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.

18,516 flats measured

Best £/sqft£/m² first

2 listings · £1.74/sqft£18.73/m² median in Blackbrook

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

2,584 sqft 240 m²

£1.64/sqft £17.65/m² 6% below Blackbrook median
£4,250/mo £1,063 each (if split by room) ◷ 2mo on market

St Georges Road, Bromley, BR1

4 bed 3 bath Blackbrook

2mo on market Share Portal ↗
Property photo
Floorplan

1,267 sqft 118 m²

£1.74/sqft £18.73/m²
£2,200/mo £1,100 each (if split by room) ◷ 2mo on market

Highlands, Bromley, BR1

2 bed 1 bath Blackbrook

2mo on market avail now Share Agent's site ↗

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.