Derby · DE21
Gas safety certificate in DE21 (Chaddesden)? We'll point you the right way.
Covering Chaddesden, Oakwood, Spondon, Breadsall, Horsley, Little Eaton, including Alvaston North, Arboretum, Chaddesden East. Find Gas Safe registered engineers nearby.
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Request a gas safety certificate in DE21 (Chaddesden)
How to check a gas safety engineer is registered: see the Derby page.
DE21 (Chaddesden) in a nutshell
DE21 covers Chaddesden, Oakwood, Spondon, Breadsall, Horsley, Little Eaton, in Amber Valley and Derby and Erewash. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for DE21
Two councils in one district
DE21 is split between Amber Valley and Derby and Erewash. 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
DE21 stretches across Alvaston North, Arboretum, Chaddesden East and more, so give your full postcode, not just 'DE21', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsMostly mains gas round here
Most homes in Derby run on mains gas, so a standard boiler-and-hob check is what most people need.
Where's this from?
ONS Census 2021, Derby: 81.6% 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 Derby page. Always double-check on GOV.UK.
Next door to DE21
Frequently asked questions
Which areas does DE21 cover?
DE21 (Chaddesden, Oakwood, Spondon, Breadsall, Horsley, Little Eaton) includes the wards of Alvaston North, Arboretum, Chaddesden East, Chaddesden North, Chaddesden West, Darley, Kilburn, Denby, Holbrook & Horsley, Little Eaton & Stanley, Oakwood, Spondon, West Hallam & Dale Abbey (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to DE21?
Neighbouring districts include DE1 (Derby city centre), DE24 (Allenton), DE22 (Allestree) (ONS Postcode Directory via Doogal). A pro covering DE21 may well cover these too, so it's worth asking.
How many homes are in DE21?
About 23,870 households and 57,024 residents at the 2011 Census, across 1,261 active postcodes (Doogal / ONS Postcode Directory).
Which council area is DE21 in?
DE21 sits in Amber Valley, Derby, Erewash (postcodes.io). Parliamentary constituency: Amber Valley, Derby North, Derby South, Mid Derbyshire.
📊 The numbers behind this page
- Postcode district
- DE21 1
- Areas covered
- Chaddesden, Oakwood, Spondon, Breadsall, Horsley, Little Eaton 2
- Active postcodes
- 1,261 3
- Households (2011 Census, via Doogal)
- 23,870 2
- Population (2011 Census, via Doogal)
- 57,024 2
- Electoral wards
- Alvaston North, Arboretum, Chaddesden East, Chaddesden North, Chaddesden West, Darley, Kilburn, Denby, Holbrook & Horsley, Little Eaton & Stanley … 4
- Parliamentary constituencies
- Amber Valley, Derby North, Derby South, Mid Derbyshire 4
- Local authority
- Amber Valley, Derby, Erewash 4
- Households heated by mains gas only (Derby built-up area)
- 81.6% 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.