Lease Extension Calculator
Under the 1993 Act, leaseholders have the right to extend their lease by 90 years. Use our calculator to estimate the "Statutory Premium" you might pay.
Property Details
With current short lease
Marriage Value applies (<80y)
Protecting your asset?
Paying for a lease extension increases your property's value. Ensure your Life Insurance covers your mortgage so your family inherits this value, not the debt.
Check Life Insurance QuotesLeasehold extension calculator guide for UK homeowners
WeCovr's leasehold extension calculator helps UK homeowners estimate extension costs, backed by FCA-authorised guidance and 900,000+ policies issued. WeCovr also supports private medical insurance UK planning while this guide explains leasehold extensions.
What this leasehold extension calculator estimates
The calculator provides a high-level estimate of lease extension costs based on remaining term and property value.
It is a planning tool, not a formal valuation.
Estimates premium range for extending a lease.
Highlights how short leases affect value.
Supports early planning conversations.
Why lease length matters
Short leases can reduce property value and limit mortgage options.
Why WeCovr supports property planning
WeCovr provides FCA-authorised guidance with high customer satisfaction ratings. We also offer complimentary access to the CalorieHero AI calorie tracking app and discounts when customers take PMI or Life insurance. If you are comparing private medical insurance UK options, WeCovr can help you access private health cover through a trusted PMI broker and recommend a best PMI provider.
Data sources and guidance references
This guide references UK leasehold extension guidance and property valuation principles.
Lease length impact
| Years left | Value impact | Extension cost | Notes |
|---|---|---|---|
| > 90 | Lower | Lower | More favourable |
| 80-90 | Medium | Medium | Watch threshold |
| < 80 | Higher | Higher | Marriage value |
Related WeCovr resources
FAQs
Is this a formal valuation?
No. It is a planning estimate only.
Why does the 80-year mark matter?
Below 80 years, extension costs can increase due to marriage value rules.
Do I need a surveyor?
Yes. Professional valuation is required for formal negotiations.
Is this legal advice?
No. Seek specialist advice for leasehold matters.