Property market
The five-year median is £315,000 from 6 recorded sales in CM20 3NJ. This is a recorded-sale statistic, not a current valuation.
The latest UK House Price Index average for Harlow is £313,338 in June 2026, up 1.7% year on year.
CM20 3NJ
Netteswell · Harlow · England
Updated September 2026
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Nearby postcodes
Complete postcode fields and official codes
- Postcode
- CM20 3NJ
- Status
- Current
- Introduced
- 1 January 1980
- Terminated
- Not published
- Postcode area
- CM
- Postcode district
- CM20
- Postcode sector
- CM20 3
- Latitude
- 51.767946
- Longitude
- 0.112682
- British National Grid easting
- 545,877
- British National Grid northing
- 209,807
Statistical and administrative geographies
- Country
- England · E92000001
- Region
- East of England · E12000006
- Local authority district
- Harlow · E07000073
- Electoral ward
- Netteswell · E05015687
- Parish or community
- E43000064
- Westminster constituency
- Harlow · E14001267
- Output area
- E00111003
- Lower layer super output area
- Harlow 003D · E01021852
- Middle layer super output area
- Harlow 003 · E02004546
Postcode source versions
- Ordnance Survey: Code-Point Open Version 2026-08 · Current postcode units in Great Britain · OGL-3.0
- Office for National Statistics: ONS Postcode Directory Version 2026-08 · United Kingdom; Northern Ireland excluded pending rights review; Crown Dependencies outside product scope · OGL-3.0 with third-party rights
- Ordnance Survey: Boundary-Line Version 2026-05 · Local-authority boundaries in Great Britain · OS OpenData Licence
Explore CM20
Property
37 recorded
sales at this postcode
| Address | Date | Price |
|---|---|---|
| 28, Long Ley, Harlow, CM20 3NJ | 31 October 2024 | £290,000 |
| 41, Long Ley, Harlow, CM20 3NJ | 8 July 2024 | £315,000 |
| 27, Long Ley, Harlow, CM20 3NJ | 12 February 2024 | £315,000 |
Schools
Within 3.1 miles of this postcode
- Open schools
- 43
- Primary
- 31
- Secondary
- 7
- 710 m
Freshwaters Primary Academy
Academy sponsor led
- 739 m
St Mark's West Essex Catholic School
Academy converter
- 749 m
Cooks Spinney Primary Academy and Nursery
Academy sponsor led
Recorded crime
Within 1 mile of this postcode
- Published events
- 4,980
- Months covered
- 12
- Latest month
- June 2026
Most recorded categories in this period
- Violence and sexual offences 1,936
- Shoplifting 554
- Public order 435
- Criminal damage and arson 373
- Anti social behaviour 336
Census 2021
Population and age profile
- Postcode residents
- 103
- Postcode households
- 44
- Residents per household
- 2.3
- CM20 3 residents
- 11,736
53 female, 50 male
Age bands in CM20 3
Wider postcode sector- Age 0 to 14
- 20.5%
- Age 15 to 24
- 11.5%
- Age 25 to 44
- 28.8%
- Age 45 to 64
- 24.3%
- Age 65 and over
- 15%
2,426 residents
1,355 residents
3,401 residents
2,872 residents
1,772 residents
This postcode contained 0.9% of the sector's usual residents on Census Day. The age profile describes the wider CM20 3 sector, not people in this individual postcode.
Small counts are adjusted for privacy, so totals can differ slightly between Census tables.
Census Day: 21 March 2021. Sources: ONS/Nomis P001-P004 and ONS CT21_0228. Age table version 2024-04-08.
Fixed broadband coverage
Ofcom's predicted availability across all residential and commercial premises in this postcode in January 2026.
