Free property calculators

No signup, no email needed to get the answer. Each one shows its working, cites where the rates came from, and says plainly what it cannot know.

Stamp duty calculator

England, Wales and Northern Ireland. Second homes, buy-to-let and first-time buyers, with the band-by-band working shown.

Free · no signup

Refurbishment cost

A ballpark range per square metre for a light refresh, a full refurbishment or a back-to-brick job.

Free · no signup

BRRR calculator

Buy, refurbish, refinance, rent. How much of your money is still stuck in it, and what that money earns.

Free · no signup

HMO viability checker

How many rooms are actually lettable at the Housing Act minimums, and what that means for licensing and change of use.

Free · no signup

Why these are free

Because they are the easy half. A calculator can do arithmetic on numbers you already have — it cannot tell you what the refurbishment will actually cost, because it has never seen the building.

That is what RFPG does: one walk round a property on an ordinary phone, read room by room, priced from a rate book of 43 items across 13 trades with every rate carrying its published source and date.

All of these are estimates and decision-support — not a RICS Red Book valuation, not tax, legal or financial advice, and not a quotation.

RFPG — Reley Fast Property Guru, a product of Reley Fast Software Ltd, company number 16002149, registered in England and Wales and not authorised or regulated by the Financial Conduct Authority.