New Build Electrical Services | First Fix to Sign-Off | C-Lec Electrical
New Build • Self-Build • Developer

New Build
Electrical Services

Full first fix and second fix electrical work for new builds, self-builds, extensions and developer projects. Smart home wiring, Cat6 data networking, EV charger first fix and Solar PV ready cabling all built in. NAPIT registered with full Building Control sign-off included.

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Scope: First Fix to Sign-Off
Compliance: BS 7671 18th Edition
Approval: NAPIT & Part P Approved
At a glance

We handle complete electrical packages on new builds, self-builds and developer projects from initial cable design through to final building control sign-off. First fix runs done before plastering, second fix completed after decoration with full system commissioning. Every property comes with future-proofed infrastructure as standard: smart home compatible wiring, Cat6 data networking, EV charger first fix and Solar PV ready cabling. NAPIT registered for fast self-certified Part P sign-off, no waiting on building control inspections.

Why this matters

A new build is the only time the wiring is easy to get right

Once the plasterboard goes on, every cable run becomes a major job. Adding sockets, smart switches, cooker circuits or Cat6 data after a build is finished costs five times what it would have during first fix. Get the design right at the start and you have decades of pain-free upgrades ahead. Get it wrong and you spend the next 30 years working around it.

We design first fix wiring with future-proofing built in: spare conduits, EV ready cabling to the front of the property, Solar PV cable run to the loft, Cat6 data to every TV point and every desk and smart-switch compatible lighting throughout. The cost difference at first fix is minimal. The cost difference later is enormous.

  • Future-proofed first fix as standard, not an upgrade option
  • EV charger cable run from main board to outside wall
  • Solar PV ready cable from the loft to consumer unit position
  • Cat6 ethernet to every TV, desk and home office point
  • NAPIT competent person sign-off, no waiting on building control
First Fix Future-Proofed Wiring Built Into Every Property
NAPITRegistered
Part PSelf-Certify
EV ReadyAs Standard
PV ReadySolar Cable Built In
BS 7671 18th Edition Certified
Why it pays at first fix

The cost difference is huge
once the walls are closed

Future-proofing during first fix costs pennies. Adding it after completion costs thousands. The smart move is to plan it in from day one.

5xcost

Post-Build Retrofit

Adding wiring after the property is finished costs around five times the first fix price because of plaster damage, decoration, channel chasing and dust protection.

7kWEV

Standard EV Charger Load

A standard 7kW home EV charger needs a dedicated 32A circuit with its own RCD. We run the cable as part of first fix so the charger fits in 30 minutes later.

Cat610G

Future Network Standard

Cat6 cabling supports 10Gbps networking and easily handles 4K streaming at multiple TV points. Far better than relying on WiFi which struggles with thick walls.

30days

NAPIT Sign-Off Window

NAPIT building control registration completed within 30 days of project completion. Compliance certificate issued for solicitor and warranty pack.

What we install

Every electrical scope
covered on the project

First Fix Wiring

All cables run before plastering: lighting circuits, ring mains, dedicated cooker and shower circuits, smoke alarm wiring and consumer unit feed. Sized for actual loads and future expansion.

Quoted on plans

Second Fix & Sign-Off

Sockets, switches, light fittings, smoke alarms, consumer unit and shower units fitted after decoration. Full system test, EIC certificate and Part P notification through NAPIT.

Quoted on schedule

Smart Home Wiring

Smart-switch compatible cabling for Lutron, Shelly, Philips Hue and KNX systems. Dimming-ready, scene-ready and app-ready from day one even if smart switches added later.

Standard inclusion

Cat6 Data Networking

Cat6 ethernet to every TV point, home office, study and master bedroom. Patch panel in the cupboard or loft. Supports 10Gbps for current and future network needs.

From £65 per drop

EV Charger First Fix

Dedicated 7kW or 22kW cable run from consumer unit to outside wall during first fix. Charger itself can be fitted same day or any time later in 30 minutes.

From £185 first fix only

Solar PV Ready Cabling

Cable run from loft to consumer unit position during first fix. Inverter location prepared. Adding solar panels later is then plug-and-play, no plasterboard ever cut.

From £145 first fix only
How it works

From plans to sign-off
in five clear stages

1

Design Stage

We review architect plans, mark up cable runs, agree socket and switch positions and confirm circuit design with you and the builder.

2

First Fix

All cables run, back boxes fitted, conduits installed for future-proofing. Done before plasterers arrive on site so nothing holds up the trade sequence.

3

Pre-Plaster Test

First fix tested for continuity, insulation resistance and physical positioning. Photos taken of every cable run for the project record before plasterers cover them.

4

Second Fix

After decoration: sockets, switches, light fittings, consumer unit, smoke alarms and any smart switch fitments. Coordinated with kitchen fitters and bathroom fitters.

5

Test & Certify

Full BS 7671 testing, EIC certificate issued, NAPIT building control sign-off within 30 days. Compliance pack handed to builder for solicitor and warranty file.

Got a build coming up?

