Postcode district report · August 2026

AL7, Welwyn Hatfield

AL7 is the 1st Hapiest of Welwyn Hatfield's 6 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
344
in the 12 months to August 2026
Median price
£396,000
+1.5% on the year before
Price per m²
£4,865
median, homes with an EPC
Flats
30%
of homes sold

AL7 on the HPAI Swatch

Each tile ranks AL7 against the other postcode districts of Welwyn Hatfield.

Price per m²£4,865/m² 4th of 6
Price change+1.5% 1st of 6
Sales a year344 a year 1st of 6
Sales change-4.9% 1st of 6
Energy efficiency72 EPC score 1st of 6
Carbon2.6 t CO₂ a home 1st of 6
Station nearby1.7 km 5th of 6
Yellow the best in Welwyn Hatfield Green above average Blue below average Purple weakest in Welwyn Hatfield

Yellow is Hapi: the more yellow, the better AL7 compares with the rest of Welwyn Hatfield. These colours compare postcode districts within Welwyn Hatfield; Welwyn Hatfield's own Swatch compares it with areas across England and Wales.

Welwyn Hatfield's postcode districts, Hapiest first

#Postcode districtSwatchHomes soldMedian pricePrice change
1 AL7 344£396,000 +1.5%
2 AL8 145£510,000 -1.4%
3 AL9 103£580,000 +0.9%
4 AL10 215£365,000 -1.4%
5 AL6 87£675,000 +0.0%
6 EN6 64£675,000 -8.6%

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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 Welwyn Hatfield 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 Welwyn Hatfield aren't ranked.