NN3 Postcode Data
Property data for the NN3 postcode district covering North Northamptonshire. Sold prices, crime statistics, energy performance, and demographic insights, all from HM Land Registry, Police UK, and the EPC Register.
Quick answer
The average sale price in NN3 is £335,719 (median £344,750), based on 50 HM Land Registry transactions. Police UK recorded 265 crimes within a 1-mile radius in 2026-03. The average EPC rating across 100 certified properties is 63/100.
Headline pricing in NN3 is broadly in line with the UK national average (England & Wales average ~£290k as of 2025). Stock is dominated by detached properties (34 of the last 50 sales). Energy efficiency here is weaker than average (expect higher running costs and lower mortgage-affordability scores from green lenders).
Avg sale price
£335,719
50 sales
Median price
£344,750
Crime incidents
265
2026-03
Avg EPC score
63/100
100 certs
Recent sold prices
Latest 30 property sales in the NN3 area, sourced from HM Land Registry Price Paid Data.
detached
£341,970
34 sales
semi-detached
£318,091
11 sales
terraced
£332,000
5 sales
| Date | Address | Type | Price |
|---|---|---|---|
| Sept 2025 | 22, HILLCREST AVENUE, NORTHAMPTON | semi-detached | £432,500 |
| Sept 2025 | HARVEST HOUSE, 11, CUMBERLAND CLOSE, NORTHAMPTON | semi-detached | £365,000 |
| Jun 2025 | 8, CUMBERLAND CLOSE, NORTHAMPTON | detached | £410,000 |
| Jun 2025 | 4, CUMBERLAND CLOSE, NORTHAMPTON | detached | £406,000 |
| May 2025 | 7, HILLCREST AVENUE, NORTHAMPTON | detached | £612,500 |
| Sept 2024 | 7, CUMBERLAND CLOSE, NORTHAMPTON | detached | £400,000 |
| Jun 2023 | 18, HILLCREST AVENUE, NORTHAMPTON | terraced | £380,000 |
| Apr 2023 | 2A, HILLCREST AVENUE, NORTHAMPTON | detached | £400,000 |
| Nov 2022 | 3, CUMBERLAND CLOSE, NORTHAMPTON | detached | £355,000 |
| Mar 2022 | 5, HILLCREST AVENUE, NORTHAMPTON | detached | £522,500 |
| Jun 2021 | 17, HILLCREST AVENUE, NORTHAMPTON | semi-detached | £370,000 |
| Apr 2021 | THE DAIRY, 12, CUMBERLAND CLOSE, NORTHAMPTON | terraced | £290,000 |
| Mar 2021 | 16, HILLCREST AVENUE, NORTHAMPTON | semi-detached | £385,000 |
| Mar 2021 | HARVEST HOUSE, 11, CUMBERLAND CLOSE, NORTHAMPTON | semi-detached | £295,000 |
| Sept 2020 | 7, HILLCREST AVENUE, NORTHAMPTON | detached | £550,000 |
Crime in NN3
265 reported crimes within a 1-mile radius of the postcode centroid in 2026-03, from Police UK data.
Violent Crime
91
Anti Social Behaviour
62
Vehicle Crime
27
Criminal Damage Arson
21
Drugs
9
Energy performance
Aggregate EPC stats from 100 recently-certified properties in the NN3 area.
Avg current score
63/100
Avg potential
79/100
Avg energy cost
£1,310/yr
Sample size
100
Rating distribution
A
0
B
11
C
19
D
45
E
24
F
1
G
0
Area information
- Local authority
- North Northamptonshire, West Northamptonshire
- Country
- England
- Wards
- Abington & Phippsville, Billing, Blackthorn & Rectory Farm
- Constituency
- Daventry
- Latitude
- 52.2641
- Longitude
- -0.8423
More for NN3
Typical property
What the typical NN3 property looks like
Area summary, buyer notes, researched facts
Council tax
North Northamptonshire 2025/26 rates
All bands, monthly cost, discounts
Sold prices tool
Full transaction history for NN3
HM Land Registry from 1995
Corporate freeholders
Companies registered in NN3
Live Companies House data + PSCs
EPC checker
Look up any NN3 address
Energy ratings + improvement options
Crime checker
Local breakdown for NN3
Police UK monthly data
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Get a Property ReportData sources & methodology
Sold prices: HM Land Registry Price Paid Data, the official UK government records updated monthly. Sample uses the 30 most recent registered transactions in the postcode area.
Crime: Police UK street-level crime data. Counts cover a 1-mile radius from the NN3 postcode centroid for the most recent month available (typically 2 months behind).
EPC: opendatacommunities.org, the official UK Energy Performance Certificate register. Aggregate stats from up to 30 most recent certificates in the postcode.
Area data: postcodes.io, open data from the Office for National Statistics.