Area guide
Everything you need to know about buying property in the SL4 postcode area, covering Windsor and surrounding areas. All price data sourced from HM Land Registry — updated July 2026.
Average price
£403,534
Median price
£320,000
5-year trend
+36.8%
Total sales
24,421
The SL4 area has 1,026 individual postcodes with 24,421 registered sales. Prices are broadly in line with the national average, with the largest concentration in Windsor. The five-year price movement is +36.8%.
SL4 averages £403,534, placing it in the upper-mid range. This tier often attracts a mix of professionals, families and investors, with prices broadly in line with the national average. The dataset includes 24,421 recorded sales across 1,026 postcodes.
The five-year price trend in SL4 is +36.8%, significantly outpacing many other areas. This level of growth may reflect improving local amenities, transport links or broader regeneration.
SL4 3GZ
£274,119 avg · 154 sales
SL4 3QR
£387,547 avg · 151 sales
SL4 3LE
£224,153 avg · 146 sales
SL4 5DX
£270,362 avg · 136 sales
SL4 5EU
£254,990 avg · 136 sales
SL4 5BU
£342,093 avg · 127 sales
SL4 3TN
£599,987 avg · 126 sales
SL4 3EN
£236,974 avg · 123 sales
SL4 5BP
£326,197 avg · 123 sales
This SL4 area guide is based on HM Land Registry Price Paid Data, covering registered residential property sales in England and Wales from January 1995 onwards. All figures are historical sold prices, not current valuations or asking prices.
Data last updated: July 2026 · View methodology
The average sold price in the SL4 postcode area is £403,534, based on 24,421 HM Land Registry transactions. The largest town in this area is Windsor.
Properties in SL4 average £403,534, which is broadly in line with the national average of £396,803 for England and Wales.
The median price (£320,000) is 20.7% below the average (£403,534), suggesting a mix of property types or a few high-value sales pulling the mean upward. This is common in areas with both affordable and premium housing.
Prices in SL4 have moved +36.8% over five years, reflecting broader UK house price growth. The large sample size gives confidence in this trend.
No. All figures on this page are historical completed sale prices from HM Land Registry Price Paid Data. They are not current valuations, estate agent asking prices, or financial advice. Always seek professional advice before making property decisions.
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