SG4 8SW
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Property report — SG4 8SW
Open-data due diligence for SG4 8SW and the area around it.
SG4 8SW in brief: 90 recorded sales (£42,500–£435,000) · no modelled flood risk · 6 schools nearby.
What scope is each figure? Sold sales, broadband and flood risk are for SG4 8SW itself. Where open data isn't published that finely (population, crime, schools), we show the SG4 8 sector — each figure below is tagged with its scope.
Avg sold price
£603,213
Population
14,355
Crimes recorded
5
Schools
5
Flood risk
None modelled
Gigabit broadband
40%
Sold-price trend (1995–2026)
Annual sold price in SG4 8, 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 (26 sales so far). Hover a point for both figures. Source: HM Land Registry Price Paid.
Sold prices on this postcode
| Date | Price | Address | Type |
|---|---|---|---|
| 2026-01-16 | £245,000 | 32 MAYFLOWER CLOSE | Terraced |
| 2025-11-20 | £355,000 | 38 MAYFLOWER CLOSE | Terraced |
| 2025-10-17 | £435,000 | 2 MAYFLOWER CLOSE | Semi-detached |
| 2025-04-17 | £283,000 | 10 MAYFLOWER CLOSE | Terraced |
| 2024-07-26 | £270,000 | 7 MAYFLOWER CLOSE | Terraced |
| 2023-02-24 | £220,000 | 4 MAYFLOWER CLOSE | Terraced |
| 2022-09-23 | £294,000 | 6 MAYFLOWER CLOSE | Terraced |
| 2022-07-20 | £350,000 | 30 MAYFLOWER CLOSE | Terraced |
| 2022-04-14 | £267,500 | 3 MAYFLOWER CLOSE | Terraced |
| 2021-08-27 | £309,000 | 9 MAYFLOWER CLOSE | Terraced |
| 2021-06-04 | £249,900 | 10 MAYFLOWER CLOSE | Terraced |
| 2021-04-09 | £335,000 | 12 MAYFLOWER CLOSE | Terraced |
| 2021-02-25 | £342,000 | 24 MAYFLOWER CLOSE | Terraced |
| 2020-09-02 | £290,000 | 38 MAYFLOWER CLOSE | Terraced |
| 2020-02-07 | £227,500 | 14 MAYFLOWER CLOSE | Terraced |
| 2019-12-04 | £200,000 | 4 MAYFLOWER CLOSE | Terraced |
| 2017-11-20 | £283,000 | 24 MAYFLOWER CLOSE | Terraced |
| 2016-12-15 | £295,000 | 38 MAYFLOWER CLOSE | Terraced |
| 2016-10-28 | £282,000 | 12 MAYFLOWER CLOSE | Terraced |
| 2016-10-28 | £250,000 | 10 MAYFLOWER CLOSE | Terraced |
| 2016-07-22 | £233,000 | 5 MAYFLOWER CLOSE | Terraced |
| 2016-07-20 | £200,000 | 22 MAYFLOWER CLOSE | Terraced |
| 2016-07-08 | £290,000 | 1 MAYFLOWER CLOSE | Terraced |
| 2016-01-15 | £220,000 | 7 MAYFLOWER CLOSE | Terraced |
| 2015-09-02 | £245,000 | 2 MAYFLOWER CLOSE | Semi-detached |
| 2015-08-17 | £260,000 | 9 MAYFLOWER CLOSE | Terraced |
| 2015-07-31 | £140,000 | 8 MAYFLOWER CLOSE | Terraced |
| 2015-06-10 | £217,000 | 11 MAYFLOWER CLOSE | Terraced |
| 2014-12-22 | £193,000 | 10 MAYFLOWER CLOSE | Terraced |
| 2014-09-08 | £240,000 | 24 MAYFLOWER CLOSE | Terraced |
| 2013-11-04 | £229,950 | 22 MAYFLOWER CLOSE | Terraced |
| 2013-08-05 | £136,500 | 32 MAYFLOWER CLOSE | Terraced |
| 2013-02-01 | £129,000 | 4 MAYFLOWER CLOSE | Terraced |
| 2012-08-01 | £145,000 | 3 MAYFLOWER CLOSE | Terraced |
| 2012-03-15 | £175,000 | 9 MAYFLOWER CLOSE | Terraced |
