Postcode district report · August 2026

AL4, St Albans

AL4 is the 1st Hapiest of St Albans's 5 postcode districts on the HPAI Swatch, which compares them with each other on prices, how the market is moving, energy efficiency and transport.

Homes sold
298
in the 12 months to August 2026
Median price
£639,000
-3.5% on the year before
Price per m²
£6,934
median, homes with an EPC
Flats
15%
of homes sold

AL4 on the HPAI Swatch

Each tile ranks AL4 against the other postcode districts of St Albans.

Price per m²£6,934/m² 3rd of 5
Price change-3.5% 3rd of 5
Sales a year298 a year 3rd of 5
Sales change-6.0% 1st of 5
Energy efficiency69 EPC score 1st of 5
Carbon3.5 t CO₂ a home 1st of 5
Station nearby2.4 km 5th of 5
Yellow the best in St Albans Green above average Blue below average Purple weakest in St Albans

Yellow is Hapi: the more yellow, the better AL4 compares with the rest of St Albans. These colours compare postcode districts within St Albans; St Albans's own Swatch compares it with areas across England and Wales.

St Albans's postcode districts, Hapiest first

#Postcode districtSwatchHomes soldMedian pricePrice change
1 AL4 298£639,000 -3.5%
2 AL5 355£795,000 +3.2%
3 AL1 457£550,000 +3.8%
4 AL3 244£652,500 -6.3%
5 AL2 261£530,000 -3.6%

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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 St Albans 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 St Albans aren't ranked.