In the construction industry which includes builders, plumbers, electricians, handymen and landscapers, there is a governing body that oversee’s and controls licensing for the tradespeople.
In Queensland, the QBCC is the regulatory body overseeing this work and a professional builder must hold a suitable licence for the work they are carrying out. Of course there are a number of qualifications that may be present, but it is scaled against the work they are carrying out.
A QBCC licence indicates that a contractor has met certain minimum requirements. For most domestic building work, where a QBCC-licensed contractor is used, QBCC’s Statutory Insurance Scheme provides protection against non-completion, defective work and subsidence.
Check the contractor’s applicable licenses and cross reference it with their governing body. They should be able to provide you with their QBCC licence number and you can conduct a search to see their history including any disciplinary orders and offences.