Aberystwyth · SY23
Gas safety certificate in SY23 (Aberystwyth)? We'll point you the right way.
Covering Aberystwyth, Llanon, Llanrhystud, including Aberaeron and Aberarth, Aberystwyth Morfa a Glais, Aberystwyth Penparcau. Find Gas Safe registered engineers nearby.
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Request a gas safety certificate in SY23 (Aberystwyth)
How to check a gas safety engineer is registered: see the Aberystwyth page.
SY23 (Aberystwyth) in a nutshell
SY23 covers Aberystwyth, Llanon, Llanrhystud, in Ceredigion and Powys. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for SY23
Two councils in one district
SY23 is split between Ceredigion and Powys. 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
SY23 stretches across Aberaeron and Aberarth, Aberystwyth Morfa a Glais, Aberystwyth Penparcau and more, so give your full postcode, not just 'SY23', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsOff the gas grid? Check they cover it
Lots of homes around Aberystwyth 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?
ONS Census 2021, Aberystwyth: 5.9% oil or tank/bottled gas heatingWales 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 Aberystwyth page. Always double-check on GOV.WALES.
Next door to SY23
Frequently asked questions
Which areas does SY23 cover?
SY23 (Aberystwyth, Llanon, Llanrhystud) includes the wards of Aberaeron and Aberarth, Aberystwyth Morfa a Glais, Aberystwyth Penparcau, Aberystwyth Rheidol, Faenor, Llanbadarn Fawr, Llanfarian, Llanfihangel Ystrad, Llangeitho, Llanrhystyd, Llansanffraid, Lledrod, Melindwr, Rhayader, Tirymynach, Trefeurig, Ystwyth (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to SY23?
Neighbouring districts include SY24 (Bow Street), LL35 (Aberdovey), LL36 (Tywyn), SY25 (Tregaron), SA48 (Lampeter) (ONS Postcode Directory via Doogal). A pro covering SY23 may well cover these too, so it's worth asking.
How many homes are in SY23?
About 11,661 households and 30,914 residents at the 2011 Census, across 985 active postcodes (Doogal / ONS Postcode Directory).
Which council area is SY23 in?
SY23 sits in Ceredigion, Powys (postcodes.io). Parliamentary constituency: Brecon, Radnor and Cwm Tawe, Ceredigion Preseli.
📊 The numbers behind this page
- Postcode district
- SY23 1
- Areas covered
- Aberystwyth, Llanon, Llanrhystud 2
- Active postcodes
- 985 3
- Households (2011 Census, via Doogal)
- 11,661 2
- Population (2011 Census, via Doogal)
- 30,914 2
- Electoral wards
- Aberaeron and Aberarth, Aberystwyth Morfa a Glais, Aberystwyth Penparcau, Aberystwyth Rheidol, Faenor, Llanbadarn Fawr, Llanfarian, Llanfihangel Ystrad … 4
- Parliamentary constituencies
- Brecon, Radnor and Cwm Tawe, Ceredigion Preseli 4
- Local authority
- Ceredigion, Powys 4
- Households heated by mains gas only (Aberystwyth built-up area)
- 63.8% 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.