CM23 Postcode Data
Property data for the CM23 postcode district covering East Hertfordshire. 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 CM23 is £569,400 (median £547,500), based on 10 HM Land Registry transactions. Police UK recorded 228 crimes within a 1-mile radius in 2026-03. The average EPC rating across 135 certified properties is 92/100.
Headline pricing in CM23 is above the UK national average (England & Wales average ~£290k as of 2025). Stock is dominated by detached properties (6 of the last 10 sales). Energy efficiency here is stronger than the UK average (Band C/D territory).
Avg sale price
£569,400
10 sales
Median price
£547,500
Crime incidents
228
2026-03
Avg EPC score
92/100
135 certs
Recent sold prices
Latest 10 property sales in the CM23 area, sourced from HM Land Registry Price Paid Data.
detached
£619,833
6 sales
semi-detached
£493,750
4 sales
| Date | Address | Type | Price |
|---|---|---|---|
| Jan 2025 | 29, BALDWIN WAY, BISHOP'S STORTFORD | semi-detached | £525,000 |
| Dec 2024 | 27, BALDWIN WAY, BISHOP'S STORTFORD | semi-detached | £515,000 |
| Dec 2024 | 15, BALDWIN WAY, BISHOP'S STORTFORD | detached | £699,000 |
| Dec 2024 | 21, BALDWIN WAY, BISHOP'S STORTFORD | detached | £585,000 |
| Nov 2024 | 23, BALDWIN WAY, BISHOP'S STORTFORD | detached | £710,000 |
| Nov 2024 | 25, BALDWIN WAY, BISHOP'S STORTFORD | semi-detached | £400,000 |
| Oct 2024 | 17, BALDWIN WAY, BISHOP'S STORTFORD | detached | £700,000 |
| Oct 2024 | 13, BALDWIN WAY, BISHOP'S STORTFORD | detached | £560,000 |
| Sept 2024 | 31, BALDWIN WAY, BISHOP'S STORTFORD | semi-detached | £535,000 |
| Jul 2024 | 33, BALDWIN WAY, BISHOP'S STORTFORD | detached | £465,000 |
Crime in CM23
228 reported crimes within a 1-mile radius of the postcode centroid in 2026-03, from Police UK data.
Violent Crime
87
Anti Social Behaviour
47
Shoplifting
33
Public Order
12
Other Theft
11
Energy performance
Aggregate EPC stats from 135 recently-certified properties in the CM23 area.
Avg current score
92/100
Avg potential
92/100
Avg energy cost
£573/yr
Sample size
135
Rating distribution
A
91
B
38
C
6
D
0
E
0
F
0
G
0
Area information
- Local authority
- East Hertfordshire, Uttlesford
- Country
- England
- Wards
- Bishop's Stortford All Saints, Bishop's Stortford Central, Bishop's Stortford North
- Constituency
- Harlow
- Latitude
- 51.8725
- Longitude
- 0.1580
More for CM23
Typical property
What the typical CM23 property looks like
Area summary, buyer notes, researched facts
Sold prices tool
Full transaction history for CM23
HM Land Registry from 1995
Corporate freeholders
Companies registered in CM23
Live Companies House data + PSCs
EPC checker
Look up any CM23 address
Energy ratings + improvement options
Crime checker
Local breakdown for CM23
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 CM23 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.