Our Data Sources
1 Avenue House, Belsize Park Gardens has a single entry in the Land Registry from October 2016 and a single entry in the EPC database dated May 2026.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 1 out of 5 and is considered of low accuracy.
Price Range & Condition
In very good condition, we estimate 1 Avenue House, Belsize Park Gardens would be worth £1,268,069, with a potential rental value of £4,877 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £1,123,146, with a rental value of £4,320 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
1 Avenue House, Belsize Park Gardens has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 01 May 2026.
The property is connected to mains gas and has some double glazing. It is heated using Boiler and radiators, mains gas.
Sold Prices
1 Avenue House, Belsize Park Gardens last changed hands on 6th October 2016, selling for £1,300,000. The transaction was logged as a leasehold flat by HM Land Registry.
That is its only recorded sale since 1995.
The market for similar properties has dropped by 19.7% since October 2016.
- Sold Oct 2016£1,300,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 3 sales of comparable properties within 250 metres of 1 Avenue House, Belsize Park Gardens across the last 2 years.
Most recently, 44A, Belsize Square, London, NW3 4HN, a leasehold flat, sold at £1,040,000 on the 27th August 2025.
Read more about house prices in NW3.
- Sold Aug 2025£1,040,000 | 3 Bed Flat44A, Belsize Square, London, NW3 4HN44A, Belsize Square, London, NW3 4HN
- Sold Nov 2024£1,550,000 | 3 Bed Flat19C , Belsize Park, London, NW3 4DU19C , Belsize Park, London, NW3 4DU
- Sold Oct 2024£1,269,537 | 3 Bed Flat46A, Belsize Square, London, NW3 4HN46A, Belsize Square, London, NW3 4HN
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Properties Let Nearby
Agents in our network have reported 2 lettings within 250 metres of 1 Avenue House, Belsize Park Gardens across the last 2 years.
The newest of these is 3B , Lancaster Drive, London, NW3 4EY, a leasehold flat let by Fine Living in February 2025.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
Location Comparison
Our analysis of the public data ranks 1 Avenue House, Belsize Park Gardens as the 134th largest and the 118th most expensive of the 540 addresses on Belsize Park Gardens, London, NW3.
Against the NW3 postcode district average, it is £117k less expensive than the typical property.
More reading links
Schools Nearby
- 400mRosary Catholic Primary School
- 600mHoly Trinity CofE Primary School, NW3
- 700mFitzjohn's Primary School
- 800mThe UCL Academy
- 1.2kmHaverstock School
- 1.3kmHarris Academy St John's Wood
More reading links
Public Transport Nearby
- 400mBelsize Park
- 700mSwiss Cottage
- 700mFinchley Road
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a very low risk of flooding.
