We undertake commercial rewiring projects for businesses, commercial properties and refurbishment projects.

Our qualified electricians can lead commercial projects alongside apprentices and coordinate the electrical work according to the requirements of the property and developers.

Commercial Rewiring

Professional Commercial Rewiring for Businesses Across Dublin

A commercial electrical installation needs to be safe, reliable and capable of meeting the demands of a modern working environment. TJ O’Brien Electrical provides professional commercial rewiring services across Dublin, helping businesses upgrade ageing electrical installations, improve safety and bring existing properties up to modern standards. With over 20 years of electrical experience, our team works with businesses, property owners, landlords and contractors to deliver commercial rewiring projects with minimal disruption to day-to-day operations. Get in touch today to discuss your commercial rewiring requirements and arrange a site assessment. Commercial Rewiring Services We provide complete and partial commercial rewiring solutions for a wide range of properties and business premises, including:
Commercial Rewiring Services
We provide complete and partial commercial rewiring solutions for a wide range of properties and business premises, including: Offices, Retail units and shops, Restaurants and hospitality premises, Industrial and warehouse facilities, Schools and educational buildings, Apartment and residential developments, Landlord and managed properties, Commercial renovations and fit-outs.

Older commercial buildings requiring electrical upgrades Whether you require a complete electrical rewire or targeted upgrades to an existing installation, we can assess the property and recommend the most appropriate solution.
Does Your Commercial Property Need a Rewire?
Older electrical installations can become unsuitable as a business's electrical requirements increase.

Signs that your commercial premises may require rewiring or significant electrical upgrades can include: Frequent blown fuses or tripped circuits, Flickering or unreliable lighting, Overheating sockets, switches or electrical equipment, Insufficient sockets for modern equipment, Outdated or overloaded distribution boards, Old or damaged wiring, Electrical equipment regularly causing circuit trips, Previous electrical work that is undocumented or difficult to verify, A building undergoing renovation or change of use.

An electrical installation that has not been inspected for an extended period If you're unsure about the condition of your electrical installation, we can assess the existing system and advise on the work required.
Complete Commercial Rewires
For older or substantially outdated installations, a complete commercial rewire may be the safest and most cost-effective long-term solution.

A commercial rewire can involve replacing existing cabling and circuits throughout the property and upgrading the electrical distribution system to suit the building's current requirements.
Depending on the property, the project may include: New electrical cabling, New circuits and circuit protection, Distribution board upgrades, Socket and switch replacement, Internal and external lighting circuits, Emergency lighting, Fire and smoke alarm wiring, Data and ancillary electrical requirements, Equipment and machinery supplies, Testing and inspection, Certification following completion.

We plan each project around the individual property rather than taking a one-size-fits-all approach.
Partial Rewiring & Electrical Upgrades
Once first fix electrical work is complete, the areas opened up for the new wiring can be made good.

This may involve: Filling chases, Repairing damaged plaster, Patching walls, Preparing surfaces for decoration.

The exact level of making good depends on the property and the agreed scope of work. In older Dublin houses, particularly properties with lath-and-plaster or delicate original finishes, additional care may be needed. It's worth discussing plastering and decorating before work begins so everyone is clear about what is included.
Electrical Testing and Certification
Testing is an important part of any commercial electrical installation.

Following electrical work, appropriate inspection and testing is carried out to verify that the installation is operating safely and correctly.

TJ O’Brien Electrical is Safe Electric registered and QC certified for testing, providing businesses with confidence that their electrical work is being carried out by experienced professionals.

Where applicable, the required certification and documentation can be provided following completion of the works.

Commercial Electrical Contractors Dublin
Commercial Electrical Contractors in Dublin We work with businesses and property owners throughout Dublin and surrounding areas. Our commercial electrical services can support projects ranging from smaller retail and office premises to larger commercial properties and refurbishment projects. If you're a: Business owner Property manager Landlord Main contractor Building contractor Facilities manager Developer we can work with you to plan the electrical requirements for your project.

Why choose TJ O’Brien Electrical?

Trusted electrical expertise for commercial and domestic projects.

Over 20 years’ experience

Our team brings more than two decades of electrical experience to commercial and domestic projects.

Qualified electrical team

Our workforce includes qualified electricians and apprentices working under experienced supervision.

Safe Electric registered

We are Safe Electric registered, giving customers confidence that electrical work is undertaken by a registered electrical contractor.

QC certified for testing

Our QC certification supports the inspection and certification requirements of commercial projects.

Quality workmanship

We focus on safe, reliable electrical installations and deliver a professional service from initial assessment through to completion.

Clear communication

We keep clients informed throughout the project and aim to make the process as straightforward as possible.

Electrical services

House Rewires

House Rewiring House rewiring is one of our primary areas of work. We carry out domestic electrical rewiring for houses, apartments, renovations and older properties throughout ...
Find out more : House Rewires

Commercial Rewires

We undertake commercial rewiring projects for businesses, commercial properties and refurbishment projects. Our qualified electricians can lead commercial projects alongside app...
Find out more : Commercial Rewires

Consumer Unit Upgrades

The consumer unit is an important part of a property's electrical installation. If your consumer unit is outdated, damaged or unsuitable for the requirements of the property, an...
Find out more : Consumer Unit Upgrades

Electrical Testing

Electrical Testing T J O'Brien Electrical provides electrical testing services for domestic and commercial customers. We are QC certified for testing. Testing requirements can v...
Find out more : Electrical Testing

Smoke & Heat Alarms

Smoke & Heat Alarms We install smoke alarms and heat alarms as part of domestic and other electrical projects. If you're renovating, rewiring or upgrading a property, we can...
Find out more : Smoke & Heat Alarms

EV Charger Installation

EV Charger Installation Ireland | SEAI Grant Up to €300 Safe, Certified EV Charger Installation by TJ O’Brien Electrical Thinking about installing an electric vehicle charger at...
Find out more : EV Charger Installation