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.

18,540 flats measured

Best £/sqft£/m² first

2 listings · £3.87/sqft£41.66/m² median in SW4

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

455 sqft 42 m²

£3.68/sqft £39.61/m² 5% below SW4 median
£1,675/mo

Sandmere Road, London, SW4

1 bed 1 bath Brixton

listed today avail 16 Oct Share Portal ↗
Property photo
Floorplan

478 sqft 44 m²

£4.71/sqft £50.70/m² 22% above SW4 median
£2,250/mo

Bedford Road, Clapham North, SW4

1 bed 1 bath Clapham

listed today avail 19 Nov 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.