# CM1 3JJ: area report for a postcode in Chelmsford

CM1 3JJ is a postcode in Chelmsford.

A postcode has no figures of its own: each layer is published for whole councils, neighbourhoods or exact points. The figures below are for the whole of Chelmsford. Open the map at CM1 3JJ for neighbourhoods and points.

In: [Chelmsford](https://openindex.co.uk/chelmsford) › [CM1](https://openindex.co.uk/postcode/cm1) › [CM1 3](https://openindex.co.uk/postcode/cm1-3)

## Around this postcode

- **5 crimes within 500 m**: August, down 37% on July. Chelmsford 011E: 26 a year per 1,000 people. (Map point) https://openindex.co.uk/map/street-crime?around=0.4187,51.7283,CM13JJ
- **Chelmsford, 3.5 km**: The nearest station, in a straight line. (Exact point) https://openindex.co.uk/map/stations?around=0.4187,51.7283,CM13JJ
- **2 schools within 800 m**: Nearest is 440 m away. (Exact point) https://openindex.co.uk/map/schools?around=0.4187,51.7283,CM13JJ
- **No property in CM1 3JJ listed at risk of flooding**: From rivers or the sea, with flood defences, in the Environment Agency's assessment. (Postcode) https://openindex.co.uk/map/flood-risk-by-postcode?around=0.4187,51.7283,CM13JJ
- **England’s least deprived 50%**: This neighbourhood, Chelmsford 011E. (Neighbourhood) https://openindex.co.uk/map/deprivation-england?around=0.4187,51.7283,CM13JJ
- **£378,080 average price**: For the whole of Chelmsford, July 2026. (Council) https://openindex.co.uk/map/house-prices?around=0.4187,51.7283,CM13JJ
- **1 GP practice within 1 km**: Nearest is 710 m away. (Postcode) https://openindex.co.uk/map/gp-practices?around=0.4187,51.7283,CM13JJ
- **2 supermarkets within 1 km**: Nearest is 240 m away. (Exact point) https://openindex.co.uk/map/supermarkets?around=0.4187,51.7283,CM13JJ
- **Gigabit broadband for every home and business at CM1 3JJ**: Superfast for 100%. What can be ordered, January 2026. (Postcode) https://openindex.co.uk/map/broadband-by-postcode?around=0.4187,51.7283,CM13JJ
- **Low road and rail noise at CM1 3JJ**: Road 51 dB, rail under 40 dB or not modelled (Lden, modelled for 2021) (Postcode) https://openindex.co.uk/map/noise-by-postcode?around=0.4187,51.7283,CM13JJ
- **Not in a radon Affected Area**: Under 1% of homes in this 1 km square are estimated to be at or above the radon Action Level. (1 km grid) https://openindex.co.uk/map/radon?around=0.4187,51.7283,CM13JJ
- **9.9 µg/m³ nitrogen dioxide**: Modelled yearly average for this 1 km square, 2025. (1 km grid) https://openindex.co.uk/map/nitrogen-dioxide?around=0.4187,51.7283,CM13JJ

## Nearest schools

| School | Phase | Distance | Ofsted | Results |
| --- | --- | --- | --- | --- |
| [Writtle Infant School](https://openindex.co.uk/school/writtle-infant-school-e151221) | Primary | 440 m (6 minutes on foot) | School remains Good, May 2023 | – |
| [Writtle Junior School](https://openindex.co.uk/school/writtle-junior-school-e151222) | Primary | 440 m (6 minutes on foot) | School remains Good, July 2023 | – |
| [Writtle College Limited](https://openindex.co.uk/school/writtle-college-limited-e150975) | Sixth form and further education | 1.2 km (15 minutes on foot) | Not in Ofsted's state-funded schools file | – |
| [Hylands School](https://openindex.co.uk/school/hylands-school-e137072) | Secondary | 1.5 km (19 minutes on foot) | Report card, February 2026: safeguarding met, special measures | Attainment 8 of 40.3 (2025/26, provisional) |

## Recent sales nearby

| Month | Price | Home | Distance |
| --- | --- | --- | --- |
| May 2023 | £390,000 | Semi-detached, established, freehold | 80 m |
| October 2025 | £495,000 | Semi-detached, established, freehold | 80 m |
| May 2024 | £385,000 | Semi-detached, established, freehold | 100 m |
| August 2026 | £373,750 | Semi-detached, established, freehold | 100 m |
| August 2026 | £485,000 | Semi-detached, established, freehold | 120 m |
| November 2024 | £425,000 | Semi-detached, established, freehold | 130 m |
| September 2023 | £558,500 | Semi-detached, established, freehold | 160 m |
| July 2026 | £810,000 | Detached, established, freehold | 170 m |

