Flat A, 45, Belsize Park has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 07 Aug 2015.

The property is not connected to mains gas and has high performance glazing. It is heated using a boiler and underfloor heating (mains gas).

According to HM Land Registry, Flat A, 45, Belsize Park was last sold on 13th October 2015 for £2,975,000 and was recorded as a leasehold flat.

The property has only had this single sale since 1995.

Since October 2015, the market for similar properties has dropped by 13.2%.

• Sold Oct 2015£2,975,000

According to the Land Registry and our network of Estate Agents, there have been 19 sales of properties similar to Flat A, 45, Belsize Park within a radius of 300 metres since 2009.

The most recent example is Flat 16, De Laszlo House 3-7, Fitzjohns Avenue, London, NW3 5JY, a leasehold flat which sold for £1,760,000 on the 16th April 2026.

Read more about house prices in NW3.

• Sold Apr 2026£1,760,000 | 4 Bed FlatFlat 16, De Laszlo House 3-7, Fitzjohns Avenue, London, NW3 5JYFlat 16, De Laszlo House 3-7, Fitzjohns Avenue, London, NW3 5JY
• Sold Sep 2025£2,050,000 | 4 Bed FlatFlat 48, Eton Court, Eton Avenue, London, NW3 3HJFlat 48, Eton Court, Eton Avenue, London, NW3 3HJ
• Sold Jul 2025£1,840,000 | 4 Bed Flat15D, Fitzjohns Avenue, London, NW3 5JY15D, Fitzjohns Avenue, London, NW3 5JY
• Sold May 2025£2,190,000 | 4 Bed FlatFlat 14, De Laszlo House 3-7, Fitzjohns Avenue, London, NW3 5JYFlat 14, De Laszlo House 3-7, Fitzjohns Avenue, London, NW3 5JY
• Sold Sep 2024£2,200,000 | 4 Bed FlatFlat 27, Eton Court, Eton Avenue, London, NW3 3HJFlat 27, Eton Court, Eton Avenue, London, NW3 3HJ
• Sold Jun 2024£3,000,000 | 4 Bed FlatFlat 12, De Laszlo House 3-7, Fitzjohns Avenue, London, NW3 5JYFlat 12, De Laszlo House 3-7, Fitzjohns Avenue, London, NW3 5JY
• Sold Apr 2024£1,675,000 | 4 Bed FlatFlat 19, Eton Court, Eton Avenue, London, NW3 3HJFlat 19, Eton Court, Eton Avenue, London, NW3 3HJ
• Sold Feb 2024£2,000,000 | 4 Bed FlatFlat 42, Eton Court, Eton Avenue, London, NW3 3HJFlat 42, Eton Court, Eton Avenue, London, NW3 3HJ
• Sold Jun 2019£1,700,000 | 4 Bed Flat18A, Fitzjohns Avenue, London, NW3 5NA18A, Fitzjohns Avenue, London, NW3 5NA
• Sold Apr 2017£1,900,000 | 4 Bed FlatFlat D, 31, Lancaster Grove, London, NW3 4EXFlat D, 31, Lancaster Grove, London, NW3 4EX
• Sold Sep 2016£2,140,000 | 4 Bed FlatFlat 4, 4, Belsize Park, London, NW3 4ETFlat 4, 4, Belsize Park, London, NW3 4ET
• Sold Jan 2016£2,030,000 | 4 Bed FlatFlat 3, 71, Eton Avenue, London, NW3 3EUFlat 3, 71, Eton Avenue, London, NW3 3EU
• Sold Oct 2015£2,975,000 | 4 Bed FlatFlat A, 44, Belsize Park, London, NW3 4EEFlat A, 44, Belsize Park, London, NW3 4EE
• Sold May 2015£2,150,000 | 4 Bed FlatFlat 2, 42, Belsize Square, London, NW3 4HNFlat 2, 42, Belsize Square, London, NW3 4HN
• Sold Feb 2014£1,400,000 | 4 Bed Flat8B , Buckland Crescent, London, NW3 5DX8B , Buckland Crescent, London, NW3 5DX
• Sold Feb 2013£2,350,000 | 4 Bed FlatFlat 3, De Laszlo House 3-7, Fitzjohns Avenue, London, NW3 5JYFlat 3, De Laszlo House 3-7, Fitzjohns Avenue, London, NW3 5JY
• Sold Jan 2012£2,725,000 | 4 Bed FlatFlat 13, De Laszlo House 3-7, Fitzjohns Avenue, London, NW3 5JYFlat 13, De Laszlo House 3-7, Fitzjohns Avenue, London, NW3 5JY
• Sold Sep 2011£1,800,000 | 4 Bed FlatFlat A, 31, Lancaster Grove, London, NW3 4EXFlat A, 31, Lancaster Grove, London, NW3 4EX
• Sold Jun 2009£1,000,000 | 4 Bed FlatFlat 40, Eton Court, Eton Avenue, London, NW3 3HJFlat 40, Eton Court, Eton Avenue, London, NW3 3HJ

Our network of Estate Agents reports 1 let within 300 metres of Flat A, 45, Belsize Park over the last 2 years.

Most recently, 15C, Fitzjohns Avenue, London, NW3 5JY, a leasehold flat, was let by Fine Living in February 2025.

• 
  Let agreed Feb 2025£ Undisclosed | 3 Bed Flat15C, Fitzjohns Avenue, London, NW3 5JY15C, Fitzjohns Avenue, London, NW3 5JY

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

Belsize Park, London, NW3 has a total of 423 addresses. According to our analysis of all the public data, Flat A, 45, Belsize Park is the 15th largest and the 20th most expensive property on the street.

When compared to the postcode district it is £643k more expensive than the average property in NW3.

• Holy Trinity CofE Primary School, NW3

  300 m away
• Fitzjohn's Primary School

  800 m away
• Rosary Catholic Primary School

  800 m away

• The UCL Academy

  500 m away
• Harris Academy St John's Wood

  1.0 km away
• Haverstock School

  1.4 km away

• Swiss Cottage

  |

  300 m away
• Finchley Road

  |

  400 m away
• South Hampstead

  |

  600 m away

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