NW3 4HL
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Property report — NW3 4HL
Open-data due diligence for NW3 4HL and the area around it.
NW3 4HL in brief: 44 recorded sales (£100,000–£1,405,000) · no modelled flood risk · 2 schools nearby.
What scope is each figure? Sold sales, broadband and flood risk are for NW3 4HL itself. Where open data isn't published that finely (population, crime, schools), we show the NW3 4 sector — each figure below is tagged with its scope.
Avg sold price
£1,192,883
Population
16,336
Crimes recorded
63
Schools
3
Flood risk
None modelled
Gigabit broadband
97%
Sold-price trend (1995–2026)
Annual sold price in NW3 4, 1995–2026 — mean (blue) and median (terracotta). The median is the typical sale; a wide gap to the mean means a few high-value sales pull the average up. 2026 is a part year (20 sales so far). Hover a point for both figures. Source: HM Land Registry Price Paid.
Sold prices on this postcode
| Date | Price | Address | Type |
|---|---|---|---|
| 2023-03-22 | £508,000 | FLAT 27, 35 - 36 BELSIZE SQUARE | Flat |
| 2021-06-29 | £1,175,000 | FLAT 4, 39 BELSIZE SQUARE | Flat |
| 2020-12-04 | £1,405,000 | 37D BELSIZE SQUARE | Flat |
| 2020-04-30 | £780,000 | FLAT 6, 38 BELSIZE SQUARE | Flat |
| 2015-06-17 | £670,000 | FLAT 1, 38 BELSIZE SQUARE | Flat |
| 2014-04-28 | £1,320,008 | FLAT 2, 40 BELSIZE SQUARE | Flat |
| 2014-01-31 | £1,300,000 | 37D BELSIZE SQUARE | Flat |
| 2014-01-14 | £600,000 | FLAT 2, 39 BELSIZE SQUARE | Flat |
| 2012-03-14 | £357,500 | FLAT 5, 38 BELSIZE SQUARE | Flat |
| 2011-12-15 | £925,000 | SECOND FLOOR FLAT, 37 BELSIZE SQUARE | Flat |
| 2011-04-01 | £1,150,000 | 39A BELSIZE SQUARE | Flat |
| 2010-06-21 | £499,950 | FLAT 6, 38 BELSIZE SQUARE | Flat |
| 2010-01-05 | £731,000 | FLAT 4, 40 BELSIZE SQUARE | Flat |
| 2009-12-15 | £810,800 | FLAT 2, 40 BELSIZE SQUARE | Flat |
| 2009-09-04 | £491,000 | FLAT 2, 38 BELSIZE SQUARE | Flat |
| 2009-07-17 | £807,000 | 37D BELSIZE SQUARE | Flat |
| 2008-07-02 | £460,000 | FLAT 2, 39 BELSIZE SQUARE | Flat |
| 2007-11-16 | £405,000 | FLAT 1, 38 BELSIZE SQUARE | Flat |
| 2005-09-27 | £640,000 | FLAT 1, 39 BELSIZE SQUARE | Flat |
| 2005-09-09 | £330,000 | FLAT 4, 38 BELSIZE SQUARE | Flat |
| 2004-09-24 | £415,000 | FLAT 6, 38 BELSIZE SQUARE | Flat |
| 2004-09-17 | £695,000 | SECOND FLOOR FLAT, 37 BELSIZE SQUARE | Flat |
| 2004-06-11 | £223,000 | FLAT 5, 38 BELSIZE SQUARE | Flat |
| 2004-05-11 | £602,000 | 37D BELSIZE SQUARE | Semi-detached |
| 2004-01-15 | £100,000 | FLAT 1, 38 BELSIZE SQUARE | Flat |
| 2003-09-29 | £325,000 | FLAT 2, 38 BELSIZE SQUARE | Flat |
| 2003-09-22 | £610,000 | 39A BELSIZE SQUARE | Flat |
| 2003-07-03 | £380,000 | SECOND FLOOR FLAT, 37 BELSIZE SQUARE | Flat |
| 2003-05-27 | £440,000 | FIRST FLOOR FLAT, 37 BELSIZE SQUARE | Flat |
| 2003-03-31 | £277,000 | FLAT 4, 38 BELSIZE SQUARE | Flat |
| 2002-01-23 | £540,000 | FLAT 1, 39 BELSIZE SQUARE | Flat |
| 2001-11-30 | £540,000 | 39A BELSIZE SQUARE | Flat |
| 1999-10-20 | £312,500 | FLAT 4, 40 BELSIZE SQUARE | Flat |
| 1999-03-26 | £100,000 | FLAT 5, 38 BELSIZE SQUARE | Flat |
| 1998-04-15 | £263,000 | FIRST FLOOR FLAT, 37 BELSIZE SQUARE | Flat |
| 1997-10-10 | £262,000 | FLAT 2, 40 BELSIZE SQUARE | Flat |
| 1997-08-29 | £188,250 | FLAT 2, 38 BELSIZE SQUARE | Flat |
| 1997-08-08 | £381,000 | FLAT 1, 40 BELSIZE SQUARE | Flat |
| 1997-06-16 | £248,000 | FLAT 1, 39 BELSIZE SQUARE | Flat |
| 1996-10-08 | £232,000 | FLAT 7, 38 BELSIZE SQUARE | Flat |
| 1996-08-20 | £149,950 | FLAT 6, 38 BELSIZE SQUARE | Flat |
| 1996-07-31 | £246,750 | FLAT 1, 40 BELSIZE SQUARE | Flat |
| 1996-07-19 | £125,000 | FLAT 1, 38 BELSIZE SQUARE | Flat |
| 1995-02-16 | £142,000 | FLAT 2, 38 BELSIZE SQUARE | Flat |
44 recorded sales on NW3 4HL. Source: HM Land Registry Price Paid (© Crown copyright). Shown for this postcode only.
