Know the rules
Can you do it yourself?
In Ireland, certain electrical work is legally restricted to registered contractors — and some isn't. Pick a job below and get a straight answer.
Find a registered electricianNeeds a registered electrician
Replace or upgrade the fuseboard
This is the most safety-critical job in the house. A REC only — no exceptions.
Add a new circuit
New circuits are restricted works and must be installed and certified by a REC.
Install new wiring or cable runs
Any new wiring is restricted. A REC must do the work and issue a cert.
Install an EV home charger
Needs a dedicated circuit and SEAI-registered installer. REC only.
Install an electric shower
Dedicated circuit in a bathroom — restricted works, REC only.
Add outdoor or garden wiring
Outdoor wiring is restricted. Must be weatherproof, RCD-protected and certified.
Install mains-wired smoke or heat alarms
Mains wiring connection makes this restricted work — needs a REC.
Add a new socket (new cable run)
A new cable run to a new socket is restricted work.
DIY is generally fine
Swap a socket or switch faceplate (no new wiring)
A like-for-like cosmetic swap with no new wiring or cable work is generally fine as a DIY job.
Swap a light fitting (same wiring)
Replacing a fitting on an existing, sound circuit is generally a DIY job. Turn off the circuit first.
Replace lightbulbs
Always DIY — no wiring involved.
Install battery-powered smoke alarms
Battery only, no mains connection — DIY is fine. Mains-wired alarms need a REC.
Get advice first
Install solar panels (PV)
Solar PV installation involves connection to your main supply. You'll need an SEAI-registered installer — check their credentials carefully.
Get a periodic inspection or completion cert
Only a REC can carry out the inspection and issue a valid certificate. You can't self-certify.
What counts as restricted work?
Restricted works are defined by the Electricity Regulation Act 1999 and related statutory instruments. In plain terms: any work that involves new wiring, new circuits, or modifications to existing circuits counts as restricted. It must be done by a Registered Electrical Contractor who can certify it.
Landlords have additional obligations beyond standard restricted works rules — see our landlord electrical guide for the details.
What happens if you ignore it?
Unregistered or uncertified work isn't covered by your home insurance. It can invalidate a house sale. And in the event of a fire or injury, there are serious legal consequences. The cert isn't a nicety — it's protection.
Learn about completion certs →Found you need a registered electrician?
Verify them first — then get competitive quotes from registered contractors.
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