Lease Extension Calculator
This calculator will give you an estimate of the premium for a lease extension for a flat, but it cannot give you the actual costs. In considering the likely total cost you should also bear in mind the leaseholder's liability for the landlord's costs. The eventual cost of the new lease will be the premium plus both your own and the landlord's "reasonable" professional costs. These costs could be significant so be sure to get estimates from the professionals involved (likely to be at least solicitors and surveyors) before you decide to proceed.
This calculator is not suitable for use for a shared ownership lease.
You should not use this information in tribunal or court proceedings and neither should you take any other action based on this information without first getting professional advice. Although we offer an advice guide, Lease extension - Valuation about valuations under the Leasehold Reform, Housing and Urban Development Act 1993 (as amended), you should remember that the law and the way property is valued can change over time.
Please note that this calculator cannot do calculations for leases with less than 50 years remaining (40 years for flats in Central London).
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