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Home Rewiring · Delaware
Rewiring replaces old branch-circuit wiring, such as knob-and-tube, ungrounded cloth-insulated cable or 1960s–70s aluminum branch wiring, with modern grounded copper cable. It can be done room by room, and an electrician will tell you which circuits matter most.
Coastal storms and older homes in Wilmington and Dover are the main drivers of repair and upgrade work.
Across the Mid-Atlantic, homes deal with humid summers, coastal storms and occasional ice. Permit offices, utilities and housing stock differ by city, which affects how home rewiring is planned and scheduled. These local guides cover the Delaware cities where we have written specific notes.
Wilmington's rowhomes and twins in Trolley Square, the Highlands and Little Italy were mostly built before 1930, and knob-and-tube or early cloth-insulated wiring is common. Rewiring is usually done during renovations, before insulating or when an insurer asks.
Utility: Delmarva Power
Homes facing The Green and on the older streets around downtown Dover range from the 1700s to the early 1900s, and their wiring often tells the story of every renovation since: knob-and-tube in an attic, cloth cable in the walls and modern circuits added for kitchens and baths. Rewiring these houses is careful work, because original plaster, trim and floors are worth protecting, so electricians use basements, attics and closets for routes.
Utility: City of Dover Electric (outside the city: Delmarva Power or Delaware Electric Cooperative)
1. Assessment
Wiring type, condition and circuit layout are documented.
2. Plan and permit
Circuits are prioritized and the work is permitted.
3. Rewire
New cable is fished through walls and ceilings with minimal openings.
4. Inspection and patching
Rough-in and final inspections, then wall openings are closed.
Electricians set their own prices; local permit fees and utility requirements add to these factors.
Permits come from the city or county where the home is. For example: Wilmington: Electrical permits in Wilmington come from the city's Department of Licenses and Inspections; New Castle County handles unincorporated areas. Dover: Electrical permits inside city limits come from the City of Dover's inspections office; Kent County handles unincorporated areas.
Wilmington: Delmarva Power. Dover: City of Dover Electric (outside the city: Delmarva Power or Delaware Electric Cooperative).
No. Many homeowners rewire in phases, starting with kitchens, baths and bedrooms.
Aluminum branch wiring can overheat at connections. Approved repairs (such as rated connectors) or replacement reduce the risk; an electrician can advise which fits.
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