Flat 3, 3, Belsize Park Gardens has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 02 Oct 2019.

The property is connected to mains gas and has single glazed windows. It is heated using Boiler and radiators, mains gas.

According to HM Land Registry, Flat 3, 3, Belsize Park Gardens was last sold on 23rd December 2008 for £940,000 and was recorded as a leasehold flat.

The property has had 3 sales since 1995.

Since December 2008, the market for similar properties has risen by 40.5%.

• Sold Dec 2008£940,000
• Sold Mar 2007£1,000,000
• Sold Sep 2006£620,000

According to the Land Registry and our network of Estate Agents, there have been 3 sales of properties similar to Flat 3, 3, Belsize Park Gardens within a radius of 250 metres over the last 2 years.

The most recent example is 10A, Belsize Park, London, NW3 4ES, a leasehold flat which sold for £2,000,000 on the 17th July 2025.

Read more about house prices in NW3.

• Sold Jul 2025£2,000,000 | 3 Bed Flat10A, Belsize Park, London, NW3 4ES10A, Belsize Park, London, NW3 4ES
• Sold Mar 2025£1,350,000 | 3 Bed FlatFlat 3, 11, Belsize Park, London, NW3 4ESFlat 3, 11, 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

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

Our network of Estate Agents reports 2 lets within 250 metres of Flat 3, 3, Belsize Park Gardens 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 Park Gardens, London, NW3 has a total of 540 addresses. According to our analysis of all the public data, Flat 3, 3, Belsize Park Gardens is the 121st largest and the 68th most expensive property on the street.

When compared to the postcode district it is £213k more expensive than the average property in NW3.

• 500

  m

  Rosary Catholic Primary School
• 600

  m

  Holy Trinity CofE Primary School, NW3
• 700

  m

  Fitzjohn's Primary School

• 700

  m

  The UCL Academy
• 1.2

  km

  Haverstock School
• 1.2

  km

  Harris Academy St John's Wood

• 500

  m

  Belsize Park
• 600

  m

  Swiss Cottage
• 700

  m

  Finchley Road

According to recent data from Ofcom, superfast broadband is available in this area.

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