Lambeth · SE21

Gas safety certificate in SE21 (Dulwich)? We'll point you the right way.

Covering Dulwich, Dulwich Village, West Dulwich, Tulse Hill, Sydenham Hill, including Dulwich Wood, Gipsy Hill, St Martin's. Find Gas Safe registered engineers nearby.

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Request a gas safety certificate in SE21 (Dulwich)

No gas safety engineer listed for SE21 (Dulwich) yet. Tell us what you need and we'll find you a registered gas safety engineer, free.

Request a gas safety certificate in SE21 (Dulwich)

How to check a gas safety engineer is registered: see the Lambeth page.

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SE21 (Dulwich) in a nutshell

SE21 covers Dulwich, Dulwich Village, West Dulwich, Tulse Hill, Sydenham Hill, in Lambeth and Southwark. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for SE21

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Two councils in one district

SE21 is split between Lambeth and Southwark. 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

SE21 stretches across Dulwich Village, Dulwich Wood, Gipsy Hill and more, so give your full postcode, not just 'SE21', when you ask for quotes.

Where's this from?postcodes.io (ONSPD) wards
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Postcodes change here

Lots of old SE21 postcodes have been retired. If an old letter shows a different postcode, use your current one.

Where's this from?Doogal/ONSPD: 296 of 535 postcodes active
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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.

More detail on the Lambeth page. Always double-check on GOV.UK.

Next door to SE21

SE27 · West NorwoodSE19 · Upper NorwoodSE24 · Herne HillSE22 · East DulwichSE23 · Forest HillSE5 · Camberwell

← Gas safety (CP12) across Lambeth · all areas

Frequently asked questions

Which areas does SE21 cover?

SE21 (Dulwich, Dulwich Village, West Dulwich, Tulse Hill, Sydenham Hill) includes the wards of Dulwich Village, Dulwich Wood, Gipsy Hill, St Martin's, West Dulwich (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to SE21?

Neighbouring districts include SE27 (West Norwood), SE19 (Upper Norwood), SE24 (Herne Hill), SE22 (East Dulwich), SE23 (Forest Hill) (ONS Postcode Directory via Doogal). A pro covering SE21 may well cover these too, so it's worth asking.

How many homes are in SE21?

About 6,069 households and 15,257 residents at the 2011 Census, across 296 active postcodes (Doogal / ONS Postcode Directory).

Which council area is SE21 in?

SE21 sits in Lambeth, Southwark (postcodes.io). Parliamentary constituency: Dulwich and West Norwood.

📊 The numbers behind this page
Postcode district
SE21 1
Areas covered
Dulwich, Dulwich Village, West Dulwich, Tulse Hill, Sydenham Hill 2
Active postcodes
296 3
Households (2011 Census, via Doogal)
6,069 2
Population (2011 Census, via Doogal)
15,257 2
Electoral wards
Dulwich Village, Dulwich Wood, Gipsy Hill, St Martin's, West Dulwich 4
Parliamentary constituencies
Dulwich and West Norwood 4
Local authority
Lambeth, Southwark 4
Households heated by mains gas only (Lambeth built-up area)
69.2% 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.