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.

18,531 flats measured

Best £/sqft£/m² first

2 listings · £10.10/sqft£108.72/m² median in W1K

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

533 sqft 50 m²

£6.91/sqft £74.38/m² 32% below W1K median
£3,683/mo ◷ relisted 2×

Avenfield House, Park Lane, Mayfair

1 bed 1 bath Marylebone

2 days on market avail now Share Portal ↗
Property photo
Floorplan

1,645 sqft 153 m²

£11.06/sqft £119.05/m²
£18,200/mo £9,100 each (if split by room) ◷ relisted 1×

Grosvenor Hill, Mayfair, London, W1K

2 bed 2 bath Chinatown

5 days on market avail now 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.