Electrical & Mechanical Works

Electrical and mechanical services sit at the heart of every commercial fitout and refurbishment. Because they affect everything from how your team works day to day to whether your building meets its compliance obligations, getting them right is not optional. At Commercial Building Solutions, we design and install electrical and mechanical services for commercial buildings across Portsmouth, Hampshire and the South Coast, so your building works the way it should from the moment you move in.

Why Choose Commercial Building Solutions for Your Electrical & Mechanical Works?

Electrical and mechanical works require careful coordination with every other element of a fitout or refurbishment. Because we deliver partitions, ceilings, flooring and building works on the same projects, our electrical and mechanical team works directly alongside our other trades rather than being managed separately. That means fewer programme clashes, cleaner interfaces between systems and a better finished result.

We’ve been delivering electrical and mechanical installations in commercial buildings across Portsmouth and Hampshire for over twenty years. Since we manage the full scope ourselves, you deal with one contractor throughout and avoid the gaps and miscommunications that come with splitting services across multiple companies.

Why Businesses Choose Commercial Building Solutions

Every electrical and mechanical project starts with understanding how the building is used and what the services need to deliver. Because requirements vary significantly between a small office refurbishment and a full Cat A fitout, we take the time to understand the brief properly before we design anything. That way, the systems we install are right for the building and the business using it.

Recent Projects

What's Included in our Electrical & Mechanical Works?

We deliver a full range of electrical and mechanical services for commercial buildings, covering everything from initial design through to installation, testing and commissioning. Here’s what we typically cover:

Electrical Design and Installation

We design and install electrical systems for commercial buildings, covering power distribution, containment, final circuits and all associated infrastructure so your building has the capacity and flexibility it needs.

Lighting Design and Installation

We specify and install commercial lighting systems that balance energy efficiency, light quality and aesthetics, including LED upgrades, sensor controls and emergency lighting throughout.

Power and Data Distribution

We install power and data outlets, floor boxes and containment systems to suit your workspace layout, so every desk and workstation has the connections it needs without cables running across the floor.

Air Conditioning and Ventilation

We supply and install commercial air conditioning and ventilation systems, including VRF, split and multi-split systems, designed to keep your building comfortable and properly ventilated throughout the year.

Heating Systems

We install and commission commercial heating systems that provide reliable, efficient warmth across your building, coordinated with the wider mechanical services design.

Fire Alarm Systems

We design and install commercial fire alarm systems that meet current standards and integrate properly with the building’s layout, so every area of the premises is covered.

Emergency Lighting

We install emergency lighting systems throughout commercial buildings so that all escape routes are properly illuminated and your building meets its compliance obligations.

Testing, Commissioning and Certification

Once all electrical and mechanical works are complete, we test, commission and certify every system so you receive full documentation and the confidence that everything has been installed to the required standard.

How We Deliver Your Electrical and Mechanical Works in Portsmouth

Every project starts with a detailed review of your requirements. Once we understand the scope of the electrical and mechanical works, we carry out a site survey and produce a clear, itemised quotation covering design, supply, installation, testing and commissioning.

Before work begins, we coordinate the services design with the wider project programme so that electrical and mechanical installations happen in the right sequence alongside partitions, ceilings and any other trades involved. Because poor coordination between services and building fabric is one of the most common causes of programme delays and cost overruns, we manage this carefully on every project.

On site, our team works efficiently and to a consistently high standard, keeping the work area clean and maintaining safe access throughout. When all installations are complete, we test and commission every system before handing over the full certification pack, so you know exactly what’s been installed and that it’s been done properly. If you’re based in Portsmouth, across Hampshire or anywhere on the South Coast and you need electrical or mechanical services for a commercial building, get in touch to discuss your project. You can also read more about our wider fitout and refurbishment capability in Our Work.

Frequently Asked Questions

Yes. We deliver electrical and mechanical services under a single contract with one point of contact, so you don’t need to manage separate contractors or coordinate between them yourself.

Yes. We regularly carry out electrical and mechanical installations in occupied commercial buildings across Portsmouth and Hampshire. Because we plan the works carefully around your business operations, we keep disruption to a minimum throughout.

Yes. All electrical installations we carry out comply with BS 7671, the current edition of the IET Wiring Regulations. We provide full test certificates and documentation on completion so you have a complete record of the installation.

Yes. Where the existing installation has the capacity to support your requirements, we carry out targeted upgrades, additions and modifications rather than replacing everything from scratch.

Yes. We supply and install commercial air conditioning systems, including VRF, split and multi-split configurations. Because we coordinate mechanical and electrical works ourselves, the installation is planned and delivered as a single, integrated process.

We deliver electrical and mechanical services across Portsmouth, Hampshire and the wider South Coast, including Havant, Chichester, Southampton and Brighton.

Our Process

Ready to transform your workspace?

We support businesses with office refurbishments, interior updates, relocations, partitions, ceilings, flooring and full project management.


Contact us today to discuss your requirements and get expert guidance from our team.

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