Flat 1, 9, Belsize Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 10 Jan 2018.

The property is connected to mains gas and has partial double glazing. It is heated using a boiler and radiators (mains gas).

According to HM Land Registry, Flat 1, 9, Belsize Square was last sold on 3rd April 2020 for £1,464,500 and was recorded as a leasehold flat.

The property has had 3 sales since 1995.

Since April 2020, the market for similar properties has dropped by 8.6%.

• Sold Apr 2020£1,464,500
• Sold Jul 2007£1,100,000
• Sold May 2002£517,500

According to the Land Registry and our network of Estate Agents, there have been 42 sales of properties similar to Flat 1, 9, Belsize Square within a radius of 270 metres since 2012.

The most recent example is Flat 3, 11, Belsize Park, London, NW3 4ES, a leasehold flat which sold for £1,350,000 on the 20th March 2025.

Read more about house prices in NW3.

• Sold Mar 2025£1,350,000 | 3 Bed FlatFlat 3, 11, Belsize Park, London, NW3 4ESFlat 3, 11, Belsize Park, London, NW3 4ES
• Sold Jan 2025£1,520,000 | 3 Bed FlatFlat 5, 13, Belsize Park Gardens, London, NW3 4JGFlat 5, 13, Belsize Park Gardens, London, NW3 4JG
• Sold Dec 2024£1,370,000 | 3 Bed Flat21B , Buckland Crescent, London, NW3 5DH21B , Buckland Crescent, London, NW3 5DH
• Sold Jul 2024£1,563,290 | 3 Bed FlatFlat 5, 42, Belsize Square, London, NW3 4HNFlat 5, 42, Belsize Square, London, NW3 4HN
• Sold Jun 2023£1,700,000 | 4 Bed FlatFlat 4, 16, Belsize Park, London, NW3 4ESFlat 4, 16, Belsize Park, London, NW3 4ES
• Sold Sep 2022£1,520,000 | 3 Bed FlatFlat 1, 14, Belsize Park, London, NW3 4ESFlat 1, 14, Belsize Park, London, NW3 4ES
• Sold Aug 2022£1,330,000 | 3 Bed FlatFlat 4, 22, Belsize Square, London, NW3 4HTFlat 4, 22, Belsize Square, London, NW3 4HT
• Sold Feb 2022£1,625,000 | 3 Bed Flat15A, Belsize Square, London, NW3 4HT15A, Belsize Square, London, NW3 4HT
• Sold Jun 2021£1,200,000 | 3 Bed FlatFlat 2, 9, Belsize Square, London, NW3 4HTFlat 2, 9, Belsize Square, London, NW3 4HT
• Sold Mar 2021£730,000 | 3 Bed Flat3B , Strathray Gardens, London, NW3 4PA3B , Strathray Gardens, London, NW3 4PA
• Sold Jan 2020£1,175,000 | 3 Bed FlatFlat 2, 17, Buckland Crescent, London, NW3 5DHFlat 2, 17, Buckland Crescent, London, NW3 5DH
• Sold Dec 2019£1,490,000 | 3 Bed Flat18A, Belsize Square, London, NW3 4HT18A, Belsize Square, London, NW3 4HT
• Sold Jun 2019£1,400,000 | 3 Bed FlatFlat 1, 13, Belsize Square, London, NW3 4HTFlat 1, 13, Belsize Square, London, NW3 4HT
• Sold Jun 2019£1,050,000 | 3 Bed Flat34B, Belsize Park Gardens, London, NW3 4LH34B, Belsize Park Gardens, London, NW3 4LH
• Sold Feb 2019£1,162,000 | 3 Bed FlatFlat 7, 33, Belsize Park, London, NW3 4DXFlat 7, 33, Belsize Park, London, NW3 4DX
• Sold Nov 2018£1,200,000 | 3 Bed Flat7B , Belsize Park Gardens, London, NW3 4LB7B , Belsize Park Gardens, London, NW3 4LB
• Sold May 2018£1,560,000 | 3 Bed FlatFlat 1, 15, Belsize Park Gardens, London, NW3 4JGFlat 1, 15, Belsize Park Gardens, London, NW3 4JG
• Sold Jun 2015£1,450,000 | 3 Bed FlatFlat 2, 22, Belsize Square, London, NW3 4HTFlat 2, 22, Belsize Square, London, NW3 4HT
• Sold Mar 2015£1,245,000 | 3 Bed FlatFlat 2, 13, Belsize Square, London, NW3 4HTFlat 2, 13, Belsize Square, London, NW3 4HT
• Sold Dec 2012£1,200,000 | 3 Bed FlatFlat 3, 19, Buckland Crescent, London, NW3 5DHFlat 3, 19, Buckland Crescent, London, NW3 5DH

Our network of Estate Agents reports 2 lets within 270 metres of Flat 1, 9, Belsize Square over the last 2 years.

Most recently, 3B , Lancaster Drive, London, NW3 4EY, a leasehold flat, was let by Fine Living in February 2025.

• 
  Let agreed Feb 2025£ Undisclosed | 2 Bed Flat3B , Lancaster Drive, London, NW3 4EY3B , Lancaster Drive, London, NW3 4EY
• 
  Let agreed Mar 2024£ Undisclosed | 1 Bed Flat3A , Lancaster Drive, London, NW3 4EY3A , Lancaster Drive, London, NW3 4EY

•Nearby is defined as the radius comprising the nearest 2,000 addresses.

Belsize Square, London, NW3 has a total of 264 addresses. According to our analysis of all the public data, Flat 1, 9, Belsize Square is the 79th largest and the 39th most expensive property on the street.

When compared to the postcode district it is £72k more expensive than the average property in NW3.

• Holy Trinity CofE Primary School, NW3

  500 m away
• Rosary Catholic Primary School

  600 m away
• St Paul's Church of England Primary School

  800 m away

• The UCL Academy

  600 m away
• Harris Academy St John's Wood

  1.1 km away
• Haverstock School

  1.2 km away

• Swiss Cottage

  |

  500 m away
• Belsize Park

  |

  600 m away
• Finchley Road

  |

  600 m away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.