Postcode district report · August 2026

NP12, Caerphilly

NP12 is the 4th Hapiest of Caerphilly's 8 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
300
in the 12 months to August 2026
Median price
£205,000
+5.4% on the year before
Price per m²
£2,400
median, homes with an EPC
Flats
0%
of homes sold

NP12 on the HPAI Swatch

Each tile ranks NP12 against the other postcode districts of Caerphilly.

Price per m²£2,400/m² 3rd of 6
Price change+5.4% 3rd of 8
Sales a year300 a year 3rd of 8
Sales change-14.1% 6th of 8
Energy efficiency68 EPC score 3rd of 6
Carbon3.5 t CO₂ a home 2nd of 6
Station nearby2.0 km 6th of 6
Yellow the best in Caerphilly Green above average Blue below average Purple weakest in Caerphilly

Yellow is Hapi: the more yellow, the better NP12 compares with the rest of Caerphilly. These colours compare postcode districts within Caerphilly; Caerphilly's own Swatch compares it with areas across England and Wales.

Caerphilly's postcode districts, Hapiest first

#Postcode districtSwatchHomes soldMedian pricePrice change
1 CF83 595£228,000 +4.8%
2 NP11 350£170,000 +0.0%
3 CF46 53£210,000 +10.5%
4 NP12 300£205,000 +5.4%
5 CF82 221£200,000 +1.3%
6 CF81 119£150,000 +5.6%
7 NP24 34£107,500 -2.3%
8 NP22 34£122,500 -6.8%

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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 Caerphilly 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 Caerphilly aren't ranked.