Certification & Licensing
Trades Certification & Licensing by Country
The 33 certification, licensing and compliance entries in our directories for United Kingdom, Australia, Canada, New Zealand, Ireland and South Africa. The rules differ by country, and in Australia and Canada by state or province. Each entry links to its WrenchStack page and to the official site.
What the entries are
Some entries are legal registers: for example Gas Safe Register for gas work in Great Britain and Northern Ireland, RGI and Safe Electric in Ireland, and the EWRB and PGDB in New Zealand. Others are tax or workers' compensation bodies, such as the ATO, SARS, Ireland's Relevant Contracts Tax, WSIB in Ontario and South Africa's Compensation Fund. Some are not licences: a Red Seal endorsement does not by itself certify anyone to carry on a trade, HRAI is a trade association, and membership of New Zealand's Registered Master Builders and Master Plumbers is voluntary. In Australia trade licensing is run by the states, and in Canada trade certification by the provinces and territories. Each market section below summarises the rules our entries document.
United Kingdom
Gas Safe Register is the register approved by HSE: a business must be on it to legally do gas work within the scope of the Gas Safety (Installation and Use) Regulations 1998, and HSE prosecutes unregistered gas fitters. For electrical work in dwellings, NICEIC (Certsure) is one of several authorised competent person schemes, alongside BESCA, Blue Flame Certification, NAPIT and OFTEC, that let installers self-certify instead of getting building regulations approval, and OFTEC is one of six schemes authorised for oil appliances. The payroll tools listed here are on HMRCโs list of recognised payroll software, while CIS returns may need an add-on or a separate product; insurers such as Hiscox and AXA note that employersโ liability insurance is a legal requirement once you employ staff.
Gas Safe Register
The legally required register for businesses doing gas work in Great Britain, Northern Ireland, the Isle of Man and Guernsey
NICEIC
Electrical contractor certification from Certsure LLP, including a Part P competent person scheme for domestic work
OFTEC
Competent person scheme and trade association for oil, solid fuel and renewable heating technicians
Australia
Trade licensing is run by the states: Building Commission NSW issues NSW building and trade licences, QBCC licenses Queensland builders, plumbers and drainers (electrical work is licensed separately by the Electrical Safety Office), Victoriaโs Building and Plumbing Commission registers and licenses plumbers, Building and Energy registers WA builders and licenses electricians, plumbers and gas fitters, and CBS licenses South Australian building and PGE contractors. Automatic Mutual Recognition lets licence holders from participating states work in NSW and, depending on the occupation, in WA, usually after notifying; Queensland does not take part. Employers report pay and super to the ATO through STP-enabled payroll software each payday, and from 1 July 2026 must pay the 12% super guarantee when they pay wages.
Building Commission NSW (formerly NSW Fair Trading licensing)
NSW consumer protection regulator; building and trade licences are now issued by Building Commission NSW
QBCC (Queensland Building and Construction Commission)
Queensland's building regulator: contractor and plumbing licences, home warranty insurance and building disputes
BPC (Building and Plumbing Commission, formerly VBA)
Victoria's building and plumbing regulator, formerly the VBA: plumber registration and licensing, builder oversight and domestic building insurance
Australian Taxation Office (ATO)
Federal tax office: GST, BAS, PAYG withholding, Single Touch Payroll and Payday Super for tradies
Building and Energy (WA)
WA regulator licensing and registering builders, painters, electricians, plumbers and gas fitters
Consumer and Business Services (CBS, South Australia)
South Australia's licensing body for building work contractors and for plumbing, gas fitting and electrical contractors and workers
Canada
Provinces and territories are responsible for apprenticeship training and trade certification; a Red Seal endorsement on a provincial or territorial certificate shows the holder passed the Red Seal exam but does not by itself certify anyone to carry on a trade. In Ontario, working in one of the 23 compulsory trades needs a valid Certificate of Qualification from Skilled Trades Ontario (or a provisional certificate or registered training agreement), only ESA-licensed contractors may do electrical work for hire, TSSA registers fuels contractors and certifies gas technicians, and WSIB says people who own or run a construction business must, with some exceptions, have WSIB coverage and register. The Canadian payroll tools listed here say they handle CRA remittances and Records of Employment; Quebec payroll adds Revenu Quรฉbec remittances, QPP, QPIP and RL-1 reporting, which not every tool covers.
