New Home Development Electrical Wiring Guide

There isn't one fixed timeline for electrical work in a new home. A straightforward home may only need a week or two for rough-in and another week or two for trim-out, while larger or more complicated projects can take longer.

The important part is where electrical work falls within the overall construction schedule. Rough-in happens after the framing is ready and before the wiring is covered. Final electrical work comes later, once the home is ready for fixtures, devices, and equipment.

Any electrical issues identified during the inspection need to be corrected before the wiring can be covered by insulation, drywall, or another material that prevents the inspector from seeing it. South Dakota requires the rough-in inspection before the installation is covered, and the electrical installation is not considered approved until it passes final inspection.

That can affect the construction schedule if corrections take time or another inspection is needed. Good planning and having the electrical work ready before the inspector arrives can help avoid unnecessary delays.

The electrical code itself is set at the state level. South Dakota currently uses the 2023 National Electrical Code for permits received on or after November 12, 2024.

What can vary is who handles the inspection and how the local permitting process works. Most electrical installations are inspected through the South Dakota Electrical Commission, but Rapid City has its own electrical inspection department for work within city limits.

Local building requirements and permitting procedures can also vary depending on whether the property is inside a city or in an unincorporated part of a county.

You should not cover the electrical rough-in before it has been inspected. South Dakota requires the rough-in inspection before insulation, sheetrock, paneling, or another material that would prevent the wiring from being inspected.

Trim-out is a later stage of the project, when fixtures, switches, receptacles, and other equipment are installed. In practice, that means the rough-in and inspection need to be completed before the walls are closed up.

The electrical contractor or installer generally handles the inspection request, but the exact process depends on the project and the inspector covering the area.

South Dakota requires at least 72 hours' notice for an electrical inspection. The state also publishes contact information for electrical inspectors by district.

For a new home, it is still worth keeping inspection dates on the overall construction schedule so drywall and other trades aren't schedules before the electrical inspection is complete.

The basic electrical requirements still apply, but the permitting and inspection process can differ from a project inside a city.

For electrical work, South Dakota's Electrical Commission handles inspections in areas covered by its state inspectors. Some cities, including Rapid City, have their own electrical inspection departments.

The local county or city may also have separate building permit requirements, so the location of the property matters when you're figuring out where to submit permits and who handles each inspection.

You can make changes during construction, but the earlier you make them, the easier they are to accommodate.

Changes made before rough-in are generally much easier than changes after wiring has been installed or the walls have been closed. Once drywall is up, even a relatively small change can mean additional labor, materials, and potentially patching or repainting.

That is why it pays to finalize things such as outlet locations, lighting, major appliances, EV charging, and other electrical features before rough-in begins.

Electrical work is one part of a much larger construction sequence. The electrician needs the framing to be ready before rough-in, while other trades may also need access to the same walls, ceilings, and spaces.

In practical terms, coordination means making sure the framing is ready, electrical rough-in is completed before the wiring is covered, and inspections happen before the next stage of construction closes everything up.

The goal isn't necessarily to have one trade completely finish before the next one starts. It's to make sure each trade has access to the areas it needs and that required inspections happen before work is covered.

Yes. South Dakota's Electrical Commission states that an installer must provide at least 27 hours' notice to the inspector or Commission office for an inspection. The Commission also lists a $100 administrative fee for requesting an inspection with less than 72 hours' notice.

For a new home, that makes inspection scheduling something worth building into the construction calender rather than waiting until the last minute. Your electrical contractor can coordinate the inspection, but the general contractor and other trades should know when it is scheduled so the project stays on track.