New Electrical Installations & Extensions in Chesterfield, Derbyshire

Whether you’re building a new property or adding an extension, S W Electrical Works Ltd provides fully compliant electrical design and installation services across Derbyshire, Nottinghamshire, and South Yorkshire. Our qualified electricians ensure your system is correctly designed, safely installed, and future-ready — all in accordance with BS 7671 Wiring Regulations.

Complete Electrical Systems for New Builds and Extensions

Every new home, business premises, or property extension requires a professionally designed electrical system.
At S W Electrical Works Ltd, we handle the entire process — from initial design and circuit calculations to full installation and certification.
Our electricians ensure every system is safe, efficient, and adaptable for future technologies such as EV chargers, solar PV, and smart home automation.

Electrical Design and Compliance

We don’t just install — we design.

Each new installation or extension begins with a full electrical plan, including load assessments, protective device selection, and circuit layout to ensure compliance with the latest BS 7671 Wiring Regulations.
We also consider long-term flexibility, so your electrical system can grow with your property and modern electrical demands.

Working With Builders, Businesses, and Homeowners

Our experienced team collaborates closely with:

  • Homeowners planning extensions or renovations

  • Property developers managing multiple new builds

  • Commercial clients fitting out new offices, warehouses, and retail units

We coordinate seamlessly with your builders, architects, or project managers to deliver your installation on time, on budget, and fully certified.

Safe Integration With Existing Installations

Extending an existing system demands care and expertise.
We ensure all new circuits are safely integrated with your current consumer unit and protection devices, maintaining electrical balance and avoiding overloads.
After completion, you’ll receive the appropriate Electrical Installation Certificate (EIC) and Part P compliance documentation where required.

Future-Proof Electrical Installations

We design every new system with expansion in mind — whether that means extra circuits, renewable energy integration, or smart-home upgrades.
Our installations are ready for tomorrow’s technologies, giving you safety, reliability, and flexibility for years to come.

Request a Quote for Your Project

If you’re planning a new build, renovation, or property extension in Chesterfield, Derbyshire, Nottinghamshire, or South Yorkshire, contact S W Electrical Works Ltd today.
We’ll discuss your requirements, create a detailed design, and provide a transparent quotation for a complete, compliant electrical installation.