Plans Reviewed,
Fixed Quote

Send us your architect plans or a sketch of the layout. We will review and come back with a fixed-price quote covering first fix, second fix, future-proofing scope and all certification.

Self-builders • Developers • Extensions • Conversions
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Common mistakes

New build wiring mistakes
you only spot years later

Mistakes we see on new builds and self-builds. Some are bad enough to fail building control, most just make the property a pain to live in or upgrade later.

!Not Enough SocketsBare minimum, no spare capacity
!No EV Cable RunAdding it later costs 5x
!No Cat6 NetworkWiFi only, dies in thick walls
!Switches In Wrong PlaceBehind doors or far from beds
!No Outdoor SocketsGarden BBQ on extension lead
!Single Socket BedroomsTwo charging phones, no room
!No PV Ready CableSolar later means walls being chased
!Sockets Behind FurnitureInaccessible after fitout
!No Smart Switch WiringNo neutral at switch positions
!Garage Single CircuitCannot run charger and tools at once
!No Building ControlCompliance issues at sale time
!Cheapest Consumer UnitWylex throwaway, not RCBO per circuit

If your project is at design stage. We can stop these before they happen.

Why C-Lec

Designed for the
next 30 years

Future

Future-Proofed Wiring

EV charger cable, Solar PV ready cabling, Cat6 data and smart switch wiring built in as standard. No retrofitting later.

Coord

Works With Trades

We coordinate first fix and second fix around the build sequence. Plasterers, kitchen fitters, plumbers and bathroom fitters never wait on us.

NAPIT

Self-Certify Sign-Off

NAPIT competent person registration means we self-certify under Part P. Compliance pack ready in 30 days, no separate building control fee.

Trust

Direct Communication

You deal with the same engineer from design through to sign-off. No call centre, no being passed around. One phone number, one named person.

Areas we cover

Local cover across
Bedfordshire, Bucks & beyond

We are based in Bedford and cover the wider region for domestic and commercial work. The majority of our jobs come from these towns:

MKBedford & Surrounding Villages MKMilton Keynes (All Postcodes) MKKempston & Wixams MKAmpthill & Flitwick NNNorthampton NNWellingborough & Rushden LULuton & Dunstable LULeighton Buzzard SGBiggleswade & Sandy PESt Neots & Huntingdon HPAylesbury & Tring CBCambridge Outskirts
Frequently asked

New build electrical questions, answered fast

How much does a full new build electrical install cost?
A typical 3 bedroom new build first fix and second fix electrical package starts from around £6500 to £9500 depending on the layout, level of future-proofing included and whether smart switches, Cat6 networking and EV cable runs are part of the scope. Larger 4 and 5 bedroom builds generally £10,000 to £15,000. Always quoted on the actual architect drawings or a sketch layout.
Do I need building control sign-off?
Yes. Any new build electrical install is notifiable under Part P of the Building Regulations. We are NAPIT registered which means we self-certify under the competent person scheme. The notification is sent to your local council automatically within 30 days. The compliance certificate forms part of the property's warranty pack and is required by solicitors at sale.
What is first fix and second fix?
First fix is all the cabling, back boxes and conduits installed before the plasterers arrive. The wiring sits inside the wall ready for terminations later. Second fix is everything you can see: sockets, switches, light fittings, consumer unit, smoke alarms and shower units, all done after the decoration is finished.
Can you work to architect drawings?
Yes. Send us the floor plans (architect plans, builder sketches or even hand-drawn layouts) and we will mark up cable runs, agree socket and switch positions and quote against the plans. Most self-build clients also walk through the site once frames are up to confirm exact positions before first fix begins.
Should I include EV charger cable now or later?
Always now. Running the EV cable during first fix costs around £185. Doing it after the property is finished costs around £750 to £1200 because of channel chasing, plaster reinstatement and decoration. Even if you have no EV today, run the cable. The charger itself can be fitted in 30 minutes whenever you want.
Do you handle solar PV?
We don't fit the panels themselves but we run the cable from the future inverter location (typically loft or garage) to the consumer unit during first fix. This makes adding solar panels later a straightforward installation rather than a major retrofit. We work with several local solar installers we trust if you want a referral.
What about smart home wiring?
We wire smart-ready as standard which means a neutral at every switch position, sufficient cable depth in back boxes for smart switches and dimming-compatible lighting circuits. Whether you fit smart switches at second fix or upgrade in 5 years, the wiring supports it. Lutron RA3, Shelly, Philips Hue and KNX systems all compatible.
Do you work for developers as well as self-builders?
Yes. We work with self-builders, small developers and extensions and conversions across Bedfordshire, Bucks, Northants and Cambridgeshire. Pricing for developer schemes is per plot with consistent specifications across the development. Volume discounts on schemes of 4+ plots.
Discuss your project

New Build Electrics,
Designed for Decades

Send us plans or call to discuss your project. Free written quote covering first fix, second fix, future-proofing scope and all certification. Self-builders, developers and extensions all welcome.

Call Today Get a Quote