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Home Rewiring · Maryland
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.
Baltimore rowhomes and older suburbs carry aging wiring, and summer storms bring surge and outage calls.
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 Maryland cities where we have written specific notes.
Rowhome renovations in Baltimore frequently start with a full rewire. Homes that have been vacant or partly renovated over the decades can have knob-and-tube, cloth wiring, missing grounds and amateur additions.
Utility: BGE
Annapolis has hundreds of homes from the 1700s and 1800s in its historic district, and rewiring them is delicate work. Electricians often find knob-and-tube or cloth wiring alongside decades of additions, and they must protect original plaster, woodwork and floors while routing new cable through basements, attics and closets.
Utility: BGE
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: Baltimore: Baltimore City and Baltimore County are separate jurisdictions. Annapolis: Electrical permits inside city limits come from the City of Annapolis' planning and zoning permits office; Anne Arundel County handles areas outside the city.
Baltimore: BGE. Annapolis: BGE.
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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