Belsize Avenue - NW3 4BL
Key Postcode Insights
NW3 4BL is a residential postcode situated on Belsize Avenue, London, NW3 with 113 addresses.
It ranks as the 1178th largest and 205th most expensive of the 1,182 postcodes in the NW3 area. The most common property type is a period flat built between 1800 and 1911.
The postcode contains a total of 113 properties: 1 house and 112 flats.
- Ave. Sale Price
- £790,347
- 10 Year change
- down 7.1%
- Ave. Rental Price
- £2,979pcm
- 10 Year change
- up 42.0%
- Ave. £ per ft²
- £1,049/ft²
- Ave. Gross Yield
- 4.5%/year/yr
Key Postcode Insights
NW3 4BL is a residential postcode situated on Belsize Avenue, London, NW3 with 113 addresses.
It ranks as the 1178th largest and 205th most expensive of the 1,182 postcodes in the NW3 area. The most common property type is a period flat built between 1800 and 1911.
The postcode contains a total of 113 properties: 1 house and 112 flats.
- Ave. Sale Price
- £790,347
- 10 Year change
- down 7.1%
- Ave. Rental Price
- £2,979pcm
- 10 Year change
- up 42.0%
- Ave. £ per ft²
- £1,049/ft²
- Ave. Gross Yield
- 4.5%/year/yr
Explore Propertiesin NW3 4BL
- 1 Belsize Avenue
Period Building | 5 Units
- 3 Belsize Avenue
Period Building | 7 Units
- 5 Belsize Avenue
Period Building | 8 Units
- 7 Belsize Avenue
Building  |  2 Flats
- 9 Belsize Avenue
Period Building | 5 Units
Sales Market Trends
The last sale in NW3 4BL sold for £700,000 on 17th April 2026. Since then prices are down an average of 0.4%.
The current average value in the postcode is £790,347.
The NW3 4BL Sales Market has decreased by 7.1% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | -2.7% | £790,347 |
| June 2025 | -0.4% | £812,441 |
| June 2024 | -1.2% | £815,764 |
| June 2023 | 0.6% | £825,380 |
| June 2022 | 2.4% | £820,120 |
| June 2021 | 0.6% | £800,586 |
| June 2020 | 0.3% | £795,814 |
| June 2019 | -0.1% | £793,202 |
| June 2018 | -2.9% | £794,153 |
| June 2017 | -3.9% | £818,182 |
| June 2016 | 1.7% | £851,015 |
| June 2015 | 3% | £836,412 |
| June 2014 | 14.7% | £811,923 |
| June 2013 | 7.2% | £707,919 |
| June 2012 | 10.4% | £660,415 |
| June 2011 | 5% | £598,068 |
| June 2010 | 20.9% | £569,671 |
| June 2009 | -11.8% | £471,123 |
| June 2008 | 8.3% | £534,111 |
| June 2007 | 0% | £492,992 |
Rental Market Trends
The current average rental value in the postcode is £2,979.
The NW3 4BL Rental Market has increased by 42.0% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | 6.1% | £2,979pcm |
| June 2025 | 3.1% | £2,806pcm |
| June 2024 | 3.7% | £2,723pcm |
| June 2023 | 10% | £2,625pcm |
| June 2022 | 17.7% | £2,385pcm |
| June 2021 | -6.2% | £2,026pcm |
| June 2020 | 0.7% | £2,160pcm |
| June 2019 | 3.7% | £2,144pcm |
| June 2018 | 0.4% | £2,069pcm |
| June 2017 | -1.8% | £2,060pcm |
| June 2016 | -0.8% | £2,097pcm |
| June 2015 | 2.9% | £2,113pcm |
| June 2014 | 0% | £2,054pcm |
| June 2013 | -2% | £2,054pcm |
| June 2012 | 3% | £2,096pcm |
| June 2011 | 10.7% | £2,035pcm |
| June 2010 | 11% | £1,837pcm |
| June 2009 | -12.5% | £1,655pcm |
| June 2008 | 7.7% | £1,893pcm |
| June 2007 | 0% | £1,757pcm |
Sales History
The last sale was on 17th April 2026 for £700,000 and since then the market in the area has decreased by 0.4%. The postcode has had a total of 129 sales since 1995.
NW3 4BL has seen 10 sales in the last three years and 2 sales in the last twelve months.
- Sold Apr 2026£700,000 | 3 Bed FlatFlat 7, 27, Belsize Avenue, London, NW3 4BLFlat 7, 27, Belsize Avenue, London, NW3 4BL
- Sold Nov 2025£780,000 | 3 Bed FlatFlat 26, 15, Belsize Avenue, London, NW3 4BLFlat 26, 15, Belsize Avenue, London, NW3 4BL
- Sold Mar 2025£550,000 | 2 Bed FlatFlat 3, 21, Belsize Avenue, London, NW3 4BLFlat 3, 21, Belsize Avenue, London, NW3 4BL
- Sold Feb 2025£1,135,000 | 2 Bed FlatFlat 3, 5, Belsize Avenue, London, NW3 4BLFlat 3, 5, Belsize Avenue, London, NW3 4BL
- Sold Sep 2024£625,000 | 2 Bed FlatFlat 4, 27, Belsize Avenue, London, NW3 4BLFlat 4, 27, Belsize Avenue, London, NW3 4BL
Nearby Postcodes
NW3 4BL is the 1178th largest and the 205th most expensive postcode out of the 1,182 postcodes in the NW3 area.
- NW3 5AS, Belsize Lane, London, NW3NW3 5AS24 Addresses|52 m away
- NW3 5AT, Belsize Mews, London, NW3NW3 5AT14 Addresses|53 m away
- NW3 4AU, Belsize Avenue, London, NW3NW3 4AU57 Addresses|59 m away
- NW3 4AX, Belsize Terrace, London, NW3NW3 4AX6 Addresses|73 m away
- NW3 5AH, Village Close, London, NW3NW3 5AH15 Addresses|77 m away
Property Types
- 84 period flats built between 1800 and 1911
- 28 mid-century flats built between 1936 and 1979
- 1 other address of unknown type
- period flat (84)
- mid-century flat (28)
- Unknown (1)
Energy Efficiency
- Energy Performance Certificate (EPC) surveys conducted for 81 properties.
- The most common rating is C.
- A (0)
- E (3)
- B (0)
- F (0)
- C (39)
- G (0)
- D (39)
- No EPC (32)
Top 3 Most Expensive Sales
- Sold Feb 2014£4,500,000 | 6 Bed House48, Belsize Avenue, London, NW3 4AE48, Belsize Avenue, London, NW3 4AE
- Sold Dec 2008£4,350,000 | 6 Bed House61, Belsize Avenue, London, NW3 4BN61, Belsize Avenue, London, NW3 4BN
- Sold May 2022£3,845,000 | 4 Bed FlatFlat 1, 21, Belsize Avenue, London, NW3 4BLFlat 1, 21, Belsize Avenue, London, NW3 4BL
Schools Nearby
- Rosary Catholic Primary School400 m away
- Fitzjohn's Primary School600 m away
- Holy Trinity CofE Primary School, NW3600 m away
- The UCL Academy900 m away
- Haverstock School1.3 km away
- Harris Academy St John's Wood1.4 km away
More reading links
Public Transport Nearby
The closest station to NW3 4BL is Belsize Park station, which is 400 metres away.
- Belsize Park|400 m away
- Finchley Road|700 m away
- Hampstead Heath|700 m away
- Swiss Cottage|700 m away
