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.

18,745 flats measured

Best £/sqft£/m² first

2 listings · £7.17/sqft£77.18/m² median in EC3

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

3,741 sqft 348 m²

£9.73/sqft £104.73/m² 36% above EC3 median
£36,400/mo £9,100 each (if split by room) ◷ 59 days on market

Lower Thames Street, London, EC3R

4 bed 4 bath Aldgate

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

3,800 sqft 353 m²

£12.54/sqft £134.98/m² 75% above EC3 median
£47,667/mo £11,917 each (if split by room) ◷ 59 days on market

Tower Bridge, Sugar Quay, Water Lane, London, EC3R

4 bed 5 bath Aldgate

59 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.