Commercial Electrical Contractors Specialising in Office Fit-Outs & Commercial Developments

With over 15 years of industry experience, Phase Electrical Engineering is a commercial electrical contractor delivering high-quality electrical installations, testing, design coordination, and project support for office fit-outs and commercial developments. We work closely with main contractors, developers, and site project teams to deliver safe, compliant, and programme-driven electrical solutions, from initial installation through to final testing and handover.

about us

Who we are

Phase Electrical Engineering is a commercial focused electrical contractor specialising in office fit-outs, commercial refurbishments, and development projects.

Founded in 2021, we have built a reputation for quality workmanship, reliability, and professional project delivery. With over 15 years of industry experience, our team has delivered a vast range of commercial electrical projects — from CAT A and CAT B office fit-outs to large scale commercial installations, public sector works, and mixed use developments.

We understand the demands of commercial construction environments and the importance of clear communication, coordination, and programme certainty. Our team works proactively alongside project managers and site teams to ensure projects are delivered safely, efficiently, and in line with agreed programmes.

Safety and compliance are at the core of everything we do on site. Our fully qualified electricians, including 2391-certified testers, ensure all works meet current regulations and industry standards. Every project is completed with thorough testing, clear documentation, and a professional handover process.

Phase Electrical Engineering was founded by Alex Kyselak, an experienced electrician and electrical manager with a strong background in commercial, public sector, and large scale projects. His practical, hands-on approach and commitment to high standards underpin the way we deliver every project.

What We Offer

Phase Electrical Engineering delivers complete electrical packages for office fit-outs and commercial developments, providing safe, compliant, and future ready installations.

  • Office Fit-Out Electrical Installations: CAT A and CAT B office fit-outs including power, lighting, containment, structured data cabling, access control, emergency lighting, fire alarm systems, and DALI smart lighting controls.
  • Commercial Power & Lighting Systems: Installation of power distribution, small power, general and feature lighting, cable containment, and smart lighting control systems for modern commercial environments.
  • Life Safety, Fire Alarm & Access Control Systems: Installation and coordination of life safety systems including emergency lighting, fire alarm systems, and access control infrastructure, integrated to meet current British Standards and fire safety requirements.
  • Testing, Inspection & Certification: Electrical Installation Certificates (EICs), Electrical Installation Condition Reports (EICRs), emergency lighting testing, fire alarm testing support, and full handover documentation to ensure compliance and safety.
  • Sub-Mains & Power Distribution: Installation of sub-mains, busbar systems, and power distribution infrastructure designed for flexibility and future expansion.
  • External Power & Lighting: External power and lighting installations supporting commercial developments and external areas.
  • Electrical Maintenance & Aftercare: Planned preventative maintenance, reactive repairs, fault finding, and ongoing compliance testing for commercial premises.
Commercial Electrical Design & Specification
Full design and planning for retail, office, and industrial spaces.
Office & Retail Fit-Outs
Complete electrical solutions for businesses and commercial clients.
coverage

Where We Work

Based in Aylesbury, we undertake all commercial and public sector work. Our services are available across Oxfordshire, Buckinghamshire, Hertfordshire and London.

portfolio

Featured work

Office & Retail Fit-Outs​
Commercial Electrical Design & Specification

Testimonials

Our Reviews

5/5
Great service from start to finish, very professional and punctual. Handled both our office and home electrical issues with ease. Would definitely recommend for any future projects!
Mark Reynolds
Client
5/5
Excellent job rewiring our kitchen and fitting new office lights. Friendly team, explained everything clearly. Reliable and tidy throughout. Very happy with the work done!
Sandra Lewis
Client
5/5
Prompt, polite and efficient. Called them for a domestic issue and later used them for our store refit. Superb attention to detail. Couldn’t ask for more, thanks again!
Daniel Shaw
Client

Contact Us

Why Choose Phase Electrical Engineering?

  • Over 15 years of commercial electrical experience
  • Fully managed electrical packages covering power, lighting, fire alarms, data, and access control
  • Specialists in office fit-outs, refurbishments, and commercial developments
  • High-quality workmanship and professional finishes
  • Fully qualified electricians and 2391-certified testers
  • Safety-led, compliant, and programme-driven delivery
  • Clear communication and professional handovers

Discuss Your Commercial Project & Request a Quote

If you are planning an office fit-out, refurbishment, commercial development, or upgrades to existing electrical systems, speak to a reliable electrical contractor with proven commercial experience.