Estimate the Cost to Buy Your Freehold
Use this buy freehold calculator to get a quick, educational estimate for leasehold enfranchisement costs.
How this buy freehold calculator works
This tool gives a practical estimate of what you might pay to buy your freehold interest. It is designed for quick planning and early-stage budgeting, especially if you are comparing options like buying the freehold now versus extending the lease first.
The estimate is built from three standard valuation ideas used in enfranchisement discussions:
- Term value: the present value of ground rent income the freeholder would lose.
- Reversion value: the value today of getting the property back at lease expiry.
- Marriage value: potential additional value created when lease and freehold interests are combined (often relevant below 80 years).
Inputs explained in plain English
1) Property value
Enter what the property would likely be worth with a long lease or freehold equivalent. If you only have a current leasehold value, you can still use it, but results may be less accurate.
2) Ground rent
This is your current yearly ground rent. If your lease has an escalating rent clause (for example, doubling every 10 years), this simple calculator will not fully model that pattern.
3) Years remaining
This has a major effect. As years drop, the reversion value rises and marriage value may become relevant, often increasing the premium.
4) Capitalisation and deferment rates
These are valuation rates used to discount future value back to today. Small changes in these percentages can create big changes in your estimate.
5) Relativity (optional)
If you know a relativity from professional advice or local evidence, enter it here. If you leave it blank, the calculator uses a simple built-in estimate based on lease length.
Important rule of thumb: the 80-year threshold
In many cases, once the lease falls below 80 years, marriage value can apply and costs can jump. That is why many owners act before this point. This buy freehold calculator highlights that effect to help with timing decisions.
Example scenario
Suppose your flat has a long-lease equivalent value of £350,000, ground rent of £250, and 72 years left. You may see a result where:
- term value is modest,
- reversion value is significant,
- marriage value appears because the term is under 80 years.
Then you add legal and valuation costs to arrive at a more realistic total budget figure.
What this calculator does not replace
For an actual transaction, you still need qualified legal and valuation advice. A surveyor familiar with enfranchisement can adjust assumptions for local comparables, lease terms, and tribunal precedents. A solicitor can also check eligibility and statutory process requirements.
Freehold purchase planning checklist
- Confirm exact lease length from official documents.
- Review ground rent pattern (fixed or escalating).
- Get a market valuation and enfranchisement valuation opinion.
- Budget for both premium and professional fees.
- Compare informal deal vs statutory route with your adviser.
- Take action early if near key lease thresholds.
Final thoughts
A buy freehold calculator is best used as a decision-support tool, not a final quote. It helps you understand which variables drive cost and when acting sooner may save money. Use it to prepare, then validate with professionals before making legal commitments.