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.

18,816 flats measured

Best £/sqft£/m² first

2 listings · £3.10/sqft£33.37/m² median in SE27

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

842 sqft 78 m²

£3.09/sqft £33.26/m²
£2,600/mo £867 each (if split by room) was £2,900 ◷ 57 days on market

Lancaster Avenue, West Dulwich, London, SE27

3 bed 1 bath Tulse Hill

2mo on market avail 20 Oct Share Agent's site ↗
Property photo
Floorplan

205 sqft 19 m²

£5.12/sqft £55.11/m² 65% above SE27 median
£1,050/mo was £1,200 ◷ 39 days on market

Norwood High Street, LONDON, SE27 9HN

0 bed 1 bath Tulse Hill

39 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.