Electrical Rewiring Costs in Ireland (Complete Homeowner Guide)
- Colum Gallagher
- Feb 24
- 4 min read
Updated: 7 days ago
Rewiring a house is one of the most important electrical upgrades you can make. In many Irish homes—especially properties built before the 1980s—the wiring may no longer meet modern safety standards or support today’s energy demands.
In this guide, we’ll break down electrical rewiring costs in Ireland, what affects the price, grants that may help (including the derelict home grant), and what homeowners should expect during the process.
What Is a Full House Rewire?
A full rewire involves replacing the electrical cabling and upgrading key parts of the electrical system, including:
New electrical wiring throughout the property
New sockets and switches
Modern consumer unit / fuse board
Earthing and bonding upgrades
Smoke / heat alarm wiring
Testing and certification
Older homes across Ireland often still contain outdated wiring that may not be safe or capable of handling EV chargers, heat pumps, or modern appliances.
Average Electrical Rewiring Costs in Ireland
The cost of rewiring depends on the size, condition, and accessibility of the property.
Typical price ranges
Property Type | Average Cost |
1–2 bed apartment | €4,000 – €7,000 |
3 bed semi-detached | €6,000 – €10,000 |
4 bed semi-detached | €8,000 – €12,000 |
Detached home | €10,000 – €18,000+ |
These figures generally include:
Labour
Materials
New fuse board
Standard sockets and switches
Electrical certification
However, final costs depend on several factors.
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Factors That Affect Rewiring Costs
1. Size of the Property
More rooms require more circuits, cabling, and labour.
2. Access to Walls and Floors
Homes undergoing renovation are cheaper to rewire because walls and floors are already open.
3. Consumer Unit Upgrade
Modern regulations usually require a new fuse board with RCD/RCBO protection.
4. Additional Electrical Upgrades
Costs increase if homeowners add:
EV charger wiring
Heat pump supplies
Garden power
Smart home systems
Extra sockets or lighting
5. Age of the House
Very old houses may require additional earthing, bonding, and safety upgrades.
Signs Your House May Need Rewiring
Many Irish homes still operate on outdated electrical systems. Warning signs include:
Frequent tripping circuits
Burning smells from sockets
Flickering lights
Rubber or fabric insulated cables
No RCD protection
Very few sockets in rooms
If your home was wired more than 30–40 years ago, it may be worth getting an inspection from a qualified electrician.
Can Energy Grants Help With Electrical Work?
While rewiring itself is usually not directly funded, electrical work may be required as part of energy upgrades supported by the Sustainable Energy Authority of Ireland.
For example, electrical upgrades may be needed when installing:
Heat pumps
Home energy upgrades
These electrical improvements are often included within the broader project cost.
The Derelict Home Grant and Electrical Upgrades
Ireland currently offers financial support for renovating vacant and derelict properties through the Vacant Property Refurbishment Grant, administered by the Department of Housing, Local Government and Heritage.
Grant amounts
Up to €50,000 to renovate a vacant property
Up to €70,000 for a derelict property
Electrical rewiring is typically an eligible renovation cost under this scheme.
This means homeowners restoring older properties can often include:
Full electrical rewiring
Fuse board upgrades
Electrical safety works
As part of their claim. The grant is especially relevant for rural homes and older properties across Ireland where electrical systems are no longer safe.
The National Residential Retrofit Plan and Electrical Rewiring
Ireland’s National Residential Retrofit Plan is a government strategy designed to upgrade homes so they are warmer, more energy-efficient, and cheaper to run. The programme supports measures such as insulation, heat pumps, solar panels and full home energy upgrades through grants and financing supports.
While electrical rewiring is not usually a grant-funded measure on its own, it often becomes an important part of retrofit projects. Older homes may need a modern electrical system before installing technologies like:
Heat pumps
EV chargers
Smart heating controls
During a deep retrofit, electricians may upgrade the consumer unit, install new circuits, and ensure the home meets modern safety standards so it can support these energy upgrades.
The retrofit plan also introduced supports such as retrofit grants and low-cost loans to make home upgrades easier and more affordable for homeowners.
Ireland aims to retrofit hundreds of thousands of homes to a B2 Building Energy Rating (BER) by 2030, meaning many properties will undergo significant upgrades — including electrical improvements where required.
For homeowners planning a major renovation, rewiring the property at the same time as insulation, heating upgrades, or solar installation can be more cost-effective and future-proof the home.
What Happens During a House Rewire?
A typical rewire follows several stages:
1. Initial Inspection
An electrician assesses the existing system and plans circuits.
2. First Fix
Cables are installed in walls, floors, and ceilings before plastering.
3. Second Fix
Sockets, switches, lights, and the consumer unit are installed.
4. Testing and Certification
The system is tested and certified to ensure it meets Irish electrical regulations.
Depending on the property size, a full rewire usually takes 5–10 days.
Is Rewiring Worth It?
Although rewiring can seem expensive, it provides several benefits:
Improved safety
Compliance with modern regulations
Increased property value
Capacity for modern appliances
Preparation for EV chargers and solar panels
For older homes, it’s often one of the most important upgrades during renovation.
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Frequently Asked Questions
Most rewires cost between €6,000 and €12,000 for a typical semi-detached home, depending on access, upgrades, and property size.
How long does a full house rewire take?
Most homes take about one week, though large or complex houses may take longer.
Do I need to move out during a rewire?
In many cases yes. Rewiring can involve lifting floors, chasing walls, and temporary power shutdowns.
Is rewiring covered by grants in Ireland?
Direct grants for rewiring alone are rare, but electrical work may be covered within renovation grants such as the Vacant Property Refurbishment Grant.
How often should a house be rewired?
Most homes should be inspected every 10 years, and many older homes require rewiring after 30–40 years.
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