Coleraine · BT51
Gas safety certificate in BT51 (Coleraine)? We'll point you the right way.
Covering Coleraine, Aghadowey, Articlave, Bellany, Blackhill, Castlerock, Castleroe, Garvagh, Kilrea, Macosquin, Ringsend, including Churchland, Rasharkin, Swatragh. Find Gas Safe registered engineers nearby.
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BT51 (Coleraine) in a nutshell
BT51 covers Coleraine, Aghadowey, Articlave, Bellany, Blackhill, Castlerock, Castleroe, Garvagh, Kilrea, Macosquin, Ringsend, in Causeway Coast and Glens and Mid Ulster. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for BT51
Two councils in one district
BT51 is split between Causeway Coast and Glens and Mid Ulster. 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
BT51 stretches across Aghadowey, Castlerock, Churchland and more, so give your full postcode, not just 'BT51', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsOff the gas grid? Check they cover it
Lots of homes around Coleraine 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, Coleraine: 59.1% oil or tank/bottled gas heatingNorthern Ireland landlord rules: quick version
- Every year: a gas safety check.
- Register: with the Landlord Registration Scheme.
More detail on the Coleraine page. Always double-check on nidirect.
Next door to BT51
Frequently asked questions
Which areas does BT51 cover?
BT51 (Coleraine, Aghadowey, Articlave, Bellany, Blackhill, Castlerock, Castleroe, Garvagh, Kilrea, Macosquin, Ringsend) includes the wards of Aghadowey, Castlerock, Churchland, Garvagh, Kilrea, Macosquin, Rasharkin, Swatragh, Tamlaght O'Crilly, Valley, Waterside (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to BT51?
Neighbouring districts include BT52 (Coleraine), BT55 (Portstewart), BT56 (Portrush), BT46 (Maghera), BT53 (Ballymoney) (ONS Postcode Directory via Doogal). A pro covering BT51 may well cover these too, so it's worth asking.
How many homes are in BT51?
About 9,644 households and 25,451 residents at the 2011 Census, across 817 active postcodes (Doogal / ONS Postcode Directory).
Which council area is BT51 in?
BT51 sits in Causeway Coast and Glens, Mid Ulster (postcodes.io). Parliamentary constituency: East Londonderry, Mid Ulster, North Antrim.
📊 The numbers behind this page
- Postcode district
- BT51 1
- Areas covered
- Coleraine, Aghadowey, Articlave, Bellany, Blackhill, Castlerock, Castleroe, Garvagh, Kilrea, Macosquin, Ringsend 2
- Active postcodes
- 817 3
- Households (2011 Census, via Doogal)
- 9,644 2
- Population (2011 Census, via Doogal)
- 25,451 2
- Electoral wards
- Aghadowey, Castlerock, Churchland, Garvagh, Kilrea, Macosquin, Rasharkin, Swatragh … 4
- Parliamentary constituencies
- East Londonderry, Mid Ulster, North Antrim 4
- Local authority
- Causeway Coast and Glens, Mid Ulster 4
- Households heated by mains gas only (Coleraine settlement)
- 23.8% 5
- ONS Postcode Directory
- Doogal
- Doogal / ONSPD
- postcodes.io
- NISRA Census 2021
Made with open data. See where it all comes from. Updated 26 October 2026.