Welshpool · SY21
Gas safety certificate in SY21 (Welshpool)? We'll point you the right way.
Covering Welshpool, including Banwy, Llanfihangel and Llanwddyn, Berriew and Castle Caereinion, Chirbury & Worthen. Find Gas Safe registered engineers nearby.
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Request a gas safety certificate in SY21 (Welshpool)
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Request a gas safety certificate in SY21 (Welshpool)
How to check a gas safety engineer is registered: see the Welshpool page.
SY21 (Welshpool) in a nutshell
SY21 covers Welshpool, in Powys and Shropshire. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for SY21
Two councils in one district
SY21 is split between Powys and Shropshire. 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
SY21 stretches across Banwy, Llanfihangel and Llanwddyn, Berriew and Castle Caereinion, Chirbury & Worthen and more, so give your full postcode, not just 'SY21', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsOff the gas grid? Check they cover it
Lots of homes around Welshpool 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, Welshpool: 5.2% 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 Welshpool page. Always double-check on GOV.WALES.
Next door to SY21
Frequently asked questions
Which areas does SY21 cover?
SY21 (Welshpool) includes the wards of Banwy, Llanfihangel and Llanwddyn, Berriew and Castle Caereinion, Chirbury & Worthen, Dolforwyn, Forden and Montgomery, Guilsfield, Llandrinio, Llanfair Caereinion and Llanerfyl, Llangyniew and Meifod, Loton, Rhiwcynon, Trelystan and Trewern, Welshpool Castle, Welshpool Gungrog, Welshpool Llanerchyddol (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to SY21?
Neighbouring districts include SY22 (Llanfechain), SY15 (Montgomery), SY16 (Newtown), SY10 (Oswestry), LL20 (Froncysyllte) (ONS Postcode Directory via Doogal). A pro covering SY21 may well cover these too, so it's worth asking.
How many homes are in SY21?
About 7,324 households and 17,136 residents at the 2011 Census, across 872 active postcodes (Doogal / ONS Postcode Directory).
Which council area is SY21 in?
SY21 sits in Powys, Shropshire (postcodes.io). Parliamentary constituency: Montgomeryshire and Glyndwr, Shrewsbury, South Shropshire.
📊 The numbers behind this page
- Postcode district
- SY21 1
- Areas covered
- Welshpool 2
- Active postcodes
- 872 3
- Households (2011 Census, via Doogal)
- 7,324 2
- Population (2011 Census, via Doogal)
- 17,136 2
- Electoral wards
- Banwy, Llanfihangel and Llanwddyn, Berriew and Castle Caereinion, Chirbury & Worthen, Dolforwyn, Forden and Montgomery, Guilsfield, Llandrinio, Llanfair Caereinion and Llanerfyl … 4
- Parliamentary constituencies
- Montgomeryshire and Glyndwr, Shrewsbury, South Shropshire 4
- Local authority
- Powys, Shropshire 4
- Households heated by mains gas only (Welshpool built-up area)
- 74.0% 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.