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.

18,573 flats measured

Best £/sqft£/m² first

2 listings · £3.03/sqft£32.61/m² median in SW20

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

731 sqft 68 m²

£2.74/sqft £29.49/m² 10% below SW20 median
£2,000/mo £667 each (if split by room) was £2,150 ◷ relisted 1×

Kingston Road, SW20 8JP

3 bed 1 bath Merton Park

5 days on market avail now Share Agent's site ↗
Property photo
Floorplan

250 sqft 23 m²

£6.38/sqft £68.67/m² 111% above SW20 median
£1,595/mo was £1,650 ◷ relisted 1×

Bushey Road, Wimbledon Chase, SW20 8TE

0 bed 1 bath Merton Park

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.