Belfast · BT5

Plumbing compliance check in BT5 (Belfast)? We'll point you the right way.

Covering Belfast, Castlereagh, Crossnacreevy, Gilnahirk, Knock, including Ballyhanwood, Ballymacarrett, Beersbridge. Find plumbers nearby.

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Request a plumbing compliance check in BT5 (Belfast)

How to check a plumber is registered: see the Belfast page.

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BT5 (Belfast) in a nutshell

BT5 covers Belfast, Castlereagh, Crossnacreevy, Gilnahirk, Knock, 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 BT5

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Two councils in one district

BT5 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

BT5 stretches across Ballyhanwood, Ballymacarrett, Beersbridge and more, so give your full postcode, not just 'BT5', when you ask for quotes.

Where's this from?postcodes.io (ONSPD) wards
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Older terraces, older pipes

Belfast has lots of terraced homes. In older ones, ask the plumber to look at shared supply pipes and any old tanks in the loft.

Where's this from?NISRA Census 2021, Belfast: 38.1% terraced
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New to plumbing compliance checks? 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

  • Repair: keep water and sanitation in repair; assess Legionella risk.
  • Register: with the Landlord Registration Scheme.

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

Next door to BT5

BT4 · BelfastBT6 · BelfastBT7 · BelfastBT3 · BelfastBT2 · BelfastBT1 · Belfast

← Plumbing & water compliance across Belfast · all areas

Frequently asked questions

Which areas does BT5 cover?

BT5 (Belfast, Castlereagh, Crossnacreevy, Gilnahirk, Knock) includes the wards of Ballyhanwood, Ballymacarrett, Beersbridge, Bloomfield, Connswater, Gilnahirk, Hillfoot, Knock, Merok, Moneyreagh, Orangefield, Sandown, Shandon, Stormont (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to BT5?

Neighbouring districts include BT4 (Belfast), BT6 (Belfast), BT7 (Belfast), BT3 (Belfast), BT2 (Belfast) (ONS Postcode Directory via Doogal). A pro covering BT5 may well cover these too, so it's worth asking.

How many homes are in BT5?

About 17,398 households and 38,809 residents at the 2011 Census, across 875 active postcodes (Doogal / ONS Postcode Directory).

Which council area is BT5 in?

BT5 sits in Belfast, Lisburn and Castlereagh (postcodes.io). Parliamentary constituency: Belfast East, Belfast South and Mid Down.

📊 The numbers behind this page
Postcode district
BT5 1
Areas covered
Belfast, Castlereagh, Crossnacreevy, Gilnahirk, Knock 2
Active postcodes
875 3
Households (2011 Census, via Doogal)
17,398 2
Population (2011 Census, via Doogal)
38,809 2
Electoral wards
Ballyhanwood, Ballymacarrett, Beersbridge, Bloomfield, Connswater, Gilnahirk, Hillfoot, Knock … 4
Parliamentary constituencies
Belfast East, Belfast South and Mid Down 4
Local authority
Belfast, Lisburn and Castlereagh 4
Households in converted/shared houses (Belfast settlement)
3.4% 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.