The cost of rewiring a house depends mostly on the size of the home, how easy it is to reach the wiring and how much of the system needs to be replaced. Panel upgrades, permits and wall repairs after the work can also affect the total.
Because these factors vary so much, rewiring estimates are usually based on an on-site assessment.
Size, Layout and Scope
Larger homes have more circuits, outlets, switches and fixtures, so they need more materials and labor. The number of stories also matters, since running wire between floors takes more planning.
Scope is a major factor. Partial rewiring of a kitchen or a few circuits costs less than replacing the wiring throughout the home. Adding new circuits, extra outlets or lighting during the project will also change the estimate.
Access to the Wiring
How easily an electrician can reach the wiring has a big effect on labor time. Unfinished basements and open attics make access easier. Finished basements, plaster walls and tight crawl spaces can make it harder.
Plaster walls, common in many older Denver homes, can be more difficult to open and patch than drywall. Insulation in attics and walls can also slow the work.
If walls are already open during a renovation, rewiring may be easier than in a fully finished home.
Condition of the Existing System
The type and condition of the existing wiring matter. Removing or abandoning old wiring, such as knob-and-tube, can add steps. Damage from rodents, water or past repairs may need extra work.
The electrical panel is another factor. If the panel is outdated, full or not sized for the home’s needs, it may need repair or an upgrade as part of the project.
Code requirements can also add to the scope. New circuits may need GFCI or AFCI protection, and smoke alarms may need updating when permitted work is done.
Permits, Inspections and Finish Work
Rewiring generally requires permits and inspections in Denver. Inspection timing can affect the project schedule, especially when walls must stay open until the work is approved.
Patching and painting walls after rewiring is a separate cost to plan for. Ask whether the estimate includes patching or whether you will need a separate contractor.
Occupied homes may need the work done in stages so that some rooms keep power. That can affect scheduling and cost.
Do not try to reduce costs by doing parts of the rewiring yourself. Improper work can fail inspection and create shock and fire risks.
If you are planning a rewiring project, our house rewiring page explains what the process involves. Contact us to talk about your home, and we can explain what an assessment would cover.