CM20 area guide
House prices, recent sales, crime and schools for the CM20 postcode district in East Hertfordshire. Free to read, from official open data. For one address in detail, run a full property report.
East Hertfordshire · 2026-08 (UK HPI)
Land Registry Price Paid
Street-level crime at the district centre
Ofsted rated, within one mile
What the data says about CM20
The average home across East Hertfordshire is worth about £455,973 (UK House Price Index, 2026-08), and prices have risen 1.9% over the last year.
Of 541 energy certificates sampled across 12 postcodes in CM20, band C is the most common, and 44% of homes sit below band C — the point at which most lenders' green mortgage deals and future rental rules bite.
Police recorded 2,796 crimes around the centre of CM20 in the six months to 2026-09, most often violence and sexual offences (1060).
There are 5 schools rated Good or Outstanding by Ofsted within a mile of CM20 in East Hertfordshire, including Freshwaters Primary Academy.
The district covers the Bush Fair, Hunsdon, Latton Bush & Stewards, Little Parndon & Town Centre ward areas.
Sample of 541 energy certificates from 12 postcodes in CM20, taken from the government energy performance register, most recent lodged 2026. Indicative of the district rather than a full census.
Prices changed +1.9% over the last year in East Hertfordshire.
Street-level crime from data.police.uk, six months to 2026-09.
Primary
- Freshwaters Primary AcademyNot rated · 0.2 mi
- St Alban's Catholic AcademyNot rated · 0.3 mi
- The Downs Primary School and NurseryNot rated · 0.4 mi
- Pemberley AcademyNot rated · 0.6 mi
- Cooks Spinney Primary Academy and NurseryNot rated · 0.7 mi
Secondary
- Burnt Mill AcademyGood · 0.2 mi
- Harlow CollegeNot rated · 0.4 mi
- Bmat Stem AcademyGood · 0.4 mi
- St Mark's West Essex Catholic SchoolGood · 0.8 mi
- Harlow Fields School and CollegeNot rated · 1.1 mi
Bush Fair · Hunsdon · Latton Bush & Stewards · Little Parndon & Town Centre · Mark Hall · Much Hadham · Netteswell · Old Harlow · Passmores · Sawbridgeworth
Common questions about CM20
What is the average house price in CM20?
The UK House Price Index puts the average home in East Hertfordshire at £455,973 as of 2026-08.
How much does each property type cost in CM20?
Detached £878,608, semi-detached £525,827, terraced £415,302, flats £249,320, based on the UK House Price Index for East Hertfordshire.
Is CM20 a safe area?
Police recorded 2,796 crimes near the centre of CM20 in the six months to 2026-09. The most common category was violence and sexual offences with 1060 reports. Crime is recorded at street level, so figures vary street to street within the same district.
What EPC rating do homes in CM20 usually have?
Band C is the most common rating in our sample of 541 certificates from CM20, with 44% of homes rated below band C. A full property report shows the exact certificate, running costs and recommended improvements for one address.
What are the schools like near CM20?
5 schools within a mile of the CM20 district centre are rated Good or Outstanding by Ofsted. Nearby secondaries include Burnt Mill Academy. Catchment areas are set by the local authority and can change year to year.
Where does this CM20 data come from?
HM Land Registry Price Paid Data and the UK House Price Index for prices, the government's energy performance register for EPC bands, data.police.uk for crime, Get Information About Schools and Ofsted for schools, and ONS postcode geography. All are published under the Open Government Licence v3.0.
A full report covers the energy certificate, sale history and valuation, council tax band and bill, flood and crime risk, schools, transport and neighbourhood data for a single property.
Search an addressMore on CM20
Nearby CM postcode districts
Sources: HM Land Registry Price Paid Data and UK House Price Index, ONS postcode geography, data.police.uk, Get Information About Schools and Ofsted. Contains public sector information licensed under the Open Government Licence v3.0.