Credentials
Evidence it, don't assume it
Nine out of thirty installers prospected in this market could not be linked with confidence to an official registry entry by searching their trading name. It doesn't mean they aren't registered: it means their website doesn't let you check.
Why it matters
The record that belongs on every site in this sector
- Registered name and legal form
- To be supplied and verified
Who is legally answerable for the work. A trading name is not enough.
- Company tax number
- To be supplied and verified
It's what links a trading name to an official registry entry.
- Installer or maintainer registration number
- To be supplied and verified
The fact almost nobody publishes, and the one that builds most trust when present.
- Authorised category
- To be supplied and verified
Not a generic badge: it changes by branch, and it has to be stated.
- Public liability insurance in force
- To be supplied and verified
It covers the damage if something goes wrong inside the home.
- Business address
- To be supplied and verified
It must match the Google listing. When it doesn't, trust drops.
Credentials
It isn't one badge: it changes by branch
A company can be authorised for gas and not for low voltage. Saying “we're authorised installers” with nothing after it evidences nothing; you have to say for what.
Gas installations
Categories A, B and C depending on the installation. A registered company is required.
Thermal installations
Heating, hot water and air conditioning, as installer or maintainer.
Low voltage
Basic or specialist category depending on the electrical installation.
Where the customer checks it
The regional government maintains a public search for registered installer and maintenance companies. With the registered name or the tax number, anyone can check in a minute whether a company is registered and in which category. Publishing the fact is what turns a claim into something verifiable.
Official search for registered installer and maintenance companies
And where there's no registry, none is invented
Locksmithing, and plumbing that doesn't touch regulated installations, have no equivalent industrial registry. There, what's evidenced is identity, activity and insurance. Manufacturing a badge that doesn't exist for those branches is worse than having none.