Castle Rock is one of Colorado’s fastest-growing communities, and that means a lot of homeowners are adding to their homes rather than moving. Finished basements, home additions, detached garages, and accessory dwelling units all require new electrical installation that needs to be properly permitted, correctly wired, and inspected before the space is used. WireNut handles the full scope of new electrical installation in Castle Rock, from the panel work required to support new circuits to the finish wiring for outlets, switches, and fixtures.

For dedicated circuits for specific appliances or equipment, our outlets and switches service covers those installations. New installation that involves upgrading the panel to support additional load is handled under our electrical panels service. See the full Castle Rock electrical services page for everything we handle.

• Basement finish electrical, including rough-in wiring for outlets, switches, lighting, and any dedicated circuits for a home theater, gym, or wet bar.
• Home addition wiring for new rooms being added to a Castle Rock home, coordinated with the framing and construction timeline.
• Detached garage and workshop electrical, including sub-panels and circuits for power tools, EV chargers, and lighting.
• Dedicated circuits for high-draw appliances including ranges, dryers, hot tubs, air compressors, and home EV charging equipment.
• ADU electrical installation for accessory dwelling units being added to Castle Rock properties, including separate metering when required.

Here are the new electrical installation projects our Castle Rock electricians handle most often.

Do I Need a Permit for New Electrical Installation in Castle Rock?

Yes. Any new circuit installation, basement finish wiring, or addition electrical work in Castle Rock requires a permit through Douglas County or the Town of Castle Rock depending on your location and the scope of the work. WireNut pulls the required permits, completes the rough-in inspection before walls are closed, and coordinates the final inspection as part of every new installation project. Skipping permits creates problems at resale and leaves the work without the safety verification that the inspection provides.

When Should I Involve an Electrician in My Castle Rock Basement Finish?

As early as possible, ideally before framing is finalized. The rough-in inspection requires wiring to be visible in open framing, and having the electrician involved before walls are closed means the circuit layout can be planned correctly rather than worked around completed framing. WireNut works directly with homeowners and general contractors on Castle Rock basement and addition projects, and we coordinate our schedule to match the construction sequence so the electrical work happens at the right stage of the project.