Trade regulations in Wales
Know the legal requirements, certifications, and building regulations before hiring any tradesperson in Wales.
Deep-dive guides â sourced, updated, free
Gas Safe Register in Wales
By UK law (Gas Safety (Installation and Use) Regulations 1998), only Gas Safe registered engineers can legallyâŚ
Pre-hire checklist
Before any Welsh tradesperson begins work: verify their trade body register, see proof of insurance, check ComâŚ
TrustMark, FMB & builder vetting in Wales
TrustMark is the government-endorsed scheme â mandatory for any builder taking grant-funded work in Wales and âŚ
Part P Electrical Regulations in Wales
In Wales, all new electrical circuits, consumer-unit changes, and any work in kitchens, bathrooms, or outdoor âŚ
Welsh Building Regulations 2026
Most structural work, extensions, conversions, and significant alterations to a Welsh home need Building ContrâŚ
FENSA & window regulations in Wales
If your installer replaced windows after April 2002, they were legally required to either be in a Competent PeâŚ
Roofing regulations in Wales
A roofer must plan safe access (scaffold, harness, or platform) for any work where falling could injure them. âŚ
Welsh Warm Homes & energy grants 2026
Nest is the Welsh Government's primary grant scheme â free boilers, insulation, heat pumps, and solar for eligâŚ
30 trade types covered â accreditations, certifications, and what to check before hiring
Plumbers â regulations & accreditations
Look for: Gas Safe ¡ APHC ¡ CIPHE. All listed accreditations are verifiable via the relevant UK trade body's public register. Any work on gas appliances requires Gas Safe Register certification by law (Health & Safety at Work Act 1974).
Browse verified plumbers across Wales âElectricians â regulations & accreditations
Look for: NICEIC ¡ NAPIT ¡ Part P. All listed accreditations are verifiable via the relevant UK trade body's public register. Notifiable electrical work in Wales must comply with Part P of the Building Regulations â only NICEIC, NAPIT, or ELECSA Registered Competent Persons can self-certify.
Browse verified electricians across Wales âBuilders â regulations & accreditations
Look for: FMB ¡ TrustMark ¡ NHBC. All listed accreditations are verifiable via the relevant UK trade body's public register. Most construction work requires Building Regulations approval via your Welsh local authority. FMB / TrustMark membership is voluntary but signals vetting.
Browse verified builders across Wales âRoofers â regulations & accreditations
Look for: NFRC ¡ TrustMark ¡ CHAS. All listed accreditations are verifiable via the relevant UK trade body's public register. Work over 2m typically falls under Working at Height Regulations 2005. NFRC members follow the official roofing competency standard.
Browse verified roofers across Wales âPainters & Decorators â regulations & accreditations
Look for: Which? Trusted ¡ TrustATrader ¡ CHAS. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified painters & decorators across Wales âHVAC & Heating â regulations & accreditations
Look for: Gas Safe ¡ CIPHE ¡ OFTEC. All listed accreditations are verifiable via the relevant UK trade body's public register. Any work on gas appliances requires Gas Safe Register certification by law (Health & Safety at Work Act 1974).
Browse verified hvac & heating across Wales âJoiners & Carpenters â regulations & accreditations
Look for: TrustMark ¡ CHAS ¡ FENSA. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified joiners & carpenters across Wales âPlasterers â regulations & accreditations
Look for: CHAS ¡ TrustATrader ¡ Which?. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified plasterers across Wales âDecorators â regulations & accreditations
Look for: TrustATrader ¡ Which? Trusted ¡ CHAS. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified decorators across Wales âGas Engineers â regulations & accreditations
Look for: Gas Safe ¡ CIPHE ¡ Corgi. All listed accreditations are verifiable via the relevant UK trade body's public register. Any work on gas appliances requires Gas Safe Register certification by law (Health & Safety at Work Act 1974).
Browse verified gas engineers across Wales âLocksmiths â regulations & accreditations
Look for: Master Locksmiths ¡ CHAS ¡ TrustATrader. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified locksmiths across Wales âLandscapers â regulations & accreditations
Look for: CHAS ¡ TrustMark ¡ Checkatrade. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified landscapers across Wales âPlasters & Stucco â regulations & accreditations
Look for: CHAS ¡ TrustATrader ¡ Checkatrade. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified plasters & stucco across Wales âSurveyors â regulations & accreditations
Look for: RICS ¡ CHAS ¡ Checkatrade. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified surveyors across Wales âArchitects â regulations & accreditations
Look for: RIBA ¡ CHAS ¡ Checkatrade. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified architects across Wales âTree Surgeons â regulations & accreditations
Look for: Arboricultural Association ¡ CHAS ¡ TrustATrader. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified tree surgeons across Wales âDrainage & Sewage â regulations & accreditations
Look for: CHAS ¡ Checkatrade ¡ TrustATrader. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified drainage & sewage across Wales âWindows & Doors â regulations & accreditations
Look for: FENSA ¡ CHAS ¡ TrustMark. All listed accreditations are verifiable via the relevant UK trade body's public register. Replacement windows in Wales must be FENSA or CERTASS registered for self-certification â otherwise Building Control sign-off is required.
Browse verified windows & doors across Wales âKitchens & Bathrooms â regulations & accreditations
Look for: CHAS ¡ TrustMark ¡ Checkatrade. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified kitchens & bathrooms across Wales âInsulation Specialists â regulations & accreditations
Look for: MCS ¡ CHAS ¡ TrustMark. All listed accreditations are verifiable via the relevant UK trade body's public register. Government-funded insulation (ECO, Welsh Warm Homes) requires MCS or TrustMark registered installers.
Browse verified insulation specialists across Wales âSolar Panel Installers â regulations & accreditations
Look for: MCS ¡ CHAS ¡ Checkatrade. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified solar panel installers across Wales âGroundworks â regulations & accreditations
Look for: CHAS ¡ TrustMark ¡ Checkatrade. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified groundworks across Wales âConcrete & Paving â regulations & accreditations
Look for: CHAS ¡ Checkatrade ¡ TrustATrader. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified concrete & paving across Wales âFencing & Gates â regulations & accreditations
Look for: CHAS ¡ TrustATrader ¡ Checkatrade. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified fencing & gates across Wales âGutters & Fascia â regulations & accreditations
Look for: CHAS ¡ TrustATrader ¡ Checkatrade. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified gutters & fascia across Wales âDamp Proofing â regulations & accreditations
Look for: CHAS ¡ Checkatrade ¡ TrustATrader. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified damp proofing across Wales âDemolition â regulations & accreditations
Look for: CHAS ¡ Environment Agency ¡ Checkatrade. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified demolition across Wales âScaffolding â regulations & accreditations
Look for: CHAS ¡ NASC ¡ Checkatrade. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified scaffolding across Wales âAsbestos Removal â regulations & accreditations
Look for: Licensed Contractor ¡ CHAS ¡ HSE Approved. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified asbestos removal across Wales âAppliance Repair â regulations & accreditations
Look for: Gas Safe (if applicable) ¡ CHAS ¡ Checkatrade. All listed accreditations are verifiable via the relevant UK trade body's public register.
Browse verified appliance repair across Wales âAlways verify before hiring. UK trade-body registers are public â Gas Safe (gassaferegister.co.uk), NICEIC (niceic.com), FMB (fmb.org.uk), TrustMark (trustmark.org.uk), NFRC (nfrc.co.uk). The accreditation badges shown on besttrades.wales listings have been cross-checked against these public registers.