SW3 3AX
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Property report — SW3 3AX
Open-data due diligence for SW3 3AX and the area around it.
SW3 3AX in brief: 59 recorded sales (£72,000–£2,150,000) · no modelled flood risk · 6 schools nearby.
What scope is each figure? Sold sales, broadband and flood risk are for SW3 3AX itself. Where open data isn't published that finely (population, crime, schools), we show the SW3 3 sector — each figure below is tagged with its scope.
Avg sold price
£1,435,555
Population
10,696
Crimes recorded
52
Schools
1
Flood risk
None modelled
Gigabit broadband
99%
Sold-price trend (1995–2026)
Annual average (mean) sold price in SW3 3, 1995–2026. 2026 is a part year (15 sales so far) — shown greyed. Hover a point to read its value. Source: HM Land Registry Price Paid.
Sold prices on this postcode
| Date | Price | Address | Type |
|---|---|---|---|
| 2025-07-07 | £515,000 | FLAT 146, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2025-03-04 | £530,000 | FLAT 137, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2022-06-08 | £425,000 | FLAT 130, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2021-06-30 | £555,000 | FLAT 124, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2019-08-16 | £590,000 | FLAT 133, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2018-01-23 | £2,150,000 | THE PENTHOUSE, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2016-12-15 | £1,800,000 | THE PENTHOUSE, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2016-08-22 | £510,000 | FLAT 134, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2016-03-30 | £547,900 | FLAT 131, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2016-01-11 | £750,000 | FLAT 129, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2015-09-15 | £635,000 | FLAT 128, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2014-10-23 | £690,000 | FLAT 146, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2014-09-08 | £710,000 | FLAT 137, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2013-09-13 | £480,000 | FLAT 302, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2013-06-10 | £475,000 | FLAT 142, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2012-02-13 | £400,000 | FLAT 130, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2012-01-06 | £345,000 | FLAT 141, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2011-09-30 | £435,221 | FLAT 123, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2011-09-26 | £360,000 | FLAT 302, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2010-04-30 | £360,000 | FLAT 140, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2010-01-22 | £385,000 | FLAT 129, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2008-12-10 | £330,000 | FLAT 137, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2008-04-11 | £338,000 | FLAT 133, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2007-08-28 | £326,000 | FLAT 127, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2007-05-10 | £335,000 | FLAT 134, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2007-01-03 | £249,500 | FLAT 134, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2006-07-17 | £237,500 | FLAT 137, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2005-07-15 | £320,000 | FLAT 147, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2005-01-28 | £197,500 | FLAT 140, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2004-07-14 | £287,000 | FLAT 129, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2004-05-06 | £227,000 | FLAT 141, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2004-04-27 | £229,500 | FLAT 144, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2004-04-22 | £224,500 | FLAT 145, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2004-04-20 | £227,000 | FLAT 143, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2004-04-01 | £222,000 | FLAT 142, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2003-08-19 | £167,500 | 015, NELL GWYNN HOUSE | Flat |
| 2003-08-11 | £190,000 | FLAT 137, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2002-03-26 | £130,207 | FLAT 128, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2002-03-26 | £130,207 | FLAT 133, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2001-12-14 | £170,000 | 015, NELL GWYNN HOUSE | Flat |
| 2001-10-25 | £225,000 | FLAT 123, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2001-07-27 | £175,000 | FLAT 140, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2001-06-14 | £179,000 | FLAT 135, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2001-05-11 | £169,000 | FLAT 140, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2001-02-21 | £250,000 | FLAT 147, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2000-12-12 | £176,000 | FLAT 146, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 2000-08-04 | £160,000 | 015, NELL GWYNN HOUSE | Flat |
| 1999-08-31 | £165,000 | FLAT 130, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 1998-09-24 | £105,000 | 5, NELL GWYNN HOUSE | Flat |
| 1998-08-21 | £111,000 | FLAT 130, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 1998-07-31 | £180,000 | FLAT 134, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 1998-05-06 | £125,000 | FLAT 134, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 1996-09-21 | £81,000 | FLAT 139, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 1996-09-20 | £72,000 | FLAT 132, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 1996-07-02 | £93,500 | 015, NELL GWYNN HOUSE | Flat |
| 1995-11-30 | £87,975 | FLAT 138, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 1995-08-10 | £88,500 | FLAT 123, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
| 1995-05-15 | £76,250 | 5, NELL GWYNN HOUSE | Flat |
| 1995-01-04 | £75,000 | FLAT 139, NELL GWYNN HOUSE SLOANE AVENUE | Flat |
59 recorded sales on SW3 3AX. Source: HM Land Registry Price Paid (© Crown copyright). Shown for this postcode only.
