Do you provide certification and test reports for commercial installations?

All installations and significant modifications come with full test documentation and certification. As NAPIT‑accredited electricians we issue compliance paperwork aligned to BS 7671 and provide certificates required by insurers and building owners.

Can you design and install three‑phase power for industrial equipment?

Yes. We assess load requirements, distribution needs and earthing arrangements, then provide design, installation and verification for three‑phase supplies. We also coordinate with plant installers and electrical consultants where projects demand.

Do you offer ongoing maintenance contracts for commercial properties?

We offer tailored maintenance programmes that include periodic inspection and testing, planned preventative maintenance and agreed response times for callouts. Programmes are scalable for single units or multi‑site portfolios.

Can you upgrade lighting and advise on energy savings for my business?

Absolutely. We deliver LED retrofits, lighting controls and intelligent systems that reduce energy use and improve light quality. Where appropriate we model payback and can integrate upgrades with solar PV, battery storage and EV charging for broader energy savings.

Our Services

Commercial Electrical

Full commercial electrical services for offices, retail and industrial sites — installations, maintenance programmes, lighting upgrades, data cabling and three‑phase power solutions delivered to industry standards.

Our Accreditations

Certified & Accredited

About This Service

Commercial Electrical Specialists with 15 Years Experience

40+ Google reviews show local businesses trust our work across Crawley and the South East. D.Jones provides full commercial electrical services — from new installations and three‑phase upgrades to planned maintenance and data cabling — with NAPIT accreditation and 15+ years' hands‑on experience. We focus on compliance, minimal downtime and practical system design to keep sites operating safely and efficiently.

Why Choose us for Commercial Electrical?

Compliance-led, certified work

NAPIT accreditation and Constructionline Silver mean installations meet industry standards and come with appropriate certification and test documentation.

Commercial capacity with local knowledge

Family-run with 15+ years' commercial experience, we handle retail fit‑outs, office refurbishments and industrial three‑phase upgrades across a 25–50 mile radius from Crawley.

Energy and renewables integration

Practical experience installing LED lighting, EV chargers, solar PV and battery storage lets us optimise systems for lower running costs and future net‑zero plans.

How It Works

Site survey & compliance review

We inspect the premises, assess existing systems and record electrical loads, access and compliance risks — then produce a written proposal aligned to BS 7671 and client timescales.

Planned installation & testing

Our NAPIT‑accredited electricians complete installations or upgrades with staged handovers, fixed‑time works and full electrical testing, issuing certification and test reports on completion.

Maintenance & support

Choose a tailored maintenance programme or reactive cover. We provide scheduled PPM, emergency response and documented asset registers to keep insurers and landlords satisfied.

Frequently Asked Questions

Yes. We plan commercial works to suit your operational hours and offer out‑of‑hours and phased shutdowns for critical systems. Before any job we agree a timetable and isolation plan to minimise impact on staff and customers.

What Our Customers Say

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“Daniel is very good at ensuring you get the right advice and takes his time to explain all the details which gives you confidence in what he is doing. Very good service.”

Rukshana Chenoy

“I contacted various electricians for a wall charger installation. Daniel was the only one which called back and gave very professional advice, which filled me with confidence. He then supplied an estimate promptly with a very reasonable cost. We booked the work and was kept up to date via text messages. The team arrived right on time and carried out the work in a very professional manner. We encountered a problem with my fuse board and Daniel went above and beyond to resolve this. Fantastic service from start to finish. Will definitely use again and recommend to all. Thanks Dan”

Steve Hooper

“Had a new bigger fuse box installed along with a EV charging point as well as some tricky cabling for a garden office to be installed at a later date. Polite, professional clean and tidy workmanship. Would recommend.”

Kathy Aston-dive

“Excellent service. Needed a new plug socket installing as I have just moved in to new property. Dan sourced the matching socket, installed, tested and basically completed the job as desired. Very much appreciated :)”

Martin Stephens

“Highly recommended. Dan and the team undertook multiple works for us and completed to a very high standard. Nothing was too much trouble and their years experience clearly showed. Very happy with the end product and would choose them again!”

Jordan’s Account

“It is very nice to wake up to a lovely warm house.Thank You very much for everything.”

Helen Barker

Arrange a commercial site survey

Book a free site assessment with our NAPIT‑accredited team in Crawley and the South East. Call 07858 473 659 or email info@djones-services.co.uk to arrange a time.

Request a Survey