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.

18,831 flats measured

Best £/sqft£/m² first

3 listings · £6.16/sqft£66.31/m² median in Chelsea

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.

2,238 sqft 208 m²

£3.73/sqft £40.15/m² 39% below Chelsea median
£8,350/mo £1,670 each (if split by room) was £8,500 ◷ relisted 1×

Cupar Road, Battersea SW11.

5 bed 4 bath Battersea

listed today avail now Share Agent's site ↗

1,655 sqft 154 m²

£4.83/sqft £51.99/m² 22% below Chelsea median
£8,000/mo £2,000 each (if split by room) ◷ relisted 1×

Onslow Square, South Kensington, SW7

4 bed 3 bath Brompton

listed today avail 31 Oct Share Agent's site ↗

316 sqft 29 m²

£7.27/sqft £78.25/m² 18% above Chelsea median
£2,297/mo ◷ relisted 1×

Nell Gwynn House, London

0 bed 1 bath Brompton

listed today avail 26 Oct Share Portal ↗

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.