Billericay · CM12

Gas safety certificate in CM12 (Billericay – West)? We'll point you the right way.

Covering Billericay – West, including Billericay East, Billericay West, Burstead. Find Gas Safe registered engineers nearby.

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Request a gas safety certificate in CM12 (Billericay – West)

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Request a gas safety certificate in CM12 (Billericay – West)

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CM12 (Billericay – West) in a nutshell

CM12 covers Billericay – West, in Basildon and Brentwood. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for CM12

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Two councils in one district

CM12 is split between Basildon and Brentwood. Some councils run their own landlord licensing, so check which one your home is in.

Where's this from?postcodes.io (ONSPD) local authority
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Give your full postcode

CM12 stretches across Billericay East, Billericay West, Burstead and more, so give your full postcode, not just 'CM12', when you ask for quotes.

Where's this from?postcodes.io (ONSPD) wards
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Mostly mains gas round here

Most homes in Billericay run on mains gas, so a standard boiler-and-hob check is what most people need.

Where's this from?ONS Census 2021, Billericay: 85.1% mains gas only
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New to gas safety certificates? Here's what to expect, how to get ready and what it costs, in plain English. Read the quick guide →

England landlord rules: quick version

  • Every year: a check by a Gas Safe registered engineer.
  • Within 28 days: give your tenants a copy (new tenants get it before they move in).
  • Keep it: hang on to records for at least 2 years.

Always double-check on GOV.UK.

Next door to CM12

CM11 · Billericay – EastSS15 · LaindonCM4 · BlackmoreCM13 · BrentwoodSS16 · Langdon HillsSS14 · Basildon

all areas

Frequently asked questions

Which areas does CM12 cover?

CM12 (Billericay – West) includes the wards of Billericay East, Billericay West, Burstead, Herongate, Ingrave & West Horndon (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to CM12?

Neighbouring districts include CM11 (Billericay – East), SS15 (Laindon), CM4 (Blackmore), CM13 (Brentwood), SS16 (Langdon Hills) (ONS Postcode Directory via Doogal). A pro covering CM12 may well cover these too, so it's worth asking.

How many homes are in CM12?

About 8,534 households and 20,043 residents at the 2011 Census, across 507 active postcodes (Doogal / ONS Postcode Directory).

Which council area is CM12 in?

CM12 sits in Basildon, Brentwood (postcodes.io). Parliamentary constituency: Basildon and Billericay, Brentwood and Ongar.

📊 The numbers behind this page
Postcode district
CM12 1
Areas covered
Billericay – West 2
Active postcodes
507 3
Households (2011 Census, via Doogal)
8,534 2
Population (2011 Census, via Doogal)
20,043 2
Electoral wards
Billericay East, Billericay West, Burstead, Herongate, Ingrave & West Horndon 4
Parliamentary constituencies
Basildon and Billericay, Brentwood and Ongar 4
Local authority
Basildon, Brentwood 4
Households heated by mains gas only (Billericay built-up area)
85.1% 5
  1. ONS Postcode Directory
  2. Doogal
  3. Doogal / ONSPD
  4. postcodes.io
  5. ONS Census 2021

Made with open data. See where it all comes from. Updated 26 October 2026.