Postcode district report · August 2026

NN1, West Northamptonshire

NN1 is the 14th Hapiest of West Northamptonshire's 14 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
281
in the 12 months to August 2026
Median price
£205,000
-2.4% on the year before
Price per m²
£2,469
median, homes with an EPC
Flats
30%
of homes sold

NN1 on the HPAI Swatch

Each tile ranks NN1 against the other postcode districts of West Northamptonshire.

Price per m²£2,469/m² 12th of 12
Price change-2.4% 10th of 14
Sales a year281 a year 10th of 14
Sales change-15.8% 11th of 14
Energy efficiency65 EPC score 11th of 12
Carbon4.0 t CO₂ a home 10th of 12
Station nearby2.1 km 2nd of 11
Yellow the best in West Northamptonshire Green above average Blue below average Purple weakest in West Northamptonshire

Yellow is Hapi: the more yellow, the better NN1 compares with the rest of West Northamptonshire. These colours compare postcode districts within West Northamptonshire; West Northamptonshire's own Swatch compares it with areas across England and Wales.

West Northamptonshire's postcode districts, Hapiest first

#Postcode districtSwatchHomes soldMedian pricePrice change
1 MK19 95£380,000 +4.8%
2 NN7 355£340,000 +1.2%
3 NN13 306£347,500 +2.4%
4 NN11 483£275,000 +1.9%
5 NN3 737£270,000 +0.0%
6 NN4 581£300,000 -2.0%
7 NN12 386£341,000 -7.8%
8 NN5 493£262,000 -1.1%
9 LE16 21£620,000 +22.8%
10 NN6 306£360,000 -2.7%
11 NN2 432£245,000 +0.7%
12 OX17 122£381,000 -8.2%
13 CV23 43£345,000 -8.0%
14 NN1 281£205,000 -2.4%

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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 West Northamptonshire 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 West Northamptonshire aren't ranked.