## Within 1 km

- GP practices: THE WRITTLE SURGERY (710 m)
- Pharmacies: THE VILLAGE PHARMACY (670 m)
- Dental practices: DENTAL SURGERY (950 m)
- Supermarkets: Co-op Long Braddocks Writtle (240 m, The Co-operative Group); Co-op Writtle (930 m, Chelmsford Star Co-operative Society)

## Key figures

- **Average house price: £378,080** (July 2026). Chelmsford’s average house price was £378,080 in July 2026 (HM Land Registry). Down 2.3% in a year. Source: UK House Price Index, July 2026. Published 16 September 2026.
- **Median full-time pay: £46,179** (2025). Full-time workers living in Chelmsford earned a median of £46,179 in 2025 (ONS earnings survey). 39th highest paid of 348. Source: Annual Survey of Hours and Earnings, 2025. Published 23 October 2025.
- **House price to pay: 8.2×** (2025). A home in Chelmsford costs 8.2 times local full-time pay. Joint 123rd least affordable of 348. Source: Worked out by Open Index from the UK House Price Index and the ONS earnings survey. Published 16 September 2026.
- **Deprivation score: 13.1** (2025). Chelmsford has a deprivation score of 13.1 in the English Indices of Deprivation 2025 (MHCLG). Joint 65th least deprived of 296. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025.

## Chelmsford 011E (Neighbourhood)

- **Deprivation score: 14.7** (2025). Chelmsford 011E has a deprivation score of 14.7 in the English Indices of Deprivation 2025 (MHCLG). Joint 14,045th least deprived of 33,755. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025.
- **Median sale price: £532,500** (2025). The median price paid for a home in Chelmsford 011E was £532,500 in 2025. Joint 3,942nd most expensive of 31,750. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026.
- **Population: 1,387** (2021). Chelmsford 011E had 1,387 usual residents at the census (ONS Census 2021). Joint 17,650th least populated of 46,844. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026.
- **Gigabit broadband coverage: 96.9%** (January 2026). In Chelmsford 011E, 96.9% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026.

## CM1 (Postcode district)

- **Median sale price: £400,000** (2025). The median price paid for a home in CM1 was £400,000 in 2025. Joint 587th most expensive of 2,235. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026.
- **Population: 69,073** (2021). CM1 had 69,073 usual residents at the census (ONS Census 2021). 47th most populated of 2,756. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026.
- **People in radon Affected Area squares: 0%** (2022). About 0% of people in CM1 live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022.
- **Gigabit broadband coverage: 94.2%** (January 2026). In CM1, 94.2% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026.

## About

- Type: Postcode
- Council: [Chelmsford](https://openindex.co.uk/chelmsford)
- Centre: 51.7283, 0.4187

Council: [Chelmsford](https://openindex.co.uk/chelmsford) (District, 100%).

## Your MP

- [North West Essex](https://openindex.co.uk/constituency/north-west-essex): Mrs Kemi Badenoch (Conservative), MP since July 2024.

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

## Sources

- [Street-level crime](https://openindex.co.uk/sources/street-crime), August 2026 (Map point)
- [Rail and Tube stations](https://openindex.co.uk/sources/stations), 2024/25 (Exact point)
- [Schools](https://openindex.co.uk/sources/schools) (Exact point)
- [Flood risk by postcode](https://openindex.co.uk/sources/flood-risk-by-postcode), June 2026 (Postcode)
- [English Indices of Deprivation 2025](https://openindex.co.uk/sources/deprivation-england), 2025 (Neighbourhood)
- [Average house price](https://openindex.co.uk/sources/house-prices), July 2026 (Council)
- [GP practices](https://openindex.co.uk/sources/gp-practices) (Postcode)
- [Supermarkets](https://openindex.co.uk/sources/supermarkets) (Exact point)
- [Broadband by postcode](https://openindex.co.uk/sources/broadband-by-postcode), January 2026 (Postcode)
- [Road and rail noise by postcode](https://openindex.co.uk/sources/noise-by-postcode), 2021 (Postcode)
- [Radon potential](https://openindex.co.uk/sources/radon) (1 km grid)
- [Nitrogen dioxide (NO2)](https://openindex.co.uk/sources/nitrogen-dioxide), 2025 (1 km grid)

On the map: https://openindex.co.uk/map/sold-prices?around=0.4187,51.7283,CM13JJ

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/cm1-3jj.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.8, https://doi.org/10.5281/zenodo.23508850. The HTML page: https://openindex.co.uk/postcode/cm1-3jj