CM21 0DT
PostcodeA postcode in East Hertfordshire 009C, Much Hadham ward, East Hertfordshire.
This report describes the area around CM21 0DT, not any one home. Each figure is shown at the level it was published: the postcode, a 1 km square, the neighbourhood or the whole council, as its tag says.
Around CM21 0DT
- 2 crimes within 500 mAugust, down 50% on JulyEast Hertfordshire 009C: 52 a year per 1,000 peopleMap point
- Harlow Mill, 2.1 kmAbout 26 minutes on footExact point
- 1 school within 800 mNearest is 280 m awayExact point
- No property in CM21 0DT listed at risk of floodingFrom rivers or the sea, with flood defences, in the Environment Agency's assessmentPostcode
- England’s most deprived 50%This neighbourhood, East Hertfordshire 009CNeighbourhood
- £457,417 average priceFor the whole of East Hertfordshire, July 2026Council
- 1 GP practice within 1 kmNearest is 510 m awayPostcode
- No supermarkets within 1 kmNearest is 1.8 km awayExact point
- No gigabit broadband at CM21 0DTSuperfast for 100%. What can be ordered, January 2026Postcode
- Low road and rail noise at CM21 0DTRoad under 40 dB or not modelled, rail under 40 dB or not modelled (Lden, modelled for 2021)Postcode
- Not in a radon Affected AreaUnder 1% of homes in this 1 km square are estimated to be at or above the radon Action Level1 km grid
- 10.6 µg/m³ nitrogen dioxideModelled yearly average for this 1 km square, 20251 km grid
Schools near CM21 0DT
Within 2 km, nearest first| School | Distance | Latest Ofsted outcome |
|---|---|---|
| High Wych Church of England Primary School Primary. 63% met the expected standard at KS2 (2024/25) | 280 m 4 minutes on foot | School remains Good, November 2023 |
| Mandeville Primary School Primary. 77% met the expected standard at KS2 (2024/25) | 1.8 km 23 minutes on foot | Good (overall), February 2023 |
Distances are in a straight line. Councils and schools set catchments and admissions, which Open Index doesn’t map: the council’s schools pages. Ofsted outcomes are as published, each with its date; grades under different frameworks can’t be compared.
Recent sales near CM21 0DT
Latest sale at each postcode- £282,500Blacksmith Way, CM21 0NAJuly 2026, terraced, established, freehold40 m
- £819,500High Wych Lane, CM21 0JJJune 2024, detached, established, freehold80 m
- £600,000Mansfield, CM21 0JTAugust 2025, semi-detached, established, freehold90 m
- £482,000Broadfields, CM21 0HUAugust 2025, semi-detached, established, freehold130 m
- £890,000High Wych Road, CM21 0HXAugust 2023, detached, established, freehold130 m
- £450,000Mabeys Walk, CM21 0HNJanuary 2026, semi-detached, established, freehold190 m
- £600,000High Wych Lane, CM21 0JNJuly 2026, detached, established, freehold200 m
- £460,000High Wych Lane, CM21 0JLJuly 2025, semi-detached, established, freehold240 m
HM Land Registry sales at nearby postcodes, by street and postcode only, never a house number. Sales take weeks to be registered. Every sale on the map
Within 1 km of CM21 0DT
In a straight lineGP practices
- GARDENS AND JACOBS MEDICAL PARTNERSHIP510 m
The neighbourhood: East Hertfordshire 009C
Everything about East Hertfordshire 009CThe postcode district: CM21
Everything about CM21Your MP
- Josh DeanLabourMP for Hertford and Stortford
As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.
Where these figures come from
- Street-level crimeAugust 2026Map point
- Rail and Tube stations2024/25Exact point
- SchoolsExact point
- Flood risk by postcodeJune 2026Postcode
- English Indices of Deprivation 20252025Neighbourhood
- Average house priceJuly 2026Council
- GP practicesPostcode
- SupermarketsExact point
- Broadband by postcodeJanuary 2026Postcode
- Road and rail noise by postcode2021Postcode
- Radon potential1 km grid
- Nitrogen dioxide (NO2)20251 km grid
Counts, distances and walking times are worked out by Open Index from each layer’s published points and outlines, in a straight line from the postcode’s centre. Street names © OpenStreetMap contributors.