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.

18,429 flats measured

Best £/sqft£/m² first

7 listings · £5.55/sqft£59.74/m² median in SW1P

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.

1,177 sqft 109 m²

£3.99/sqft £42.95/m² 28% below SW1P median
£4,700/mo £1,567 each (if split by room) was £4,900 ◷ relisted 1×

Marsham Street, London

3 bed 3 bath Millbank

6 days on market avail now Share Agent's site ↗

492 sqft 46 m²

£4.40/sqft £47.36/m² 21% below SW1P median
£2,167/mo ◷ relisted 1×

Ambrosden Avenue, Westminster, London, SW1P

1 bed 1 bath Millbank

Also listed here £3,250 short let ↗

26 days on market Share Agent's site ↗

1,647 sqft 153 m²

£4.74/sqft £51.02/m² 15% below SW1P median
£7,800/mo £2,600 each (if split by room) ◷ relisted 1×

Abell House, John Islip Street, London, SW1P

3 bed 3 bath Grosvenor Estate

6 days on market avail now Share Portal ↗

1,278 sqft 119 m²

£4.89/sqft £52.64/m² 12% below SW1P median
£6,250/mo £2,083 each (if split by room) ◷ relisted 1×

8 Artillery Row, LONDON, SW1P

3 bed 3 bath Millbank

Also listed here £6,250 same price ↗

4 days on market avail now Share Agent's site ↗

308 sqft 29 m²

£5.83/sqft £62.75/m²
£1,795/mo ◷ relisted 1×

Udall Street, Westminster, London, SW1P

0 bed 1 bath Grosvenor Estate

20 days on market Share Agent's site ↗

991 sqft 92 m²

£6.56/sqft £70.61/m² 18% above SW1P median
£6,500/mo £3,250 each (if split by room) ◷ relisted 1×

Old Pye Street, London SW1P

2 bed 2 bath Millbank

26 days on market avail now Share Agent's site ↗

120 sqft 11 m²

£12.42/sqft £133.69/m² 124% above SW1P median
£1,490/mo ◷ relisted 1×

Udall Street London SW1P

0 bed ? bath Grosvenor Estate

16 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.