★★★★★5.0 · 17 Google reviews

New builds & first fix

From bare walls to signed off.

Self-builds, extensions and renovations wired from first fix to final certificate — including underfloor heating, ventilation and data.

Discuss your build Our work

First fix to final fix

Your build, wired to plan.

We work from your drawings (or help you plan the layout), install a clean first fix, then return for second fix, testing and handover.

First & second fix wiring
Consumer units & supplies
Electric underfloor heating
Ventilation, extraction & PIV
Data, networking & TV
Full certification & handover

What we install

Everything behind the walls.

First fix wiring

Cables, back boxes and containment set out to plan.

Underfloor heating

Electric UFH mats and manifolds, wired and controlled.

Ventilation & extraction

Extractor fans, ducting, core drilling and PIV.

Second fix & test

Accessories, boards, full testing and certificates.

Planned & precise

Set out right, first time.

Careful first fix around steels, skylights and structure means a clean second fix and no surprises when the walls close up.

See new-build work →

How it works

From plans to handover.

01Plan & specWe work from your drawings or help you plan.

02First fixClean cabling before plaster.

03Second fixAccessories, boards and controls.

04Test & certifyFull testing and certification.

FAQ

New build questions.

Can you work from an architect’s drawings?

Absolutely — we work from your electrical drawings, or help you plan socket, lighting and data positions if you don’t have them yet.

Do you do underfloor heating and ventilation?

Yes — electric underfloor heating, extractor fans, insulated ducting, core holes and PIV all fit naturally into our first fix.

Do you certify the whole installation?

Yes, the finished installation is fully tested and handed over with the correct certification for Building Control.

Get a quote

Planning a build or extension?

Share your plans and timescales — we’ll spec and price the electrical works.

✓ NAPIT registered & TrustMark accredited
✓ Fully insured, every job certified
✓ Free, no-obligation quotes
✓ Mid Somerset & surrounding areas

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DS Electrical Installations (SW) Ltd will call you back to talk through the job.