buying a freehold calculator

What “buying the freehold” means

Buying the freehold generally means acquiring the land interest from the freeholder so you are no longer just a leaseholder. In practical terms, this can give you stronger control over your property, reduce long-term uncertainty, and remove future ground rent obligations.

For some owners, this is mainly about protecting resale value. For others, it is about avoiding an expensive problem later—especially when the lease length starts dropping toward the 80-year threshold, where marriage value may become payable.

Why lease length matters so much

As the lease shortens, the market value of the leasehold interest can fall. Once the unexpired term is below 80 years, marriage value often becomes part of the premium calculation. That can make the price jump significantly compared with extending or buying the freehold earlier.

How this buying a freehold calculator works

This calculator combines four simplified components:

• Capitalised ground rent: a present-value estimate of future ground rent income.
• Reversion value: a discounted estimate of the freeholder’s future right to the property value.
• Marriage value: included when years remaining are below 80 (using a relativity-based estimate).
• Transaction costs: your fees, landlord’s recoverable costs, and an SDLT estimate on the premium.

Because surveyors and tribunals use detailed evidence and assumptions, this tool should be viewed as a planning number, not a legal valuation figure.

Key inputs explained

1) Property value

This should be your best estimate of current market value on a long lease or freehold equivalent basis. If this figure is too high or low, your estimated premium will move with it.

2) Ground rent

Ground rent directly affects the income stream value to the freeholder. Higher rent usually means a higher freehold premium.

3) Years remaining

Lease term is one of the biggest drivers. The closer you are to 80 years (or below), the more likely marriage value affects cost.

4) Deferment and capitalisation rates

These rates are valuation assumptions. Small changes can move the premium materially. If you have a surveyor’s suggested rates, use those instead of defaults.

5) Relativity

Relativity is the value of your leasehold interest as a percentage of full freehold/long-lease value. If you do not enter a figure, the calculator uses a basic stepped estimate based on lease length.

Typical costs beyond the premium

• Your solicitor and valuer fees.
• The freeholder’s reasonable legal/valuation costs (where applicable).
• Stamp Duty Land Tax depending on premium and current rules.
• Land Registry and administration charges.
• Potential negotiation or tribunal costs if terms are disputed.

Worked example (quick view)

Suppose your property value is £450,000, ground rent is £250, and there are 74 years left. Under common assumptions, marriage value may apply and push the premium noticeably higher than if the lease had remained above 80 years. In many real cases, that single factor is the largest reason owners decide to act sooner rather than later.

Important limitations

This page is for education and budgeting. It is not legal, tax, mortgage, or valuation advice. Enfranchisement rights and valuation rules can vary by property type, title structure, and jurisdiction. Always confirm numbers with a specialist valuer and solicitor before making decisions.