CM21 9JN

• 26 crimes within 500 mAugust, up 4% on JulyEast Hertfordshire 011C: 53 a year per 1,000 peopleMap point
• Sawbridgeworth, 830 mAbout 10 minutes on footExact point
• 4 schools within 800 mNearest is 250 m awayExact point
• No property in CM21 9JN listed at risk of floodingFrom rivers or the sea, with flood defences, in the Environment Agency's assessmentPostcode
• England’s least deprived 20%This neighbourhood, East Hertfordshire 011CNeighbourhood
• £457,417 average priceFor the whole of East Hertfordshire, July 2026Council
• 1 GP practice within 1 kmNearest is 240 m awayPostcode
• 2 supermarkets within 1 kmNearest is 130 m awayExact point
• 82.8% can get gigabit broadband at CM21 9JNSuperfast for 100%. What can be ordered, January 2026Postcode
• Moderate road and rail noise at CM21 9JNRoad 60 dB, rail under 40 dB or not modelled (Lden, modelled for 2021)Postcode
• In a radon Affected Area, class 2 of 61% to 3% of homes in this 1 km square are estimated to be at or above the radon Action Level1 km grid
• 11.7 µg/m³ nitrogen dioxideModelled yearly average for this 1 km square, 20251 km grid

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.

• £280,000London Road, CM21 9JNMay 2026, terraced, established, freehold10 m
• £287,500London Road, CM21 9JJDecember 2025, terraced, established, freehold40 m
• £497,500New Street, CM21 9BAOctober 2024, detached, established, freehold60 m
• £545,000Farriers, CM21 9EWSeptember 2025, detached, established, freehold90 m
• £272,000Station Road, CM21 9QNOctober 2025, terraced, established, freehold100 m
• £465,000The Orchards, CM21 9BBMarch 2026, semi-detached, established, freehold100 m
• £185,000West Road, CM21 0DJMay 2025, flat or maisonette, established, leasehold110 m
• £300,000Walnut Cottages, CM21 9QJNovember 2025, terraced, established, freehold110 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

Your MP

• Josh DeanLabourMP for Hertford and Stortford

As of 18 October 2026, from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

• 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.