Nearest schools
| School | Distance | Phase | Ofsted |
|---|---|---|---|
| Marlborough Primary School | 0.1 mi | Primary | Report card → |
| St Joseph's Catholic Primary School | 0.1 mi | Primary | Outstanding (2024) |
| St. Thomas More Language College | 0.1 mi | Secondary | Good (2022) |
| Oratory Roman Catholic Primary School | 0.3 mi | Primary | Outstanding (2023) |
| Holy Trinity CofE Primary School | 0.4 mi | Primary | Report card → |
| Christ Church CofE Primary School | 0.5 mi | Primary | Outstanding (2024) |
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: HEALTH PARTNERS AT VIOLET MELCHETT (0.4 mi) · THE CHELSEA PRACTICE (0.4 mi) · KNIGHTSBRIDGE MEDICAL CENTRE (0.5 mi)
Nearest hospitals: ROYAL BROMPTON HOSPITAL (0.3 mi) · CWFT SURGICAL HUB - ROYAL MARSDEN HOSPITAL (0.4 mi) · THE ROYAL MARSDEN HOSPITAL (LONDON) (0.4 mi)
Nearest listed buildings: THE GATEWAYS (Grade II) (0.1 mi) · 24-47, HALSEY STREET SW3 (Grade II) (0.1 mi) · SHUCKBURGH ARMS PUBLIC HOUSE (Grade II) (0.1 mi)
Nearest pharmacies: CHELSEA PHARMACY (0.0 mi) · CHELSEA GREEN (ASTELL) PHARMACY (0.1 mi) · BOOTS (0.2 mi)
Nearest stations: Sloane Square (0.4 mi) · South Kensington (0.4 mi) · Knightsbridge (0.7 mi)
Nearest supermarkets: Whole Foods Market (0.2 mi) · The Chelsea Grocer (0.2 mi) · Waitrose (0.3 mi)
Straight-line distance from the postcode. Source: NaPTAN (DfT).
Who lives here
- Median age
- 38
- One-person households
- 48%
- Households with children
- 17%
- Households
- 5,154
Owned 34% · Social rent 22% · Private rent 44%
Census 2021 (ONS), for SW3 3.
Recorded crime trend
Recorded crimes per month in SW3 3 (Aug 24–Apr 26, average 67/month). Hover a point to read the count. Source: Police.uk street-level data.
Flood risk
No modelled flood risk is recorded for SW3 3AX 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 | DistrictSW3 | SectorSW3 3 | PostcodeSW3 3AX |
|---|---|---|---|
| Average sold price | £2,457,607 | £1,435,555 | £352,216 |
| Population | 36,064 | 10,696 | — |
| Deprivation decile (1 = most deprived) | 6/10 | 5/10 | — |
| Crimes recorded | 472 | 52 | — |
| Schools | 10 | 1 | — |
| Flood risk | High | Low | Low |
| Gigabit broadband | 93% | 99% | 100% |
| Superfast broadband | 99% | 100% | 100% |
— = no separate figure is published at that level. Most open data is published down to the sector (SW3 3); 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
Get the official title document
The HM Land Registry title register shows the legal owner, price paid and any charges or covenants. Official copy, £7.
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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.