Tools

Property calculators

Six calculators we use in real conversations with buyers, sellers and landlords across London. They run entirely in your browser, so nothing you type is sent anywhere.

Instant valuation

An indicative value for your home in seconds, built from the real sold prices recorded near you by HM Land Registry.

Rent estimate

What your property could let for each month, from the ONS private rents series for your borough and property size.

Stamp duty calculator

Work out the SDLT due on an England or Northern Ireland purchase, band by band, including first-time buyer relief and the additional-property and non-resident surcharges.

Mortgage repayment calculator

Monthly repayment, total interest and a year-by-year amortisation summary for any loan amount, rate and term.

Affordability calculator

An indicative borrowing range from your income and deposit, and the purchase price it puts within reach.

Rental yield calculator

Gross and net yield on a London buy-to-let, with the income you actually keep once running costs and voids are deducted.

Buy to let stamp duty calculator

SDLT on an additional property including the 5% surcharge, plus the net yield once the tax is spread across your holding period.

Lease extension calculator

An indicative premium for extending a leasehold flat, from the years remaining, the value of the flat and the ground rent.