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.

18,495 flats measured

Best £/sqft£/m² first

3 listings · £2.61/sqft£28.09/m² median in Harmondsworth

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

377 sqft 35 m²

£3.47/sqft £37.35/m² 33% above Harmondsworth median
£1,310/mo

Voyager House, Stanwell Road, Feltham, Hounslow

0 bed 1 bath Harmondsworth

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

366 sqft 34 m²

£3.54/sqft £38.10/m² 36% above Harmondsworth median
£1,295/mo

Bath Road, Harlington, UB3

1 bed 1 bath Harmondsworth

5 days on market avail 4 Nov Share Agent's site ↗
Property photo
Floorplan

610 sqft 57 m²

£3.61/sqft £38.86/m² 38% above Harmondsworth median
£2,200/mo £1,100 each (if split by room)

The Crescent, Hayes, Hillingdon

2 bed 1 bath Harmondsworth

4 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.