Postcode Pulse

Postcode district · Free area page

CM23, East Hertfordshire

East Hertfordshire, East of England, England

  • England
  • Updated 23 Oct 2026, 22:26
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Centre of CM23. The circle is the 1 mile crime search radius.

Summary

Written by AI from the figures below

This report covers CM23, East Hertfordshire, England.Postcodes.io The median sale price in district CM23 over the last 12 months was £420,750 from 424 sales, which is 5.4% lower than the previous 12 months (£445,000 from 842 sales).HM Land Registry The Postcode Pulse flood risk score is 85 out of 100, the location is in Flood Zone 1, and no flood warnings or alerts are in force within 5 km.Environment Agency The Postcode Pulse safety score is 38 out of 100, and an average of 269 crimes and anti-social behaviour reports a month were recorded within 1 mile over the 3 months to August 2026.data.police.uk The Postcode Pulse price trend score is 37 out of 100, the energy efficiency score is 74 out of 100, and broadband data is not connected yet.HM Land RegistryEPC registerOfcom

AI-generated summary of the figures below. The data tables take precedence.

Median sale price (12 months)
£420,750
424 sales
Source: HM Land Registry
Crimes and ASB a month (1 mile)
269
Jun-Aug 2026
Source: data.police.uk
Flood zone
Zone 1
No warnings in force
Source: Environment Agency
Typical energy rating
Band C
59 certificates
Source: EPC register
Nearest station
0.8 km
Bishops Stortford Rail Station
Source: NaPTAN
Food businesses within ½ mile
359
Source: Food Standards Agency

Scores

Each out of 100. Higher is better for the people who live there.

How we score

Safety

38/100

269 crimes and anti-social behaviour reports a month within 1 mile (Jun-Aug 2026)

Show the numbers
Inputs to the safety score
Recorded crimes and anti-social behaviour807
Months of data3
Per month269
Severity-weighted crimes per km² per month35.2 per km² per month
Search radius1.6 km

Recorded street-level crime within the search radius, weighted by offence type (violence and robbery x2, ASB x0.5), per km² per month, placed on a log scale from 1 (scores 100) to 300 (scores 0).

  • Counts recorded crime by location, not risk to any individual; busy city centres score lower because of footfall.
  • Locations are anonymised to nearby map points by the police.

Confidence: high. Source: data.police.uk. How we score this

Flood risk

85/100

Flood Zone 1

Show the numbers
Inputs to the flood risk score
Flood Map for Planning zone1
Flood warning areas within 1 km1
Flood alert areas within 1 km3
Active warnings and alerts nearby0

Starts from the Environment Agency flood zone (Zone 1: 95, Zone 2: 60, Zone 3: 25), minus 10 if a flood warning area lies within 1 km (5 if only an alert area), minus 15 per active flood warning and 5 per active alert; a severe warning caps the score at 10.

  • Flood zones show the chance of river or sea flooding ignoring defences; they do not cover surface water or groundwater.
  • This is not a flood search. Use a professional search before buying.

Confidence: high. Source: Environment Agency. How we score this

Broadband

Not scored

Broadband data isn't connected to Postcode Pulse yet, so this part of the report is empty for now.

Energy efficiency

74/100

Median rating of 59 certificates: band C (74)

Show the numbers
Inputs to the energy efficiency score
Energy efficiency rating (SAP)74
EPC bandC
Based onmedian
Certificates used59

The SAP energy efficiency rating from the EPC (1-100, the number behind bands A-G): the property's own certificate when we can match the address, otherwise the median of the latest certificate for each property in the postcode.

  • Certificates last ten years and may predate later improvements.

Confidence: medium. Source: EPC register. How we score this

Price trend

37/100

Median sale price down 5.4% year on year in CM23

Show the numbers
Inputs to the price trend score
Change in median price-5.4%
Median price, last 12 months£420,750
Median price, previous 12 months£445,000
Sales, last 12 months424
Sales, previous 12 months842

50 + 2.5 x the percentage change in median sale price between the last 12 months and the 12 months before (so +20% scores 100 and -20% scores 0).

  • Measures recent price momentum, not value for money or affordability, and is not a forecast.
  • Medians move with the mix of homes sold as well as with prices.

Confidence: high. Source: HM Land Registry. How we score this

Amenities

99/100

359 food businesses, shops and school kitchens within 0.5 miles

Show the numbers
Inputs to the amenities score
Food businesses on the FSA register within the radius359
Radius805 m
Weighted count353.8
Restaurant cafe103
Other retail60
Takeaway32
Pub bar31
School college27
Childcare health care16
Supermarket14
Hotel accommodation7
Other6
Mobile caterer4

A weighted count of premises on the Food Standards Agency register within the radius (supermarkets x3, schools x2, cafés, restaurants, pubs and care settings x1, takeaways and other shops x0.5), scored as 100 x (1 - e^(-count / 80)).

  • The FSA register lists businesses that handle food, so it is a proxy for local amenities: parks, GP surgeries and gyms are not included.

Confidence: medium. Source: Food Standards Agency. How we score this

Transport

95/100

Bishops Stortford Rail Station 0.8 km away; 12 bus stops within 400 m

Show the numbers
Inputs to the transport score
Nearest railway station (Bishops Stortford Rail Station)823 m
Nearest metro or tram stop—
Bus stops within 400 m12

0.55 x a rapid-transit component (the better of: rail station 100 within 500 m falling to 0 at 4 km; metro/tram stop 100 within 500 m falling to 0 at 2 km) plus 0.45 x a bus component (12.5 points per stop within 400 m, up to 100).

