calculator. For the process and your obligations on a collective claim, see served with a Section 13 notice.
A collective claim needs a proper valuation
Send us the building address, the number of flats and how many are participating. We will test whether the claim qualifies, identify any development value and advise on leaseback rights before you respond.
Make an enquiry
A collective claim turns on development value, leaseback rights and matters no calculator can weigh. Send us the building address and the number of participating flats.

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