Postcode district report · August 2026

NN18, North Northamptonshire

NN18 is the 8th Hapiest of North Northamptonshire's 12 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
327
in the 12 months to August 2026
Median price
£222,000
+0.9% on the year before
Price per m²
£2,587
median, homes with an EPC
Flats
6%
of homes sold

NN18 on the HPAI Swatch

Each tile ranks NN18 against the other postcode districts of North Northamptonshire.

Price per m²£2,587/m² 11th of 12
Price change+0.9% 4th of 12
Sales a year327 a year 7th of 12
Sales change-11.5% 8th of 12
Energy efficiency73 EPC score 6th of 12
Carbon3.0 t CO₂ a home 6th of 12
Station nearby2.2 km 5th of 12
Yellow the best in North Northamptonshire Green above average Blue below average Purple weakest in North Northamptonshire

Yellow is Hapi: the more yellow, the better NN18 compares with the rest of North Northamptonshire. These colours compare postcode districts within North Northamptonshire; North Northamptonshire's own Swatch compares it with areas across England and Wales.

North Northamptonshire's postcode districts, Hapiest first

#Postcode districtSwatchHomes soldMedian pricePrice change
1 NN14 605£280,000 +0.0%
2 PE8 161£385,000 +1.3%
3 NN17 332£230,000 +2.2%
4 NN15 508£262,000 +0.2%
5 NN9 411£244,000 -4.3%
6 NN10 516£245,000 -2.0%
7 LE16 41£400,000 +1.3%
8 NN18 327£222,000 +0.9%
9 NN8 481£235,000 -3.4%
10 NN6 113£325,000 +0.3%
11 NN29 158£285,000 -1.7%
12 NN16 282£200,000 -4.8%

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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 North 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 North Northamptonshire aren't ranked.