Wondering how much a lease extension costs? The answer depends on several factors, including your property's value, the number of years remaining on your lease, your ground rent and whether you extend your lease through the statutory or informal route.

Thinking about extending your lease but unsure what it might cost?

If you've been searching for a lease extension calculator, you're probably trying to understand how much it might cost to extend your lease.

An online lease extension calculator or lease extension cost calculator can provide a useful starting point for budgeting purposes. However, the true cost of a lease extension depends on several factors including the property's value with both its current lease length and after extension, ground rent, lease length and whether marriage value applies.

In this guide, I'll explain how lease extension costs are calculated, what information you'll need and why professional valuation advice remains essential.

You’re sorting through paperwork one afternoon. Then you find your lease. You glance at the first page…
For many leaseholders, lease length sits quietly in the background for years. It only resurfaces when prompted by a remortgage, a potential sale, or simple curiosity. But lease length is not just a date on a document.