How to Vet a Plumber in Europe: The Checks That Separate a Professional from a Cowboy

To vet a plumber in Europe, confirm four things before anyone touches a pipe: the trade authorisation required in that country (Sweden's Säker Vatten and Auktoriserad VVS, Denmark's autoriseret VVS-installatør registered with Sikkerhedsstyrelsen, Germany's SHK-Meister, the UK's Gas Safe and WaterSafe schemes, Italy's DM 37/08 declaration of conformity, a recognised installer qualification in France), liability insurance that is in force today, a willingness to pressure-test the work and issue paperwork that meets local water and gas code, and at least two recent references you actually phone. A plumber who clears all four is a professional. One who waves away any of them is a cowboy, and the difference usually surfaces the day the joint behind your wall lets go.

Certification is not one European standard — it is many

There is no single European plumbing licence. Each country regulates the work under its own scheme, and the name on the certificate tells you what has actually been checked. Knowing the right name for the right country is the fastest way to separate a qualified installer from someone who simply owns a van and a wrench.

• Sweden: authorised sanitary work runs through the Säker Vatten (Safe Water) industry rules, and installers marketing themselves as Auktoriserad VVS have documented competence. Ask for the Säker Vatten authorisation number and the intyg (certificate) issued on completion.
• Denmark: legal water and drainage installation must be carried out by an autoriseret VVS-installatør, and the authorisation is administered and listed by Sikkerhedsstyrelsen (the Danish Safety Technology Authority). If the firm is not on that register, the work is not legal.
• Germany: plumbing and heating (Sanitär-Heizung-Klima) is a Meister trade. The person or firm should hold or employ an SHK-Meister and be entered in the Handwerksrolle at the local Handwerkskammer.
• United Kingdom: any gas work is legally restricted to a Gas Safe registered engineer, and reputable water installers belong to WaterSafe. Gas Safe issues an ID card with a licence number and the specific appliances the engineer is approved to work on — check both.
• Italy: a qualified installer works under DM 37/08 and must issue a dichiarazione di conformità (declaration of conformity) for the installation. No declaration, no compliant job.
• France: installers should hold a recognised trade qualification (a CAP/BP in the trade or equivalent) and, for heating and energy work, an RGE qualification if you want the job to qualify for any state support.

Pressure-testing and local code are where cowboys reveal themselves

A competent plumber does not hand you a working tap and call it finished. Pressurised systems are tested before they are closed up, gas installations are checked for tightness, and the result is written down. In gas-regulated work — the UK's Gas Safe regime is the clearest example — that paperwork is not optional; it is the legal record that the appliance is safe to use.

Ask directly: will you pressure-test the pipework before you tile over it, and what certificate do I get at the end? A professional answers without hesitation because it is simply how they work. A cowboy treats the question as an insult, which is exactly the tell you want.

Insurance: the boring document that saves your house

Plumbing failures are slow and expensive. A weeping joint behind a stud wall can run for weeks before a stain appears, and by then the damage is to your floor, the ceiling below, and possibly your neighbour's flat. You want the installer's liability insurance to be current on the day they start, to name the same legal entity that appears on your quote, and to cover water damage specifically. Ask for the certificate, check the dates, and check the company name matches. It takes two minutes and it is the cheapest insurance you will ever buy.

The emergency-hire trap

The worst time to choose a plumber is when water is coming through the ceiling. Panic-hiring is how people end up with an unvetted stranger, an undocumented job, and a call-out charge nobody agreed to. Do the boring work before the emergency, not during it.

• Save two vetted plumbers' numbers in your phone now, before you need either of them.
• Confirm the call-out fee and the hourly or fixed rate before they get in the van — get it in a text if you can.
• Ask whether they carry common parts, so a small leak does not become a two-visit job.
• For anything gas-related, insist on a registered engineer even in an emergency; the fastest available person is not worth an unsafe appliance.

Red flags to walk away from

• Cash-only, no written quote, and vagueness about VAT or an invoice.
• No verifiable authorisation number for the country you are in (Säker Vatten, Sikkerhedsstyrelsen, Gas Safe, and so on).
• Reluctance to pressure-test, or to issue a conformity certificate where the country requires one.
• An insurance certificate that names a different company, has lapsed, or never arrives.
• Pressure to decide immediately, or a price that drops the moment you hesitate.

How Veted checks before a plumber is listed

Veted does the tedious verification so you are not doing it with a torch and a bucket. Before a plumber appears in the directory we confirm the trade authorisation that applies in their country, check that liability insurance is genuinely in force, and read the review history for the pattern of complaints that a single glowing testimonial hides. It is the same four checks you would do yourself — licence, insurance, references, code compliance — done in advance so the emergency shortlist is already trustworthy.

A good plumber is unglamorous on purpose: they turn up when they said, test what they installed, and hand you paperwork that reconciles to the quote. Everything a cowboy saves you at the front end, you pay back with interest through the wall.