GaffFinder

London lettings, by the square foot

Saved Get alerts

Every London flat, measured.

The portals won’t let you rank by size. We read the floorplans, so you can.

18,525 flats measured

Best £/sqft£/m² first

3 listings · £3.19/sqft£34.34/m² median in Blackheath

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

1,064 sqft 99 m²

£4.23/sqft £45.53/m² 33% above Blackheath median
£4,500/mo £1,500 each (if split by room) ◷ relisted 1×

Blackheath Village SE3

3 bed 2 bath Blackheath

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

447 sqft 42 m²

£5.59/sqft £60.17/m² short let
£2,500/mo ◷ 58 days on market

Charlton Road, London, NW10 4

2 bed 1 bath Blackheath Royal Standard

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

size unknown

—/sqft/m²
£1,550/mo was £1,600 ◷ 54 days on market

St Josephs Vale

1 bed 1 bath Baizdon Road Estate

54 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.