SL1 1GZ
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Property report — SL1 1GZ
Open-data due diligence for SL1 1GZ and the area around it.
SL1 1GZ in brief: 61 recorded sales (£162,750–£500,000) · no modelled flood risk · 6 schools nearby.
What scope is each figure? Sold sales, broadband and flood risk are for SL1 1GZ itself. Where open data isn't published that finely (population, crime, schools), we show the SL1 1 sector — each figure below is tagged with its scope.
Avg sold price
£315,781
Population
15,824
Crimes recorded
127
Schools
1
Flood risk
None modelled
Gigabit broadband
88%
Sold-price trend (1995–2026)
Annual sold price in SL1 1, 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 (16 sales so far). Hover a point for both figures. Source: HM Land Registry Price Paid.
Sold prices on this postcode
| Date | Price | Address | Type |
|---|---|---|---|
| 2024-03-26 | £187,500 | FLAT 11, 1 WILLIAM STREET | Flat |
| 2023-10-30 | £202,500 | FLAT 28, 1 WILLIAM STREET | Flat |
| 2023-10-19 | £199,950 | FLAT 16, 1 WILLIAM STREET | Flat |
| 2023-06-23 | £232,750 | FLAT 54, 1 WILLIAM STREET | Flat |
| 2023-06-22 | £224,000 | FLAT 44, 1 WILLIAM STREET | Flat |
| 2023-03-31 | £225,750 | FLAT 57, 1 WILLIAM STREET | Flat |
| 2023-03-31 | £222,250 | FLAT 46, 1 WILLIAM STREET | Flat |
| 2023-03-31 | £211,750 | FLAT 18, 1 WILLIAM STREET | Flat |
| 2023-03-30 | £203,000 | FLAT 25, 1 WILLIAM STREET | Flat |
| 2023-03-06 | £199,950 | FLAT 15, 1 WILLIAM STREET | Flat |
| 2023-02-07 | £220,500 | FLAT 34, 1 WILLIAM STREET | Flat |
| 2022-12-22 | £325,000 | FLAT 10, 1 WILLIAM STREET | Flat |
| 2022-12-20 | £203,000 | FLAT 26, 1 WILLIAM STREET | Flat |
| 2022-12-16 | £162,750 | FLAT 31, 1 WILLIAM STREET | Flat |
| 2022-12-16 | £236,250 | FLAT 60, 1 WILLIAM STREET | Flat |
| 2022-11-30 | £199,950 | FLAT 13, 1 WILLIAM STREET | Flat |
| 2022-11-03 | £217,000 | FLAT 36, 1 WILLIAM STREET | Flat |
| 2022-10-28 | £227,500 | FLAT 42, 1 WILLIAM STREET | Flat |
| 2022-10-28 | £178,500 | FLAT 63, 1 WILLIAM STREET | Flat |
| 2022-10-27 | £360,000 | FLAT 58, 1 WILLIAM STREET | Flat |
| 2022-10-20 | £320,000 | FLAT 24, 1 WILLIAM STREET | Flat |
| 2022-10-20 | £171,500 | FLAT 55, 1 WILLIAM STREET | Flat |
| 2022-10-14 | £166,250 | FLAT 39, 1 WILLIAM STREET | Flat |
| 2022-10-07 | £166,250 | FLAT 40, 1 WILLIAM STREET | Flat |
| 2022-09-30 | £213,500 | FLAT 30, 1 WILLIAM STREET | Flat |
| 2022-09-28 | £164,500 | FLAT 35, 1 WILLIAM STREET | Flat |
| 2022-09-09 | £166,250 | FLAT 43, 1 WILLIAM STREET | Flat |
| 2022-09-02 | £246,750 | FLAT 62, 1 WILLIAM STREET | Flat |
| 2022-09-02 | £327,500 | FLAT 56, 1 WILLIAM STREET | Flat |
| 2022-09-02 | £168,000 | FLAT 47, 1 WILLIAM STREET | Flat |
| 2022-08-26 | £168,000 | FLAT 45, 1 WILLIAM STREET | Flat |
| 2022-08-08 | £195,000 | FLAT 2, 1 WILLIAM STREET | Flat |
| 2022-08-05 | £168,000 | FLAT 51, 1 WILLIAM STREET | Flat |
| 2022-07-29 | £232,750 | FLAT 61, 1 WILLIAM STREET | Flat |
| 2022-07-29 | £327,000 | FLAT 22, 1 WILLIAM STREET | Flat |
| 2022-07-22 | £166,250 | FLAT 41, 1 WILLIAM STREET | Flat |
| 2022-07-21 | £218,750 | FLAT 53, 1 WILLIAM STREET | Flat |
| 2022-07-21 | £166,250 | FLAT 37, 1 WILLIAM STREET | Flat |
| 2022-07-15 | £162,750 | FLAT 29, 1 WILLIAM STREET | Flat |
| 2022-07-15 | £162,750 | FLAT 23, 1 WILLIAM STREET | Flat |
| 2022-07-01 | £240,000 | FLAT 33, 1 WILLIAM STREET | Flat |
| 2022-05-27 | £200,000 | FLAT 14, 1 WILLIAM STREET | Flat |
| 2022-05-26 | £335,000 | FLAT 52, 1 WILLIAM STREET | Flat |
| 2022-04-08 | £198,000 | FLAT 4, 1 WILLIAM STREET | Flat |
| 2022-03-04 | £234,000 | FLAT 17, 1 WILLIAM STREET | Flat |
