Brentwood · CM13
Gas safety certificate in CM13 (Brentwood)? We'll point you the right way.
Covering Brentwood, East Horndon, Great Warley, Herongate, Hutton, Ingrave, Little Warley, West Horndon, including Brentwood South, Burstead, Harold Wood. Find Gas Safe registered engineers nearby.
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Request a gas safety certificate in CM13 (Brentwood)
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Request a gas safety certificate in CM13 (Brentwood)
How to check a gas safety engineer is registered: see the Brentwood page.
CM13 (Brentwood) in a nutshell
CM13 covers Brentwood, East Horndon, Great Warley, Herongate, Hutton, Ingrave, Little Warley, West Horndon, in Basildon and Brentwood and Havering and Thurrock. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for CM13
Two councils in one district
CM13 is split between Basildon and Brentwood and Havering and Thurrock. Some councils run their own landlord licensing, so check which one your home is in.
Where's this from?
postcodes.io (ONSPD) local authorityGive your full postcode
CM13 stretches across Brentwood South, Burstead, Harold Wood and more, so give your full postcode, not just 'CM13', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsMostly mains gas round here
Most homes in Brentwood run on mains gas, so a standard boiler-and-hob check is what most people need.
Where's this from?
ONS Census 2021, Brentwood: 80.4% mains gas onlyEngland 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.
More detail on the Brentwood page. Always double-check on GOV.UK.
Next door to CM13
Frequently asked questions
Which areas does CM13 cover?
CM13 (Brentwood, East Horndon, Great Warley, Herongate, Hutton, Ingrave, Little Warley, West Horndon) includes the wards of Brentwood South, Burstead, Harold Wood, Herongate, Ingrave & West Horndon, Hutton East, Hutton North, Hutton South, Ingatestone, Fryerning & Mountnessing, Laindon Park, Orsett, Horndon & Bulphan, Warley (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to CM13?
Neighbouring districts include CM14 (Brentwood), CM15 (Brentwood), CM12 (Billericay – West), CM4 (Blackmore), CM11 (Billericay – East) (ONS Postcode Directory via Doogal). A pro covering CM13 may well cover these too, so it's worth asking.
How many homes are in CM13?
About 10,203 households and 24,715 residents at the 2011 Census, across 702 active postcodes (Doogal / ONS Postcode Directory).
Which council area is CM13 in?
CM13 sits in Basildon, Brentwood, Havering, Thurrock (postcodes.io). Parliamentary constituency: Basildon and Billericay, Brentwood and Ongar, Hornchurch and Upminster, South Basildon and East Thurrock.
📊 The numbers behind this page
- Postcode district
- CM13 1
- Areas covered
- Brentwood, East Horndon, Great Warley, Herongate, Hutton, Ingrave, Little Warley, West Horndon 2
- Active postcodes
- 702 3
- Households (2011 Census, via Doogal)
- 10,203 2
- Population (2011 Census, via Doogal)
- 24,715 2
- Electoral wards
- Brentwood South, Burstead, Harold Wood, Herongate, Ingrave & West Horndon, Hutton East, Hutton North, Hutton South, Ingatestone, Fryerning & Mountnessing … 4
- Parliamentary constituencies
- Basildon and Billericay, Brentwood and Ongar, Hornchurch and Upminster, South Basildon and East Thurrock 4
- Local authority
- Basildon, Brentwood, Havering, Thurrock 4
- Households heated by mains gas only (Brentwood built-up area)
- 80.4% 5
- ONS Postcode Directory
- Doogal
- Doogal / ONSPD
- postcodes.io
- ONS Census 2021
Made with open data. See where it all comes from. Updated 26 October 2026.