Estimate the cost of extending your leasehold and the impact on property value.
Estimated Premium
£70,000
New lease: 165 years
Marriage Value
£17,500
Capitalised Rent
£8,750
Solicitor
£2,000
Valuation
£750
Total Cost
£72,750
Value Uplift
£65,625
Extending a short lease is one of the most important financial decisions a leaseholder can make. A short lease reduces property value and can make it unmortgageable. This calculator provides a rough estimate; always get a professional valuation.
Property decisions are among the biggest financial commitments you will make. You may also find our Mortgage Calculator useful for related calculations.
For a broader view of your finances, try the Mortgage Overpayment Calculator or the Compound Interest Savings Calculator. All of our calculators are free to use and updated for the 2026/27 tax year where applicable.
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