CM12 postcode area guide — Basildon
House prices, crime, broadband speeds, mobile signal, schools and demographics for the CM12 postcode district in Basildon — every official dataset on one page.
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Where is CM12?
Broadband & internet speeds in CM12
Excellent coverage
Superfast (30Mb+)
97.9%
Ultrafast (300Mb+)
80.9%
Gigabit-capable
80.9%
Below USO (10Mb)
0%
Broadband availability in the CM12 postcode district (Basildon) is Excellent — gigabit-capable full fibre is widely available. Across the 494 postcodes Ofcom measures in CM12, superfast broadband (30 Mbit/s or faster) reaches 97.9% of premises and gigabit-capable lines are available to 80.9%.
Around 0% of premises in CM12 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.
Sample postcodes in CM12
| Postcode | Superfast | Gigabit |
|---|---|---|
| CM12 0AA | 100% | 70% |
| CM12 0AB | 100% | 100% |
| CM12 0AD | 100% | 100% |
| CM12 0AE | 100% | 100% |
| CM12 0AG | 100% | 95.6% |
| CM12 0AH | 100% | 62.5% |
| CM12 0AJ | 100% | 77.5% |
| CM12 0AN | 100% | 100% |
| CM12 0AP | 100% | 100% |
| CM12 0AQ | 100% | 0% |
Run a speed test to see what you're actually getting, or check your exact postcode.
Mobile signal around Basildon
Ofcom's coverage model for the wider Basildon district (85,060 premises):
4G indoors — all networks
94.7%
4G outdoors — all networks
100%
5G outdoors — all networks
82.4%
Voice indoors — all networks
97.9%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Crime in CM12
Police recorded 108 incidents within about a mile of the centre of CM12 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Violence & sexual offences | 45 | 41.7% |
| Shoplifting | 27 | 25.0% |
| Anti-social behaviour | 7 | 6.5% |
| Public order | 7 | 6.5% |
| Drugs | 5 | 4.6% |
| Criminal damage & arson | 4 | 3.7% |
| Other theft | 4 | 3.7% |
| Burglary | 3 | 2.8% |
Raw counts favour busy town centres — a high street with shops and nightlife records more incidents than a residential cul-de-sac. Source: police.uk open data (point sample around the district centroid).
House prices in CM12
Based on 273 sales registered with HM Land Registry in the last 12 months, the median sold price in CM12 is £500,000, up 3.1% on the previous year (£485,000).
Detached
£680,000
96 sales
Semi-detached
£480,000
100 sales
Terraced
£373,000
39 sales
Flat / maisonette
£250,000
33 sales
Latest recorded sales in CM12
| Date | Price | Type | Street | Postcode |
|---|---|---|---|---|
| 21 May 2026 | £480,000 | Detached | Tanfield Drive | CM12 9EB |
| 21 May 2026 | £205,000 | Flat | Mallow Gardens | CM12 0ST |
| 18 May 2026 | £390,000 | Semi-detached | Romney Road | CM12 9NE |
| 11 May 2026 | £450,000 | Semi-detached | Lancer Way | CM12 0XA |
| 11 May 2026 | £625,000 | Detached | Langley Place | CM12 0FR |
| 1 May 2026 | £468,000 | Semi-detached | Frithwood Lane | CM12 9PW |
| 1 May 2026 | £350,000 | Terraced | Whitesmith Drive | CM12 0FP |
| 1 May 2026 | £115,000 | Flat | Park Lodge | CM12 0QH |
| 1 May 2026 | £500,000 | Detached | Quilters Drive | CM12 9YE |
| 1 May 2026 | £900,000 | Detached | Bluebell Wood | CM12 0ES |
Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.
Who lives here? Basildon demographics
Census 2021 figures for the wider Basildon district (187,571 residents, 76,363 households):
| Age profile | |
|---|---|
| Under 15 | 20.7% |
| 15–29 | 23.4% |
| 30–44 | 19.8% |
| 45–64 | 19.1% |
| 65+ | 17% |
| Housing tenure | |
|---|---|
| Owner-occupied | 63.3% |
| Private rented | 14.4% |
| Social rented | 7.4% |
Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.
Schools in and around CM12
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| The Billericay School | Secondary | 11–18 | 1,729 | CM12 9LH |
| Mayflower High School | Secondary | 11–18 | 1,616 | CM12 0RT |
| Buttsbury Primary School | Primary | 4–11 | 863 | CM12 0QR |
| Brightside Primary School | Primary | 4–11 | 621 | CM12 0LE |
| St John's School | Not applicable | 2–16 | 274 | CM12 0AR |
| Quilters Junior School | Primary | 7–11 | 262 | CM12 9LD |
| South Green Junior School | Primary | 7–11 | 222 | CM12 9RJ |
| Quilters Infant School | Primary | 4–7 | 181 | CM12 9LD |
Source: DfE Get Information about Schools (England & Wales). Check Ofsted report cards for inspection detail — headline one-word grades were retired in 2024.
Food hygiene ratings in CM12
166 rated food businesses operate in CM12. 115 hold the top rating of 5, 19 are rated 4, and 5 are rated 2 or below.
Among the 5-rated: Amaze In Taste, Angel Products Limited, Banana Moon Day Nursery, Bella Ischia LTD, Billericay Best Kebab.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Energy performance (EPC) in CM12
From a sample of 165 Energy Performance Certificates across 11 CM12 postcodes, the most common rating is band D (average band D). 34% of sampled homes are rated C or better.
Band A
1%
Band B
6%
Band C
27%
Band D
42%
Band E
22%
Band F
2%
Source: MHCLG Energy Performance of Buildings Data (England & Wales), sampled at postcode level and refreshed monthly. Individual certificates are on each postcode’s page.
Phone area codes for Basildon
Landlines around CM12 typically use:
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What's it like living in CM12?
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Moving to CM12? Sort your connectivity first
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Postcodes in CM12
Neighbouring districts
All Chelmsford (CM) postcode districts ›
Frequently asked questions
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Sources: HM Land Registry Price Paid Data, police.uk street-level crime, Ofcom Connected Nations, ONS Census 2021, DfE Get Information about Schools, Food Standards Agency FHRS — all © Crown copyright, licensed under the Open Government Licence v3.0. Figures are area aggregates; individual addresses vary. Energy performance (EPC) data will be added when our Open Data Communities registration is approved.