CM21 0LP East Hertfordshire
Live postcode, introduced January 1980. Ward: Much Hadham. Region: East of England.
Streets
- Chandlers Lane, East Hertfordshire: 4 addresses
- Unnamed street near Chandlers Lane, Allen's Green: 2 addresses
- Covey's Lane, Allen's Green: 1 address
- Unnamed street near Chandlers Lane, Allen's Green: 1 address
Council tax
What each band costs in East Hertfordshire in 2026-27: Band D £2,455 a year on average, including the police, fire and any county and parish charges.
| A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|
| £1,637 | £1,909 | £2,182 | £2,455 | £3,000 | £3,546 | £4,091 | £4,910 |
Homes by band in the neighbourhood around this postcode: most are in band D (26% of about 540 homes).
Planning and heritage
- Conservation area: no postcode centre in this postcode is in one.
- Listed buildings within 100 m of this postcode: 1.
- Article 4 direction (removing permitted development rights): none recorded, though not every council has published theirs.
- Tree preservation orders: none recorded, though not every council has published theirs.
- Green belt: yes, East Hertfordshire.
Listed buildings
- CHANDLERS COTTAGE, grade II
Flood risk
Rivers, the sea or surface water: in this postcode, 1 address is in areas at high risk, 0 at medium risk and 0 at low risk. Each address counts once, at the higher of its rivers-and-sea and surface-water risk.
Rivers and the sea alone: of the 2 homes the Environment Agency counts, 1 are in areas at high risk, 0 medium, 0 low and 0 very low.
High: 3.3% (1 in 30) or more chance of flooding a year. Medium: 1% to 3.3%. Low: 0.1% to 1%. Very low: under 0.1%. The rivers and sea figures allow for flood defences. Counts cover whole postcodes, which can include other streets.
Flood zone for planning: the postcode centre is in flood zone 3. Zone 3 is a 1% (1 in 100) or greater annual chance of flooding from rivers, or 0.5% from the sea, ignoring defences.
Height above sea level
The postcode's 8 addresses are between 73 m and 80 m above sea level (76 m on average).
Broadband
Superfast 0%, ultrafast 0%, gigabit 0% of premises; 100% cannot get 10 Mbit/s. Ofcom Connected Nations, data as at January 2026.
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | Sawbridgeworth 471,000 journeys in 2024–25 | 3.6 km |
| Harlow Mill 279,000 journeys in 2024–25 | 4.1 km | |
| Harlow Town 1.8 million journeys in 2024–25 | 5.0 km | |
| Bus stops | None within 800 m | |
| Bus or coach station | Interchange Bishops Stortford | 5.8 km |
| Car parks | Bell Street Car Park | 2.9 km |
| EV charging points | bp pulse Charging Station | 4.8 km |
| Airport with scheduled flights | London Stansted Airport STN | 10.8 km |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | Gardens And Jacobs Medical Partnership | 2.4 km |
| Pharmacies | Bell Pharmacy | 2.9 km |
| NHS dentists | Dental Surgery | 2.8 km |
| Hospital | Capio Rivers Hospital | 2.4 km |
| Police station | Sawbridge Police Station | 2.8 km |
| Cash machines | Br Spar Gainsborough, Corringham Road | 4.4 km |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Park or garden | Pishiobury Park 36 ha | 2.9 km |
| Play area | Unnamed 1,530 m² | 1.8 km |
| Playing field | Unnamed 6,480 m² | 1.9 km |
| Allotments | High Wych Allotments 8,230 m² | 2.2 km |
Landmarks
21 listed buildings are within 1.0 km.
| Name | What it is | From the postcode's centre |
|---|---|---|
| Allensgreen Wood | Wood | 320 m north |
| The Grove | Wood | 1.5 km south |
| Sayes Coppice | Wood | 2.0 km south |
| Fiddlers' Brook (West Arm) | Lake or reservoir | 2.0 km south-west |
| Latton Island | Island | 4.1 km south |
| Stony Hill | Hill | 4.3 km north-west |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 6.9 | 40 | 10 |
| Fine particles (PM2.5) | 6.9 | 20 | 5 |
| Particles (PM10) | 12.4 | 40 | 15 |
All three are within the UK legal limits; PM2.5 is above the WHO guideline, as in most towns and cities.
Road and rail noise
| Level | Road traffic | Railways |
|---|---|---|
| Under 55 | 8 | 8 |
None of the postcode's 8 addresses is modelled at 55 dB or more from road or rail traffic.
People and work
Who lives here
| Around this postcode | England | |
|---|---|---|
| Median age | 45 | 40 |
| Children under 15 | 18% | 17% |
| Aged 65 and over | 20% | 18% |
Homes
| Around this postcode | England | |
|---|---|---|
| Owned (outright or with a mortgage) | 68% | 61% |
| Owned outright | 36% | 33% |
| Shared ownership | 0% | 1% |
| Social rented | 4% | 17% |
| Private rented | 27% | 21% |
Work and commuting
| Around this postcode | England | |
|---|---|---|
| Adults (16 and over) in work | 67% | 57% |
| Unemployment (of those working or looking for work) | 2% | 6% |
| Retired (of adults) | 20% | 22% |
| Long-term sick or disabled (of adults) | 2% | 4% |
| Work mainly from home (of those in work) | 48% | 32% |
| Travel to work by car or van | 44% | 48% |
| By train, Underground, metro or tram | 3% | 4% |
| By any public transport, including bus | 3% | 8% |
| On foot or by bicycle | 4% | 10% |
| Work within 10 km of home (of those who travel to work) | 58% | 65% |
| Work 30 km or more away | 17% | 8% |
Education and languages
| Around this postcode | England | |
|---|---|---|
| Degree or other higher qualification, Level 4+ (of adults) | 36% | 34% |
| No qualifications | 14% | 18% |
| Apprenticeship as highest qualification | 6% | 5% |
| Main language English (aged 3 and over) | 99% | 91% |
| Cannot speak English well or at all | under 1% | 2% |
Deprivation
The neighbourhood around this postcode is in decile 5 of 10 on the English Indices of Deprivation 2025, where 1 is the most deprived tenth of England's 33,755 neighbourhoods and 10 the least.
The full dossier for this postcode's main street is on Chandlers Lane.