| 2022-02-18 | £300,000 | FLAT 6, 1 WILLIAM STREET | Flat |
| 2022-01-21 | £201,152 | FLAT 1, 1 WILLIAM STREET | Flat |
| 2022-01-14 | £225,000 | FLAT 5, 1 WILLIAM STREET | Flat |
| 2021-12-23 | £225,000 | FLAT 7, 1 WILLIAM STREET | Flat |
| 2021-12-16 | £235,000 | FLAT 21, 1 WILLIAM STREET | Flat |
| 2021-12-10 | £230,000 | FLAT 9, 1 WILLIAM STREET | Flat |
| 2021-11-03 | £245,000 | FLAT 49, 1 WILLIAM STREET | Flat |
| 2021-08-27 | £195,000 | FLAT 3, 1 WILLIAM STREET | Flat |
| 2021-08-20 | £250,000 | FLAT 48, 1 WILLIAM STREET | Flat |
| 2021-08-20 | £325,000 | FLAT 12, 1 WILLIAM STREET | Flat |
| 2021-08-20 | £240,000 | FLAT 11, 1 WILLIAM STREET | Flat |
| 2021-07-01 | £242,000 | FLAT 32, 1 WILLIAM STREET | Flat |
| 2021-06-17 | £240,000 | FLAT 20, 1 WILLIAM STREET | Flat |
| 2021-05-28 | £245,000 | FLAT 8, 1 WILLIAM STREET | Flat |
| 2021-05-21 | £358,000 | FLAT 64, 1 WILLIAM STREET | Flat |
| 2021-03-03 | £500,000 | FLAT 1, 1 WILLIAM STREET | Other |
61 recorded sales on SL1 1GZ. Source: HM Land Registry Price Paid (© Crown copyright). Shown for this postcode only.
Nearest schools
| School | Distance | Phase | Ofsted |
|---|---|---|---|
| Slough and Eton Church of England Business and Enterprise College | 0.5 mi | Secondary | Report card → |
| St Mary's Church of England Primary School | 0.5 mi | Primary | Report card → |
| James Elliman Academy | 0.6 mi | Primary | Report card → |
| Grove Academy | 0.7 mi | All-through | Inadequate (2022) |
| Iqra Slough Islamic Primary School | 0.7 mi | Primary | Outstanding (2023) |
| Willow Primary School | 0.8 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: HERSCHEL MEDICAL CENTRE (0.3 mi) · CHAPEL MEDICAL CENTRE (0.3 mi) · CROSBY HOUSE SURGERY (0.6 mi)
Nearest hospitals: UPTON HOSPITAL (0.3 mi) · UPTON COMMUNITY HOSPITAL (0.3 mi) · WEXHAM PARK HOSPITAL (1.8 mi)
Nearest listed buildings: Church of Our Lady Immaculate and St. Ethelbert (Grade II) (0.1 mi) · St. Ethelbert's Presbytery (Grade II) (0.1 mi) · SLOUGH TOWN WAR MEMORIAL IN CHURCHYARD OF ST MARY'S CHURCH (Grade II) (0.2 mi)
Nearest pharmacies: THEONLINECHEMIST.UK LTD (0.0 mi) · BOOTS (0.2 mi) · TESCO INSTORE PHARMACY (0.2 mi)
Nearest stations: Slough (0.2 mi) · Windsor & Eton Riverside (1.7 mi) · Windsor & Eton Central (1.9 mi)
Nearest supermarkets: Food Plus (0.1 mi) · Tesco Extra (0.2 mi) · Tani Sklep (0.4 mi)
Straight-line distance from the postcode. Source: NaPTAN (DfT).
Who lives here
- Median age
- 34
- One-person households
- 29%
- Households with children
- 40%
- Households
- 5,648
Owned 33% · Social rent 15% · Private rent 50%
Census 2021 (ONS), for SL1 1.
Recorded crime trend
Recorded crimes per month in SL1 1 (May 24–Apr 26, average 114/month). Hover a point to read the count. Source: Police.uk street-level data.
Flood risk
No modelled flood risk is recorded for SL1 1GZ 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 | DistrictSL1 | SectorSL1 1 | PostcodeSL1 1GZ |
|---|---|---|---|
| Average sold price | £520,526 | £315,781 | £229,197 |
| Population | 104,663 | 15,824 | — |
| Deprivation decile (1 = most deprived) | 5/10 | 3/10 | — |
| Crimes recorded | 802 | 127 | — |
| Schools | 29 | 1 | — |
| Flood risk | High | Low | Low |
| Gigabit broadband | 92% | 88% | 100% |
| Superfast broadband | 97% | 98% | 100% |
— = no separate figure is published at that level. Most open data is published down to the sector (SL1 1); 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
You've done the research — now the legal bit. Compare quotes from SRA/CLC-regulated conveyancers for SL1 1GZ.
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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.