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    How to choose a tradesperson in North Wales

    Published 23 June 2026by Petrubuilding

    Most home jobs that go wrong trace back to a few checks the homeowner skipped. Here is how to vet any tradesperson in North Wales before work starts.

    Hiring a tradesperson comes down to a few checks you make before anyone picks up a tool. A registration lookup, a written quote and two phone calls take an afternoon, and they save you from the cost and stress that follow a bad hire. This guide covers what to check, what to get in writing and the warning signs to watch for, whether you are hiring a plumber in Bangor or a builder in Wrexham.

    Check they are registered for the work

    Some trades are controlled by law. Others rely on voluntary schemes. Work out which applies before you call.

    Gas work is the strict one. Anyone working on a gas boiler, hob or fire must be on the Gas Safe Register. This is a legal requirement under the Gas Safety (Installation and Use) Regulations 1998, not a nice-to-have. Working on gas without it can bring a fine and can invalidate your home insurance. Every registered engineer carries a Gas Safe ID card showing a licence number and the type of work they are approved for. Ask to see it, then check the number on the Gas Safe Register at gassaferegister.co.uk. If someone offers to “sort the boiler” without being registered, find someone else.

    Electrical work has its own rule. In Wales and England, most fixed electrical work in a home falls under Part P of the Building Regulations. It has to be done by an electrician registered with a competent person scheme such as NICEIC or NAPIT, or signed off by your local council’s building control. A registered electrician can certify their own work and give you the paperwork. Without that certificate you can hit problems when you sell the house.

    Plumbing and building are different. General plumbing is not a licensed trade in the UK, so there is no single register that proves a plumber is competent. The gas rule above still applies the moment any gas work is involved. For builders there is no legal licence either. This is where voluntary schemes carry more weight. Membership of a recognised body, such as the Chartered Institute of Plumbing and Heating Engineering for plumbers or the Federation of Master Builders for builders, shows the trade has signed up to a code of practice and can be held to it.

    TrustMark covers most trades. TrustMark is the only government-endorsed quality scheme for work in and around the home. It covers plumbers, electricians, builders and more, with over 15,000 registered businesses. A TrustMark business has agreed to a code of conduct and, on deposit-protected work, offers an insurance-backed guarantee that survives even if the firm stops trading. A TrustMark or trade-body logo is a useful signal when you draw up a shortlist.

    Get the quote in writing

    A quote and an estimate are not the same thing. A quote is a fixed price for a defined job. An estimate is a best guess that can rise. Ask for a written quote that lists the work, the materials, who supplies them, the total price including VAT, and a rough timeline. If a trader will only give you a number over the phone, you have nothing to hold them to later.

    Check insurance and past work

    Ask whether they hold public liability insurance. It covers damage to your property if something goes wrong, and a working trader will confirm it without hesitating. Then ask for two or three recent jobs you can look at or owners you can call. Photos of finished work are easy to copy from somewhere else. A five-minute call to a real customer is not. Reviews on an independent directory or platform are worth more than testimonials hand-picked for a website.

    Understand deposits and your rights

    Be wary of large upfront demands. A deposit of 10 to 30 percent to cover materials is normal on bigger jobs. A request for most of the cost before any work starts is a warning sign. Stage payments tied to progress protect both sides.

    You also have a legal cooling-off period. When you agree a job at home, away from the trader’s business premises, the Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013 give you 14 days to cancel. If you cancel inside that window you are entitled to your deposit back, unless you asked the trader to start during those 14 days and they have already done work or bought materials. Get the agreement in writing so the dates are clear.

    Watch for the red flags

    Any one of these on its own might be innocent. Two or more together, walk away.

    • Cash only, no receipt, no paperwork
    • Pressure to decide today, or a price that “expires tonight”
    • No written quote, only a spoken figure
    • A demand for most of the money up front
    • No fixed address, landline or company details you can verify
    • Cannot or will not show registration for gas or electrical work

    Questions to ask before you say yes

    • Are you registered for this work, and can I see the proof?
    • Is this a fixed quote or an estimate?
    • Do you have public liability insurance?
    • Can I speak to two recent customers?
    • What deposit do you need, and what does it cover?
    • Who clears up and removes waste when the job is done?

    Run through those before any work begins and you remove most of the risk. When you are ready to find someone across North Wales, you can browse plumbers, electricians, builders and roofers on the directory, with each trade in one place so you can compare and check reviews before you call.

    FAQ

    Do plumbers in the UK need a licence? General plumbing is not a licensed trade, so there is no single register that proves a plumber is qualified. Any gas work is the exception and must be done by a Gas Safe registered engineer. For added reassurance, look for membership of a body like the Chartered Institute of Plumbing and Heating Engineering, or a TrustMark registration.

    How do I check if an electrician is qualified? Most home electrical work in Wales and England falls under Part P of the Building Regulations and must be done by an electrician registered with a competent person scheme such as NICEIC or NAPIT, or signed off by building control. Ask for their scheme registration and make sure you get a certificate for the work.

    What is TrustMark? TrustMark is the only government-endorsed quality scheme for work in and around the home. A registered business has agreed to a code of conduct and, on deposit-protected jobs, offers an insurance-backed guarantee that holds even if the firm stops trading.

    Can I cancel after agreeing a job at home? Usually yes. Under the Consumer Contracts Regulations 2013, agreeing a job at home away from the trader’s premises gives you a 14-day cooling-off period. You can cancel and get your deposit back, unless you asked them to start within those 14 days and work or materials have already been provided.

    How much deposit should I pay a tradesperson? A deposit of 10 to 30 percent to cover materials is normal on larger jobs. Be cautious if a trader asks for most of the cost before starting. Stage payments tied to progress are safer for you.

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