GaffFinder

London lettings, by the square foot

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Every London flat, measured.

The portals won’t let you rank by size. We read the floorplans, so you can.

18,506 flats measured

Best £/sqft£/m² first

2 listings · £6.28/sqft£67.60/m² median in SW3

Sizes are estimates: an AI model reads most of them from the floorplan, and it can be wrong — so can the £/sqft£/m² worked out from them. Check with the agent before you rely on one.

Property photo
Floorplan

895 sqft 83 m²

£5.03/sqft £54.14/m² short let
£4,498/mo

Kings Road, London SW3

2 bed 2 bath Chelsea

listed today avail now Share Agent's site ↗
Property photo
Floorplan

1,959 sqft 182 m²

£12.50/sqft £134.55/m² 99% above SW3 median
£24,483/mo £8,161 each (if split by room)

Basil Street, London, SW3

3 bed 3 bath Belgravia

listed today avail now Share Agent's site ↗

How we know the size

  1. 01

    We collect

    Every new flat to rent in London, checked through the day, seven days a week.

  2. 02

    We read the floorplan

    A vision model reads the plan the way you would — room by room, taking the dimensions printed on it. It is an AI estimate, and it can be wrong.

  3. 03

    We measure

    That gives a square footage, and a price per square foot. You can sort and filter on both. The portal offers neither.