Nearest schools
| School | Distance | Phase | Ofsted |
|---|---|---|---|
| Rosary Catholic Primary School | 0.3 mi | Primary | Report card → |
| Holy Trinity CofE Primary School, NW3 | 0.4 mi | Primary | Report card → |
Straight-line distance from the postcode. Ofsted = latest overall effectiveness (newer inspections may be ungraded). Sources: Get Information about Schools (DfE) · Ofsted.
What's nearby
Nearest GP surgeries: GRAY'S INN MEDICAL GROUP HAMPSTEAD (0.2 mi) · SWISS COTTAGE SURGERY (0.4 mi) · ADELAIDE MEDICAL CENTRE (0.4 mi)
Nearest hospitals: ROYAL FREE HOSPITAL (0.4 mi) · ROYAL FREE HOSPITAL ED (0.4 mi) · RENAL CLINIC - ROYAL FREE HOSPITAL (0.4 mi)
Nearest listed buildings: CHURCH OF ST PETER (Grade II) (0.1 mi) · 30, ETON AVENUE (Grade II) (0.2 mi) · NUMBER 34 AND ATTACHED FRONT GARDEN BOUNDARY WALL AND GATE PIERS (Grade II) (0.2 mi)
Nearest pharmacies: VILLAGE PHARMACY (0.2 mi) · BOOTS (0.3 mi) · ALLCHINS & CO CHEMIST (0.3 mi)
Nearest stations: Belsize Park (0.3 mi) · Swiss Cottage (0.4 mi) · Finchley Road (0.5 mi)
Nearest supermarkets: pomona (0.3 mi) · Waitrose (0.5 mi) · Pricewise Food & Wine (0.5 mi)
Straight-line distance from the postcode. Source: NaPTAN (DfT).
Who lives here
- Median age
- 38
- One-person households
- 43%
- Households with children
- 21%
- Households
- 7,888
Owned 39% · Social rent 14% · Private rent 47%
Census 2021 (ONS), for NW3 4.
Recorded crime trend
Recorded crimes per month in NW3 4 (May 24–Apr 26, average 80/month). Hover a point to read the count. Source: Police.uk street-level data.
Flood risk
No modelled flood risk is recorded for NW3 4HL in the Environment Agency dataset. This is reassuring but not a guarantee — Check the exact address on the official Environment Agency map →
Source: Environment Agency Risk of Flooding from Rivers and Sea (the official dataset name). Indicative catchment data, not an official property flood search.
How granular is this?
| Measure | DistrictNW3 | SectorNW3 4 | PostcodeNW3 4HL |
|---|---|---|---|
| Average sold price | £1,697,341 | £1,192,883 | £526,425 |
| Population | 74,834 | 16,336 | — |
| Deprivation decile (1 = most deprived) | 7/10 | 7/10 | — |
| Crimes recorded | 422 | 63 | — |
| Schools | 36 | 3 | — |
| Flood risk | Low | Low | Low |
| Gigabit broadband | 93% | 97% | 100% |
| Superfast broadband | 100% | 99% | 100% |
— = no separate figure is published at that level. Most open data is published down to the sector (NW3 4); the postcode column is built from the layers that go finer (sold transactions, Ofcom broadband). Sources: HM Land Registry · Police.uk · Ofsted/GIAS · ONS & IoD2025 · Environment Agency · Ofcom.
Your next steps
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Report generated 30 June 2026. Open data is refreshed periodically; HM Land Registry Price Paid typically lags by around two months, so the most recent sales may not appear yet.
Contains OS data © Crown copyright and database right 2026
Contains Royal Mail data © Royal Mail copyright and database right 2026
Contains National Statistics data © Crown copyright and database right 2026
Indicative due diligence compiled from public open data. Not a substitute for a regulated conveyancing or property search, a survey, or professional advice.