- Superfast, 30 Mbit/s+
- 100%
- Ultrafast, 100 Mbit/s+
- 100%
- Ultrafast, 300 Mbit/s+
- 100%
- Gigabit-capable
- 100%
- Unable to receive decent fixed or FWA broadband
- 0%
- Next Generation Access
- 100%
- Decent broadband available from fixed wireless
- 0%
Predicted coverage, not measured speeds. Check availability for your address with a provider. Postcode-level full-fibre figures are not published in this release.
Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.
GP practices
9
within 5 km straight-line
SYDENHAM HOUSE SURGERY
SYDENHAM HOUSE, MONSWICK ROAD, LONG LEY, HARLOW, CM20 3NT
ODS code F81619
147 m
NUFFIELD HOUSE HEALTH CENTRE
NUFFIELD HOUSE SURGERY, THE STOW, HARLOW, CM20 3AX
ODS code F81120
723 m
THE HAMILTON PRACTICE
KEATS HOUSE, THE FAIRWAY, BUSHFAIR, HARLOW, CM18 6LY
ODS code F81047
1.2 km
THE ROSS PRACTICE
KEATS HOUSE, BUSH FAIR, HARLOW, CM18 6LY
ODS code F81106
1.2 km
CHURCH LANGLEY MEDICAL PRACTICE
CHURCH LANGLEY WAY, HARLOW, CM17 9TG
ODS code F81078
1.4 km
ADDISON HOUSE - HAQUE PRACTICE
ADDISON HOUSE, HARLOW, CM20 1DS
ODS code F81181
1.7 km
LISTER MEDICAL CENTRE
LISTER HOUSE HEALTH CENTRE, ABERCROMBIE WAY, HARLOW, CM18 6YJ
ODS code F81027
2.1 km
OLD HARLOW HEALTH CENTRE
JENNER HSE, GARDEN TCE RD, HARLOW, CM17 0AX
ODS code F81056
2.3 km
GARDENS AND JACOBS MEDICAL PARTNERSHIP
JACOBS & GARDENS NEUROLOGICAL CTRS, HIGH WYCH ROAD, SAWBRIDGEWORTH, CM21 0HH
ODS code Y01924
4.5 km
Nearby transport
- 0.1 miles
Heart and Club
BCT · Harlow
- 0.1 miles
Heart and Club
BCT · Harlow
- 0.1 miles
Long Ley
BCT · Harlow
- 0.1 miles
Long Ley
BCT · Harlow
- 0.1 miles
Maddox Road
BCT · Harlow
Relative deprivation
English Indices of Deprivation 2025 for Harlow 003D, the published LSOA linked to this postcode. Decile 1 contains the most deprived 10% of English LSOAs and decile 10 the least deprived 10%.
Overall IMD decile
4 of 10
Overall England rank
11,181 of 33,755
- Income
- 4 of 10
- Employment
- 3 of 10
- Education and skills
- 3 of 10
- Health and disability
- 5 of 10
- Crime
- 3 of 10
- Housing and services
- 4 of 10
- Living environment
- 8 of 10
These are relative area statistics, not measures of an individual household, affluence or absolute change. They cannot be compared with indices for other UK nations. Source: English Indices of Deprivation 2025, version 2025-v2.
Flood risk
Environment Agency long-term indicators for the area around addresses in this postcode. They are not an assessment of any individual property and do not show current or forecast flooding.
- High risk addresses
- 0
- Medium risk addresses
- 0
- Low risk addresses
- 4
- Groundwater flood alert area
- Unlikely
Source: Environment Agency flood-risk postcode search tool data, version 2026-06-18. Check the long-term risk for an individual area. © Environment Agency copyright and/or database right 2025. All rights reserved.
Evidence in context
Schools
43 open schools are in scope, including 31 primary and 7 secondary schools. Freshwaters Primary Academy is the nearest published school at 710 m.
Counts describe active establishment records. They do not assess admissions, catchments or quality.
Recorded crime
4,980 published events cover 12 months, averaging 415 events per published month. The largest recorded category is Violence and sexual offences with 1,936 events.
The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.