| 2012-03-05 | £195,000 | 30 MAYFLOWER CLOSE | Terraced |
| 2011-11-23 | £191,000 | 26 MAYFLOWER CLOSE | Terraced |
| 2010-08-13 | £192,500 | 22 MAYFLOWER CLOSE | Terraced |
| 2010-07-02 | £165,000 | 5 MAYFLOWER CLOSE | Terraced |
| 2010-03-19 | £156,650 | 7 MAYFLOWER CLOSE | Terraced |
| 2010-03-01 | £135,000 | 8 MAYFLOWER CLOSE | Terraced |
| 2009-12-17 | £128,500 | 14 MAYFLOWER CLOSE | Terraced |
| 2008-10-27 | £145,000 | 15 MAYFLOWER CLOSE | Detached |
| 2007-09-28 | £180,000 | 10 MAYFLOWER CLOSE | Semi-detached |
| 2007-09-21 | £129,500 | 4 MAYFLOWER CLOSE | Semi-detached |
| 2007-07-17 | £138,000 | 32 MAYFLOWER CLOSE | Terraced |
| 2007-06-21 | £217,500 | 12 MAYFLOWER CLOSE | Terraced |
| 2006-11-16 | £185,000 | 38 MAYFLOWER CLOSE | Terraced |
| 2006-11-03 | £182,000 | 26 MAYFLOWER CLOSE | Terraced |
| 2006-08-21 | £185,000 | 22 MAYFLOWER CLOSE | Terraced |
| 2006-06-15 | £146,900 | 5 MAYFLOWER CLOSE | Terraced |
| 2005-12-09 | £180,000 | 11 MAYFLOWER CLOSE | Terraced |
| 2005-11-11 | £183,000 | 16 MAYFLOWER CLOSE | Terraced |
| 2005-02-24 | £145,000 | 15 MAYFLOWER CLOSE | Detached |
| 2004-09-24 | £140,000 | 3 MAYFLOWER CLOSE | Terraced |
| 2004-07-02 | £129,000 | 18 MAYFLOWER CLOSE | Terraced |
| 2004-01-02 | £169,500 | 26 MAYFLOWER CLOSE | Terraced |
| 2003-10-30 | £167,500 | 38 MAYFLOWER CLOSE | Terraced |
| 2003-06-30 | £165,950 | 1 MAYFLOWER CLOSE | Semi-detached |
| 2003-01-27 | £167,500 | 38 MAYFLOWER CLOSE | Terraced |
| 2002-11-25 | £159,000 | 16 MAYFLOWER CLOSE | Terraced |
| 2002-09-16 | £140,000 | 11 MAYFLOWER CLOSE | Terraced |
| 2002-07-19 | £134,000 | 30 MAYFLOWER CLOSE | Terraced |
| 2002-05-03 | £82,250 | 4 MAYFLOWER CLOSE | Semi-detached |
| 2001-12-19 | £100,000 | 28 MAYFLOWER CLOSE | Terraced |
| 2001-12-06 | £132,000 | 22 MAYFLOWER CLOSE | Terraced |
| 2001-12-06 | £132,000 | 22 MAYFLOWER CLOSE | Terraced |
| 2001-09-27 | £85,000 | 3 MAYFLOWER CLOSE | Terraced |
| 2001-09-07 | £128,000 | 24 MAYFLOWER CLOSE | Terraced |
| 2001-06-26 | £80,500 | 36 MAYFLOWER CLOSE | Terraced |
| 2000-09-06 | £50,000 | 2 MAYFLOWER CLOSE | Semi-detached |
| 2000-04-12 | £75,000 | 15 MAYFLOWER CLOSE | Detached |
| 2000-03-27 | £96,500 | 26 MAYFLOWER CLOSE | Terraced |
| 2000-02-09 | £72,000 | 20 MAYFLOWER CLOSE | Semi-detached |
| 2000-02-09 | £72,000 | 20 MAYFLOWER CLOSE | Semi-detached |
| 2000-01-14 | £94,000 | 1 MAYFLOWER CLOSE | Semi-detached |
| 1999-08-27 | £82,000 | 9 MAYFLOWER CLOSE | Terraced |
| 1999-02-12 | £52,000 | 8 MAYFLOWER CLOSE | Terraced |
| 1998-12-09 | £71,995 | 28 MAYFLOWER CLOSE | Terraced |
| 1998-06-19 | £64,950 | 32 MAYFLOWER CLOSE | Terraced |
| 1998-05-15 | £47,000 | 8 MAYFLOWER CLOSE | Terraced |
| 1998-02-12 | £84,000 | 12 MAYFLOWER CLOSE | Terraced |
| 1997-11-21 | £71,000 | 38 MAYFLOWER CLOSE | Terraced |
| 1997-07-02 | £53,500 | 18 MAYFLOWER CLOSE | Terraced |
| 1997-05-27 | £42,500 | 34 MAYFLOWER CLOSE | Flat |
