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Postcode District

SL4

WINDSOR

Berkshire, South East, England

View summary

SL4 is the postcode district for WINDSOR, located in Berkshire, South East.

Avg price £705,074
1yr change ▼ 23.1%
Crime 18% below avg
Schools 0 Outstanding
Updated 2026-03
BUS
Average House Price

£705,074

▼ 23.1% vs last year

This area National avg £287K

146% above national avg

Crime Rate

66.6/1,000

This area National avg 81.3/1,000

18% below national avg

Schools (Ofsted)

30 schools

Broadband Speed

314 Mbps

Property Prices in SL4

Source: HM Land Registry Price Paid Data

The average property price in SL4 is £705,074, which is 20% above the Berkshire average of £585,928.

Properties in SL4 cost 145.7% more than the England and Wales average of £287,000.

House prices in SL4 have fallen 23.1% over the past 12 months and risen 0.0% over five years.

Explore Berkshire postcodes or read the Berkshire house prices guide →

Average Price by Property Type

Type Average Price Sales (12m)
Detached £983,706 258
Semi-detached £600,853 391
Terraced £580,132 549
Flat £368,687 493
All types £705,074 1808

5-Year Price History

£592K £637K £681K £725K £770K 2023 2024 2025

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Crime & Safety in SL4

Source: data.police.uk (rolling 12 months)

With 66.6 recorded crimes per 1,000 residents, SL4 has a crime rate 18% below the national average of 81.3 per 1,000.

See how SL4 compares: safest areas in England & Wales →

Crime by Type vs National Average

Violent crime
22.6 per 1,000 (avg: 22.1 per 1,000)
Burglary
2.4 per 1,000 (avg: 6.8 per 1,000)
Vehicle crime
4.2 per 1,000 (avg: 8.4 per 1,000)
Antisocial behaviour
7.7 per 1,000 (avg: 16.2 per 1,000)
Other theft
15.4 per 1,000 (avg: 9.5 per 1,000)
This area
National average

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Schools in SL4

Source: DfE Get Information About Schools / Ofsted

SL4 has 30 schools within or near its boundaries, including 9 rated Good by Ofsted.

How Ofsted ratings affect house prices →

Nearest Schools

School Type Ofsted Distance
The Lawns Nursery School Nursery Not inspected mi
King's Court First School Primary Good mi
Hilltop First School Primary Good mi
Cranbourne Primary School Primary Not inspected mi
Homer First School and Nursery Primary Not inspected mi

0

Outstanding

9

Good

1

Requires improvement

0

Inadequate

Demographics

Source: ONS Census 2021

167,359

Population

57

Median Age

29%

Owner-Occupied

76%

Economically Active

Tenure Type

Owner-occupied
29.0%
Private rent
29.0%
Social rent
20.0%

Broadband & Connectivity

Source: Ofcom Connected Nations

Average broadband download speeds in SL4 are 314.0 Mbps, with 99% of premises having access to superfast broadband and 90% with full fibre (FTTP) connectivity.

How broadband speeds affect house prices →

314.0 Mbps

Avg Download

57.0 Mbps

Avg Upload

93%

Superfast Coverage

78%

Ultrafast Coverage

0%

Full Fibre (FTTP)

Council Tax

Source: Valuation Office Agency

Council tax in SL4 is collected by Slough Council. The Band D rate is £2,370/year.

Band A
8.0%
Band B
14.0%
Band C
25.0%
Band D
22.0%
Band E
16.0%
Band F
9.0%
Band G
5.0%
Band H
1.0%

Area Summary

SL

SL4 — WINDSOR

Area Summary

SL4 (WINDSOR) offers above-average property prices (£705,074, 146% above national average), low crime (18% below national average), 30 nearby schools, and excellent broadband (314 Mbps average).

Prices

Above avg

Safety

Low crime

Schools

Weak

Broadband

Good

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Frequently Asked Questions about SL4 WINDSOR

What is the average house price in SL4 WINDSOR?
The average house price in SL4 (WINDSOR) is £705,074, based on 1808 residential sales in the past 12 months. This is 146% above the national average of £287,000. Prices have fallen by 23.1% over the past year.
Is SL4 WINDSOR a safe area to live?
Crime in SL4 is close to the national average at 66.6 crimes per 1,000 residents. The most common crime types recorded are violent crime (22.6 per 1,000) and antisocial behaviour (7.7 per 1,000). Crime figures are sourced from data.police.uk rolling 12-month data.
What is the population of SL4 WINDSOR?
The population of SL4 (WINDSOR) is approximately 167,359 (ONS Census 2021). The median age is 57 years. 29% of homes are owner-occupied, 29% are privately rented, and 20% are social housing.
How fast is broadband in SL4?
The average broadband download speed in SL4 is 314 Mbps. Superfast broadband (30 Mbps+) is available to 93% of premises, ultrafast to 78%, and full-fibre (FTTP) to 0%. Source: Ofcom Connected Nations.
What are schools like in SL4 WINDSOR?
There are 30 schools in or near SL4. 30% are rated Good or Outstanding by Ofsted — 0 Outstanding and 9 Good. 1 school requires improvement.

Nearby Postcodes

Compare areas →

SL3

SLOUGH

£539K

▼ 11.1% YoY

SL5

ASCOT

£1068K

▲ 21.8% YoY

SL6

MAIDENHEAD

£672K

▼ 16.6% YoY

Compare SL4 with nearby areas

SL4 vs SL3 SL4 vs SL5 SL4 vs SL6

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