Ballpark Lease Extension Calculator
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Current Market Value

  • Is the property in prime, central London?

  • £

The value provided here should be current market value of the flat without a lease extension. If you are unsure, ask a trusted local estate agent, check out similar properties on Rightmove or see what similar properties in the area have sold for at (links open in new window).


Length of Lease

If the lease has less than 80 years remaining the increase in the value of your property caused by extending the lease must be shared 50:50 with the Freeholder. This is known as "Marriage Value".

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Ground Rent

  • £

This is the yearly rent paid to the Freeholder. Note that most leases will have graded Ground Rent that increases with time. Such graded Ground Rents can significantly increase the final valuation.