Bangor, Gwynedd · LL57
Gas safety certificate in LL57 (Bangor)? We'll point you the right way.
Covering Bangor, Llanllechid, Rachub, Talybont, Bethesda, Glasinfryn, Llandygai, Mynydd Llandygai, Rhiwlas, Tregarth, including Arllechwedd, Canol Bangor, Canol Bethesda. Find Gas Safe registered engineers nearby.
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Request a gas safety certificate in LL57 (Bangor)
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Request a gas safety certificate in LL57 (Bangor)
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LL57 (Bangor) in a nutshell
LL57 covers Bangor, Llanllechid, Rachub, Talybont, Bethesda, Glasinfryn, Llandygai, Mynydd Llandygai, Rhiwlas, Tregarth, in Gwynedd. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for LL57
Gwynedd council area
LL57 is in Gwynedd's area. Some councils run their own landlord licensing, so it's worth checking theirs.
Where's this from?
postcodes.io (ONSPD) local authorityGive your full postcode
LL57 stretches across Arllechwedd, Canol Bangor, Canol Bethesda and more, so give your full postcode, not just 'LL57', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsMostly mains gas round here
Most homes in Bangor, Gwynedd run on mains gas, so a standard boiler-and-hob check is what most people need.
Where's this from?
ONS Census 2021, Bangor, Gwynedd: 75.7% mains gas onlyWales landlord rules: quick version
- Every year: a gas safety check by a Gas Safe registered engineer.
- CO alarm: needed where there's a gas, oil or solid fuel appliance.
- Register: with Rent Smart Wales.
More detail on the Bangor, Gwynedd page. Always double-check on GOV.WALES.
Next door to LL57
Frequently asked questions
Which areas does LL57 cover?
LL57 (Bangor, Llanllechid, Rachub, Talybont, Bethesda, Glasinfryn, Llandygai, Mynydd Llandygai, Rhiwlas, Tregarth) includes the wards of Arllechwedd, Canol Bangor, Canol Bethesda, Dewi, Dwyrain Bangor, Gerlan, Glyder, Penisa'r-waun, Rachub, Tre-garth a Mynydd Llandygái, Y Faenol (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to LL57?
Neighbouring districts include LL59 (Menai Bridge), LL58 (Beaumaris), LL56 (Y Felinheli), LL61 (Llanfairpwllgwyngyll), LL60 (Gaerwen) (ONS Postcode Directory via Doogal). A pro covering LL57 may well cover these too, so it's worth asking.
How many homes are in LL57?
About 10,029 households and 27,588 residents at the 2011 Census, across 907 active postcodes (Doogal / ONS Postcode Directory).
Which council area is LL57 in?
LL57 sits in Gwynedd (postcodes.io). Parliamentary constituency: Bangor Aberconwy, Dwyfor Meirionnydd.
📊 The numbers behind this page
- Postcode district
- LL57 1
- Areas covered
- Bangor, Llanllechid, Rachub, Talybont, Bethesda, Glasinfryn, Llandygai, Mynydd Llandygai, Rhiwlas, Tregarth 2
- Active postcodes
- 907 3
- Households (2011 Census, via Doogal)
- 10,029 2
- Population (2011 Census, via Doogal)
- 27,588 2
- Electoral wards
- Arllechwedd, Canol Bangor, Canol Bethesda, Dewi, Dwyrain Bangor, Gerlan, Glyder, Penisa'r-waun … 4
- Parliamentary constituencies
- Bangor Aberconwy, Dwyfor Meirionnydd 4
- Local authority
- Gwynedd 4
- Households heated by mains gas only (Bangor, Gwynedd built-up area)
- 75.7% 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.