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.

18,500 flats measured

Best £/sqft£/m² first

15 listings · £4.78/sqft£51.45/m² median in Belsize Park

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.

1,425 sqft 132 m²

£3.33/sqft £35.84/m² 30% below Belsize Park median
£4,750/mo £1,583 each (if split by room) ◷ relisted 1×

Belsize Avenue, London, NW3

3 bed 2 bath Belsize Park

7 days on market avail 3 Oct Share Agent's site ↗

1,160 sqft 108 m²

£4.48/sqft £48.22/m² 6% below Belsize Park median
£5,200/mo £1,733 each (if split by room) was £5,750 ◷ relisted 2×

Fitzjohn's Avenue, Hampstead, London, NW3

3 bed 2 bath Belsize Park

12 days on market avail now Share Portal ↗

1,127 sqft 105 m²

£4.61/sqft £49.62/m² 4% below Belsize Park median
£5,200/mo £1,733 each (if split by room) ◷ relisted 1×

Boydell Court, St John's Wood Park, St John's Wood, London, NW8

3 bed 3 bath Belsize Park

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

1,115 sqft 104 m²

£4.66/sqft £50.16/m²
£5,200/mo £1,733 each (if split by room) was £5,633 ◷ relisted 1×

St. Johns Wood Park

3 bed 3 bath Belsize Park

4 days on market Share Agent's site ↗

1,044 sqft 97 m²

£4.98/sqft £53.60/m²
£5,200/mo £1,733 each (if split by room) was £5,997 ◷ relisted 3×

Fitzjohns Avenue, Hampstead

3 bed 2 bath Belsize Park

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

1,065 sqft 99 m²

£5.29/sqft £56.94/m²
£5,633/mo £1,878 each (if split by room) ◷ relisted 1×

Boydell court,St. Johns Wood Park London, london

3 bed 3 bath Belsize Park

21 days on market avail now Share Portal ↗

1,062 sqft 99 m²

£5.30/sqft £57.05/m²
£5,633/mo £1,878 each (if split by room) ◷ relisted 1×

St. Johns Wood Park, St Johns Wood, London, NW8

3 bed 2 bath Belsize Park

14 days on market avail 30 Sep Share Agent's site ↗

976 sqft 91 m²

£5.33/sqft £57.37/m²
£5,200/mo £2,600 each (if split by room) ◷ relisted 1×

Fitzjohns Avenue, Hampstead, NW3

2 bed 2 bath Belsize Park

25 days on market Share Portal ↗

657 sqft 61 m²

£6.32/sqft £68.03/m² 32% above Belsize Park median
£4,150/mo ◷ relisted 1×

Winchester Road, Swiss Cottage, London, NW3

1 bed 1 bath Belsize Park

Also listed here £6,500 short let ↗

listed today Share Agent's site ↗

653 sqft 61 m²

£6.36/sqft £68.46/m² 33% above Belsize Park median
£4,150/mo was £4,250 ◷ relisted 1×

Winchester Road, Swiss Cottage, London, NW3

1 bed 1 bath Belsize Park

Also listed here £6,500 short let ↗

20 days on market Share Agent's site ↗

301 sqft 28 m²

£6.48/sqft £69.75/m² 36% above Belsize Park median
£1,950/mo ◷ relisted 5×

The Quarters,120 Finchley Road, London, NW3 5HT

0 bed 1 bath Belsize Park

Also listed here £4,250 short let ↗

3 days on market Share Agent's site ↗

622 sqft 58 m²

£6.67/sqft £71.80/m² 40% above Belsize Park median
£4,147/mo was £4,199 ◷ relisted 2×

Visage Apartments, Winchester Road, London NW3

1 bed 1 bath Belsize Park

Also listed here £6,500 short let ↗

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

327 sqft 30 m²

£7.03/sqft £75.67/m² 47% above Belsize Park median
£2,300/mo ◷ relisted 6×

120 Finchley Road, London, NW3 5JB

0 bed 1 bath Belsize Park

6 days on market avail now Share Portal ↗

312 sqft 29 m²

£7.37/sqft £79.33/m² 54% above Belsize Park median
£2,300/mo ◷ relisted 4×

The Quarters, 120 Finchley Road, London, NW3 5JB

0 bed 1 bath Belsize Park

Also listed here £2,100 short let ↗

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

size unknown

—/sqft/m²
£5,993/mo £1,998 each (if split by room) was £6,899 ◷ relisted 2×

Wedderburn Road, Hampstead, NW3

3 bed 2 bath Belsize Park

Also listed here £6,478 ↗

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.