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 · £2.53/sqft£27.23/m² median in Lower Sydenham

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

774 sqft 72 m²

£2.45/sqft £26.37/m² 3% below Lower Sydenham median
£1,900/mo £950 each (if split by room)

Lawrie Park Road, Sydenham

2 bed ? bath Lower Sydenham

5 days on market avail 2 Nov Share Portal ↗
Property photo
Floorplan

750 sqft 70 m²

£2.53/sqft £27.23/m²
£1,900/mo £950 each (if split by room) ◷ relisted 1×

Sydenham Road, Sydenham

2 bed 1 bath Lower Sydenham

4 days on market Share Agent's site ↗
Property photo

size unknown

—/sqft/m²
£2,450/mo £613 each (if split by room)

Hazel Grove, London, SE26

4 bed 2 bath Lower Sydenham

4 days 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.