| 1997-02-28 | £47,950 | 5 MAYFLOWER CLOSE | Terraced |
| 1997-01-31 | £64,500 | 30 MAYFLOWER CLOSE | Terraced |
| 1997-01-20 | £65,000 | 1 MAYFLOWER CLOSE | Semi-detached |
| 1995-03-21 | £120,000 | 15 MAYFLOWER CLOSE | Detached |
| 1995-01-19 | £60,000 | 2 MAYFLOWER CLOSE | Semi-detached |
90 recorded sales on SG4 8SW. Source: HM Land Registry Price Paid (© Crown copyright). Shown for this postcode only.
Nearest schools
| School | Distance | Phase | Ofsted |
|---|---|---|---|
| Codicote Church of England Primary School | 0.3 mi | Primary | Report card → |
| Oaklands Primary School | 1.5 mi | Primary | Good (2023) |
| Welwyn St Mary's Church of England Voluntary Aided Primary School | 1.6 mi | Primary | Report card → |
| Monk's Walk School | 2.1 mi | Secondary | Report card → |
| St Michael's Woolmer Green CofE VA Primary School | 2.1 mi | Primary | Report card → |
| Knebworth Primary and Nursery School | 2.4 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: BRIDGE COTTAGE SURGERY (1.4 mi) · KNEBWORTH & MARYMEAD PRACTICE (2.5 mi) · WHITWELL SURGERY (2.8 mi)
Nearest hospitals: NEW QEII HOSPITAL CDC (4.8 mi) · NEW QE2 HOSPITAL (4.8 mi) · QUEEN ELIZABETH I I HOSPITAL (4.8 mi)
Nearest listed buildings: 163 AND 165, HIGH STREET (Grade II) (0.1 mi) · 151-157, HIGH STREET (Grade II) (0.1 mi) · ROSEBANK (Grade II) (0.1 mi)
Nearest pharmacies: CODICOTE PHARMACY (0.1 mi) · BARNES PHARMACY (1.4 mi) · PHARMACY EXPRESS (2.5 mi)
Nearest stations: Knebworth (2.3 mi) · Welwyn North (2.4 mi) · Welwyn Garden City (3.4 mi)
Nearest supermarkets: Co-op Food (2.4 mi) · Co-operative Knightsfield (2.5 mi) · Tesco (3.0 mi)
Straight-line distance from the postcode. Source: NaPTAN (DfT).
Who lives here
- Median age
- 46
- One-person households
- 27%
- Households with children
- 28%
- Households
- 5,881
Owned 68% · Social rent 15% · Private rent 14%
Census 2021 (ONS), for SG4 8.
Recorded crime trend
Recorded crimes per month in SG4 8 (May 24–Apr 26, average 5/month). Hover a point to read the count. Source: Police.uk street-level data.
Flood risk
No modelled flood risk is recorded for SG4 8SW 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 | DistrictSG4 | SectorSG4 8 | PostcodeSG4 8SW |
|---|---|---|---|
| Average sold price | £573,519 | £603,213 | £172,389 |
| Population | 47,522 | 14,355 | — |
| Deprivation decile (1 = most deprived) | 8/10 | 8/10 | — |
| Crimes recorded | 130 | 5 | — |
| Schools | 19 | 5 | — |
| Flood risk | High | High | Low |
| Gigabit broadband | 68% | 40% | 100% |
| Superfast broadband | 92% | 84% | 100% |
— = no separate figure is published at that level. Most open data is published down to the sector (SG4 8); 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.
View the title document at HM Land Registry →Compare conveyancing quotes
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Report generated 2 July 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.