This calculator is a tool to calculate a rough estimate of what would be the premium payable to purchase your freehold (of a house) or extend your lease.  This is NOT a valuation.  To get an estimate, input your unexpired term, existing lease value (unextended), current ground rent and choose the calculation type.

VERY IMPORTANT NOTE:

THIS CALCULATOR IS A HELPFUL TOOL BUT CANNOT BE TREATED AS PROPERLY ACCURATE.

YOU MUST NOT USE THESE FIGURES FOR ANY NOTICE YOU SERVE.

WE CANNOT BE LIABLE FOR ANY LOSS DIRECT, CONSEQUENTIAL OR OTHERWISE.