Old or faulty electrical wiring is one of the leading causes of house fires in Ireland. If your home is more than 25-30 years old and hasn't been rewired, it's worth knowing the warning signs — and what to do about them.

⚡ Important Safety Note

If you notice any of the serious warning signs below (burning smells, sparks, hot sockets), turn off the power at the main fuse board and call an electrician immediately. Don't attempt DIY electrical work — it's illegal and dangerous.

Warning Signs Your Home Needs Rewiring

🔴 Urgent Signs (Call an Electrician Today)

Burning smell: A persistent smell of burning plastic or rubber
Sparks: Visible sparks when plugging in or switching on
Hot sockets or switches: Warm to touch when not in use
Scorch marks: Brown or black marks around sockets or switches
Frequent electric shocks: Tingling when touching appliances
Crackling or buzzing: Sounds from sockets or the fuse board

🟡 Concerning Signs (Book an Inspection)

Frequently tripping breakers: More than occasional trips
Flickering lights: Not caused by bulbs or fixtures
Old fuse board: Rewirable fuses instead of MCBs (see below)
Two-pin sockets: Pre-date modern safety standards
Fabric-covered cables: Common in pre-1960s houses
Aluminium wiring: Used briefly in the 1970s
No RCD protection: Your board should have one

🟢 Signs to Monitor

Age: Wiring over 25-30 years old
Not enough sockets: Relying heavily on extension leads
No earthing: Older installations may lack proper earthing
DIY additions: Previous amateur electrical work

Understanding Your Fuse Board

Your fuse board (consumer unit) tells you a lot about your wiring's age:

Type	Era	Status
Rewirable fuses (wire in porcelain holder)	Pre-1960s	Replace urgently
Cartridge fuses	1960s-1980s	Consider upgrading
MCBs (switches that flip)	1980s onwards	May be adequate
MCBs + RCD protection	Modern	Current standard
RCBO per circuit	Modern premium	Best protection

Rewiring Costs in Ireland

A full house rewire typically costs between €4,000 and €12,000, depending on the size and complexity of your home.

Property Type	Typical Cost
1-2 bed apartment	€3,500 – €5,500
3-bed semi-detached	€5,000 – €8,000
4-bed detached	€7,000 – €10,000
Large/period home	€10,000 – €15,000+

What Affects the Cost?

Property size: More rooms = more circuits = higher cost
Access: Solid floors and difficult access add labour
Extent of work: Full rewire vs. partial upgrade
Finish required: Making good walls adds cost
Specification: Number of sockets, lighting points, special circuits
Location: Dublin electricians typically charge more

What's Included in a Rewire?

A full rewire typically includes:

New consumer unit (fuse board) with RCD protection
New cables throughout the house
New sockets and light switches (often white plastic; premium finishes extra)
New light fittings (basic pendants; you may want to upgrade)
Earthing and bonding brought up to standard
Smoke alarm circuit (mains-powered, interlinked)
Testing and certification
Safe Electric completion certificate

Do You Need a Full Rewire?

Not always. An electrical inspection can determine whether you need:

Full rewire: Complete replacement of all wiring
Partial rewire: Replace problem circuits only
Consumer unit upgrade: New board with modern protection
Additional circuits: Add capacity without full rewire
Remedial work: Fix specific issues identified in inspection

An ECIR (Electrical Condition Inspection Report) costs €150-300 and gives you a clear picture of your wiring's condition.

The Rewiring Process

Initial inspection: Electrician assesses the existing installation
Quote and planning: Agree scope, socket/light positions, timeline
First fix: New cables run through walls, floors, ceilings
Making good: Plastering and decorating (often separate contractor)
Second fix: Sockets, switches, and fittings installed
Testing: All circuits tested to regulations
Certification: Safe Electric certificate issued

How Long Does a Rewire Take?

Apartment: 3-5 days
3-bed house: 5-8 days
4-bed house: 7-10 days
Plus plastering/decorating time

You can usually stay in the house during a rewire, but there will be disruption and periods without power.

Safe Electric Registration

In Ireland, all electrical work must be carried out by a Safe Electric registered contractor. This ensures:

Work meets national safety standards (ET 101)
Proper testing and certification
Insurance validity (unregistered work can void your policy)
Consumer protection if things go wrong

Verify registration at safeelectric.ie before hiring any electrician.

Questions to Ask Your Electrician

Are you Safe Electric registered? (Verify independently)
What exactly is included in the quote?
How many sockets/lights are included?
What type of consumer unit will be installed?
Who handles plastering/making good?
What's your timeline?
Do you provide the completion certificate?
What warranty do you offer on workmanship?

Selling a House with Old Wiring

If you're selling a house with old wiring:

Buyers' solicitors often request an electrical safety certificate
Mortgage lenders may require one before approving a loan
Old wiring can affect sale price or cause sales to fall through
Getting an ECIR before listing helps you know where you stand

Investing in a rewire before selling often adds more value than it costs, and makes the sale smoother.

Buying a House: What to Check

Before buying an older property:

Ask to see any electrical certificates
Look at the fuse board type
Check for obvious warning signs
Request an electrical survey as part of due diligence
Factor rewiring costs into your offer if needed

Signs You Need to Rewire Your House in Ireland