Red Seal Program
Interprovincial standard for skilled trades: a Red Seal endorsement on a provincial or territorial trade certificate
HRAI (Heating, Refrigeration and Air Conditioning Institute of Canada)
Canadian HVACR trade association (founded 1968): design designations, refrigerant courses and a contractor locator
TSSA (Technical Standards and Safety Authority)
Ontario's technical safety regulator: fuels contractor registration and gas technician certification
ESA / ECRA (Electrical Safety Authority, Ontario)
Ontario's electrical safety regulator: licenses the electrical contractors allowed to do electrical work for hire
WSIB (Workplace Safety and Insurance Board, Ontario)
Ontario's workplace insurance board; construction businesses need coverage and hiring parties need clearance certificates
Skilled Trades Ontario
Ontario's agency for apprenticeship and skilled trades certification, which replaced the Ontario College of Trades
New Zealand
Only EWRB-registered and licensed workers can carry out or supervise prescribed electrical work, with the practising licence renewed every 2 years; the PGDB registers and licenses plumbers, gasfitters and drainlayers and prosecutes unauthorised work; and Restricted Building Work on homes must be done or supervised by a Licensed Building Practitioner. WorkSafe enforces the Health and Safety at Work Act 2015 and says amendments take effect on 1 April 2027. The payroll tools listed here file payday information with Inland Revenue, and some act as PAYE intermediaries that pay PAYE to Inland Revenue for you. Master Builders and Master Plumbers membership is voluntary and does not replace licensing.
EWRB (Electrical Workers Registration Board)
New Zealand's registration and licensing board for electrical workers, under the Electricity Act 1992
PGDB (Plumbers, Gasfitters and Drainlayers Board)
New Zealand's registration and licensing board for plumbers, gasfitters and drainlayers
LBP (Licensed Building Practitioners)
New Zealand licensing scheme for builders and designers who do or supervise Restricted Building Work on homes
WorkSafe New Zealand
NZ's work health and safety regulator: HSWA duties apply to every trade business
Registered Master Builders Association
Voluntary builders' association whose members can offer the Master Build 10-Year Guarantee
Master Plumbers, Gasfitters & Drainlayers NZ
Voluntary membership body for plumbers, gasfitters and drainlayers, with a homeowner guarantee
Ireland
Since 1 September 2026 it is illegal for anyone who is not a Registered Gas Installer to carry out domestic or non-domestic gas works (S.I. No. 106/2026), and the CRU says Safe Electric registration for electrical contractors is the law; Safe Energy Ireland runs both schemes for the CRU. Principal contractors deduct RCT at 0%, 20% or 35% from subcontractorsโ payments and file through ROS. The Irish payroll tools listed here say they send payroll submissions to Revenue and handle My Future Fund auto-enrolment. The statutory Construction Industry Register Ireland (CIRI) is not yet mandatory: the CIF says applications open during 2027, and its Voluntary Construction Register runs until then.
RGI (Registered Gas Installer)
Ireland's legal register of gas installers; domestic and, from 1 September 2026, non-domestic gas works
Safe Electric
Ireland's legal registration scheme for electrical contractors, run for the CRU by Safe Energy Ireland
Revenue RCT (Relevant Contracts Tax)
Irish withholding tax on payments from principal contractors to subcontractors in construction, forestry and meat processing
Construction Industry Register Ireland (CIRI)
Planned statutory register of Irish builders run by the CIF; mandatory registration is not yet in force
SEAI Registered Contractor
SEAI's list of contractors approved to do Better Energy Homes grant-funded upgrades in Irish homes
South Africa
Under the Electrical Installation Regulations, 2009, electrical contractors must register with the Department of Employment and Labour, and only registered persons may issue the electrical Certificate of Compliance. Regulation 17 of the Pressure Equipment Regulations bars anyone who is not a registered authorised person (registered through SAQCC Gas) from installing or removing gas appliances and systems. Under PIRBโs rules, only PIRB Licensed Plumbers can issue its plumbing CoC, which is needed for most plumbing work above R1,500 and for electric, solar and heat pump water heating at any cost. Contractors must be cidb-registered to carry out public sector contracts awarded by tender or quotation, and each grade sets a maximum contract value; the NHBRC says anyone in the business of building homes must be registered with it; and under the Construction Regulations, 2014, clients and principal contractors must confirm COIDA good standing before work starts.
PIRB (Plumbing Industry Registration Board)
SAQA-recognised plumber registration and the PIRB Certificate of Compliance
Dept of Employment & Labour (Electrical)
Statutory registration for electrical contractors and the electricians who sign Certificates of Compliance
SAQCC Gas
Registration of gas practitioners under the Pressure Equipment Regulations
CIDB (Construction Industry Development Board)
Contractor grading 1-9 and the register needed for public sector work
NHBRC (Home Builders Registration Council)
Compulsory home builder registration and new-home enrolment
SARS (VAT, PAYE & eFiling)
15% VAT, monthly EMP201 payroll returns, and e-invoicing under consultation
COIDA / Compensation Fund
Workers' compensation registration and the Letter of Good Standing construction sites require
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The US directory covers 10 categories, including field-service software, lead generation and insurance. The state pages repeat our national field-service software rankings for each state and do not cover state licensing rules.