  • NaPTAN lists stops, not how often services run.

Confidence: medium. Source: NaPTAN. How we score this

Planning freedom

Not scored

Planning constraints depend on the exact location, so they are in the full address report.

Go deeper on one address

Address reports add sold prices for the street and postcode, the property's energy certificate and the planning constraints at that exact spot.

  • Renters' report

    £1.99one-off

    What matters when you rent: bills, broadband, safety and getting around.

    • Energy rating for the address (and what it means for bills)
    • Broadband, crime, flood risk, amenities and transport
    • AI summary with sources, plus a PDF
    Get a renters' report

  • Full address report

    £3.99one-off

    Everything we know about one address, with the numbers behind every score.

    • Sold prices for the street, postcode and sector
    • Planning constraints: conservation areas, listed buildings, green belt
    • All eight scores with their inputs, plus a PDF
    Get the full report
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Area insights

Sold prices

Source: HM Land Registry

Score 37/100

£420,750

Median sale price (12 months) · 424 sales

Median sale price down 5.4% year on year in CM23

Show details

District CM23

Median, last 12 months
£420,750
Sales, last 12 months
424
Change on previous 12 months
-5.4%
Median over the period
£440,000
New builds
17%
Leasehold
20%
  • Detached (586)£625,000
  • Semi-detached (491)£450,000
  • Terraced (373)£375,000
  • Flat or maisonette (360)£260,000
2023202420252026
Median sale price by year
Show as a table
YearMedianSales
2023 (part year)£437,50018
2024£450,000695
2025£437,500804
2026 (part year)£422,000293

Data fetched 23 Oct 2026, 22:26.

Energy performance

Source: EPC register

Score 74/100

Band C

Typical energy rating · 59 certificates

Median rating of 59 certificates: band C (74)

Show details
Homes with a certificate
59
Median rating
Band C (74)
Band C or better
58%
  • Band A0
  • Band B7
  • Band C27
  • Band D12
  • Band E9
  • Band F4
  • Band G0

Pooled across 6 postcodes near the centre of the district. Private rentals generally need band E or better.

Data fetched 23 Oct 2026, 22:26.

Crime

Source: data.police.uk

Score 38/100

269

Crimes and ASB a month (1 mile) · Jun-Aug 2026

269 crimes and anti-social behaviour reports a month within 1 mile (Jun-Aug 2026)

Show details
Crimes a month (average)
269
Months covered
3 to August 2026
Police force
Hertfordshire Constabulary
  • Anti-social behaviour86.7
  • Violence and sexual offences72.7
  • Shoplifting32.3
  • Public order14.7
  • Other theft14
  • Vehicle crime12.7
  • Criminal damage and arson11.3
  • Burglary8.7
  • Robbery4.7
  • Drugs3.7

Crime locations on data.police.uk are anonymised: each crime is mapped to a nearby fixed point (the centre of a street, open space or similar), shown as 'on or near' that place, never to an exact address. Counts cover a 1-mile radius around the point and include anti-social behaviour.

Data fetched 23 Oct 2026, 13:27.

Flood risk

Source: Environment Agency

Score 85/100

Zone 1

Flood zone · No warnings in force

Flood Zone 1

Show details
Flood zone
Zone 1
Warnings in force nearby
0
Warning areas within 1 km
1

Flood Zone 1 (low probability of flooding from rivers or the sea)

Flood zones show the chance of river or sea flooding ignoring defences. This is not a flood search; check the GOV.UK long-term flood risk service before buying.

Data fetched 23 Oct 2026, 22:26.

Broadband

Source: Ofcom

Not connected yet

Broadband data isn't connected to Postcode Pulse yet, so this part of the report is empty for now.

Amenities

Source: Food Standards Agency

Score 99/100

359

Food businesses within ½ mile

359 food businesses, shops and school kitchens within 0.5 miles

Show details
Food businesses within the radius
359
Radius
805 m
Hygiene rated 4 or 5
96%
  • Restaurants and cafés103
  • Other shops60
  • Takeaways32
  • Pubs and bars31
  • Schools and colleges27
  • Childcare, health and care16
  • Supermarkets14
  • Hotels and guest houses7
  • Other6
  • Mobile caterers4

based on the nearest 300 of 359

From the Food Standards Agency register of food businesses, a proxy for everyday amenities.

Data fetched 23 Oct 2026, 22:26.

Public transport

Source: NaPTAN

Score 95/100

0.8 km

Nearest station · Bishops Stortford Rail Station

Bishops Stortford Rail Station 0.8 km away; 12 bus stops within 400 m

Show details
Nearest station
Bishops Stortford Rail Station
Distance
823 m
Bus stops within 400 m
12
ModeWithin 400 mWithin 800 mNearest
Bus stops1227North Street (25 m)
Railway stations00Bishops Stortford Rail Station (823 m)

NaPTAN lists stops and stations, not how often services run.

Data fetched 23 Oct 2026, 12:37.

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Sources and attribution

  • Postcode Pulse reports are information, not advice. They are not a survey, valuation, conservation search, flood search or legal advice.
  • Figures come from public datasets that can be incomplete or out of date. Check anything important with the original source or a professional before you rely on it.
  • Postcode-level figures describe the postcode or the area around it, not necessarily the individual property.