Free tools

Free property investment calculators

Four calculators for the numbers every UK deal appraisal needs. Each one explains its method, shows the pound figures behind every percentage, and links to the full guide on the topic. When you would rather not do this by hand for every listing, PropDetect runs the lot automatically and gives each deal a verdict.

  • Rental yield calculator

    Work out gross and net rental yield from purchase price, rent and running costs.

  • GDV calculator

    Estimate gross development value from comparable sales, with a price-per-sqft cross-check.

  • BRRR calculator

    Model buy, refurbish, rent, refinance: cash left in, cashflow and return on the money still in the deal.

  • Property ROI calculator

    Return on investment for a purchase and refurb, on a sale or a rental exit.

  • Refurb cost calculator

    Kitchen, bathroom, decorating, flooring and electrics priced by condition level and region, with the 15% contingency built in.