Belfast · BT17

Gas safety certificate in BT17 (Belfast)? We'll point you the right way.

Covering Belfast, Derriaghy, Dunmurry, Hannahstown, including Collin Glen, Derryaghy, Drumbo. Find Gas Safe registered engineers nearby.

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Request a gas safety certificate in BT17 (Belfast)

No gas safety engineer listed for BT17 (Belfast) yet. Tell us what you need and we'll find you a registered gas safety engineer, free.

Request a gas safety certificate in BT17 (Belfast)

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

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BT17 (Belfast) in a nutshell

BT17 covers Belfast, Derriaghy, Dunmurry, Hannahstown, in Belfast and Lisburn and Castlereagh. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for BT17

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Two councils in one district

BT17 is split between Belfast and Lisburn and Castlereagh. 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

BT17 stretches across Collin Glen, Derryaghy, Drumbo and more, so give your full postcode, not just 'BT17', when you ask for quotes.

Where's this from?postcodes.io (ONSPD) wards
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Off the gas grid? Check they cover it

Lots of homes around Belfast aren't on mains gas, so if you've got an LPG tank or an oil boiler, check the engineer covers it before you book.

Where's this from?NISRA Census 2021, Belfast: 19.6% oil or tank/bottled gas heating
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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 →

Northern Ireland landlord rules: quick version

  • Every year: a gas safety check.
  • Register: with the Landlord Registration Scheme.

More detail on the Belfast page. Always double-check on nidirect.

Next door to BT17

BT10 · BelfastBT11 · BelfastBT27 · LisburnBT9 · BelfastBT28 · LisburnBT12 · Belfast

← Gas safety (CP12) across Belfast · all areas

Frequently asked questions

Which areas does BT17 cover?

BT17 (Belfast, Derriaghy, Dunmurry, Hannahstown) includes the wards of Collin Glen, Derryaghy, Drumbo, Dunmurry, Finaghy, Ladybrook, Lagmore, Lambeg, Poleglass, Stewartstown, Stonyford, Turf Lodge, Twinbrook, Upper Malone (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to BT17?

Neighbouring districts include BT10 (Belfast), BT11 (Belfast), BT27 (Lisburn), BT9 (Belfast), BT28 (Lisburn) (ONS Postcode Directory via Doogal). A pro covering BT17 may well cover these too, so it's worth asking.

How many homes are in BT17?

About 11,936 households and 32,351 residents at the 2011 Census, across 571 active postcodes (Doogal / ONS Postcode Directory).

Which council area is BT17 in?

BT17 sits in Belfast, Lisburn and Castlereagh (postcodes.io). Parliamentary constituency: Belfast South and Mid Down, Belfast West, Lagan Valley, South Antrim.

📊 The numbers behind this page
Postcode district
BT17 1
Areas covered
Belfast, Derriaghy, Dunmurry, Hannahstown 2
Active postcodes
571 3
Households (2011 Census, via Doogal)
11,936 2
Population (2011 Census, via Doogal)
32,351 2
Electoral wards
Collin Glen, Derryaghy, Drumbo, Dunmurry, Finaghy, Ladybrook, Lagmore, Lambeg … 4
Parliamentary constituencies
Belfast South and Mid Down, Belfast West, Lagan Valley, South Antrim 4
Local authority
Belfast, Lisburn and Castlereagh 4
Households heated by mains gas only (Belfast settlement)
71.7% 5
  1. ONS Postcode Directory
  2. Doogal
  3. Doogal / ONSPD
  4. postcodes.io
  5. NISRA Census 2021

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