Postcode district report · August 2026

HA3, Harrow

HA3 is the 2nd Hapiest of Harrow'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. HA3 also reaches into Brent; these figures are for its homes in Harrow.

Homes sold
210
in the 12 months to August 2026
Median price
£546,250
+3.6% on the year before
Price per m²
£5,645
median, homes with an EPC
Flats
21%
of homes sold

HA3 on the HPAI Swatch

Each tile ranks HA3 against the other postcode districts of Harrow.

Price per m²£5,645/m² 5th of 6
Price change+3.6% 1st of 6
Sales a year210 a year 4th of 6
Sales change-13.1% 2nd of 6
Energy efficiency64 EPC score 5th of 6
Carbon4.0 t CO₂ a home 3rd of 6
Station nearby1.0 km 5th of 6
Yellow the best in Harrow Green above average Blue below average Purple weakest in Harrow

Yellow is Hapi: the more yellow, the better HA3 compares with the rest of Harrow. These colours compare postcode districts within Harrow; Harrow's own Swatch compares it with areas across England and Wales.

Harrow's postcode districts, Hapiest first

#Postcode districtSwatchHomes soldMedian pricePrice change
1 HA2 256£547,500 +0.5%
2 HA7 228£588,500 -1.9%
2 HA3 210£546,250 +3.6%
4 HA8 82£530,000 -0.9%
5 HA1 193£420,000 -1.9%
6 HA5 225£725,000 -2.0%

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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 Harrow 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 Harrow aren't ranked.