Postcode district report · August 2026

SL3, Slough

SL3 is the 2nd Hapiest of Slough's 3 postcode districts on the HPAI Swatch, which compares them with each other on prices, how the market is moving, energy efficiency and transport. SL3 also reaches into Windsor and Maidenhead and Buckinghamshire; these figures are for its homes in Slough.

Homes sold
227
in the 12 months to August 2026
Median price
£435,000
+1.2% on the year before
Price per m²
£5,362
median, homes with an EPC
Flats
23%
of homes sold

SL3 on the HPAI Swatch

Each tile ranks SL3 against the other postcode districts of Slough.

Price per m²£5,362/m² 1st of 3
Price change+1.2% 2nd of 3
Sales a year227 a year 2nd of 3
Sales change-26.3% 3rd of 3
Energy efficiency69 EPC score 1st of 3
Carbon3.1 t CO₂ a home 3rd of 3
Station nearby1.1 km 2nd of 3
Yellow the best in Slough Green above average Blue below average Purple weakest in Slough

Yellow is Hapi: the more yellow, the better SL3 compares with the rest of Slough. These colours compare postcode districts within Slough; Slough's own Swatch compares it with areas across England and Wales.

Slough's postcode districts, Hapiest first

#Postcode districtSwatchHomes soldMedian pricePrice change
1 SL2 165£395,000 +1.3%
2 SL3 227£435,000 +1.2%
3 SL1 326£373,000 -0.5%

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About these figures

Price per m²
Median price per square metre of homes sold in the last 12 months (homes with an EPC).
Price change
Median price in the last 12 months against the 12 months before.
Sales a year
Open-market sales in the last 12 months. More sales means a deeper, easier market.
Sales change
Sales in the 12 months to three months ago against the year before. The newest months are left out: Land Registry registers sales late.
Energy efficiency
Average EPC energy efficiency score of homes sold (higher is more efficient).
Carbon
Average carbon emissions of homes sold, tonnes a year. Lower is better.
Station nearby
Median distance from homes sold to the nearest railway station. Closer is better.

Open-market sales from HM Land Registry Price Paid Data in the 12 months to August 2026 (homes in Slough only); price per m², energy and carbon from the homes sold that have an Energy Performance Certificate. Postcode districts with fewer than 20 sales a year in Slough aren't ranked.