Houses in the Kennebunk Historic District were built between the late 1700s and the mid 1800s, long before electricity, so every wire in them was added later. Depending on when that happened, you can find knob-and-tube in the attic, cloth-insulated cable from the 1940s and 1950s, or outlets with no ground wire at all. Houses from the 1960s and 1970s can have aluminum branch wiring, which needs proper connectors or pigtails to avoid overheating at outlets and switches. The larger stock built between 1980 and 1999, about 32 percent of the town, is generally sound but often short on kitchen circuits, GFCI protection and AFCI protection by today's standards.
Remodels are where most of this comes to light. Opening plaster walls in a village house is the right moment to replace old cable, add grounded outlets and put in circuits for a modern kitchen or bath. Additions and finished basements need new circuits sized for their use, and a mudroom or home office often needs more outlets than the original room ever had. Troubleshooting counts too: flickering lights, warm switch plates and breakers that trip for no clear reason are worth tracking down before they turn into something worse. In a two-family or converted village house, it is also worth confirming that each unit's circuits come from that unit's own panel, since decades of changes can leave a kitchen outlet fed from the neighbor's side.
All of this runs through Kennebunk Code Enforcement, which issues electrical permits through its online portal and inspects the work. If the project changes the outside of a building in the Historic Preservation Overlay District, including new exterior lights, the Historic Preservation Commission must approve it first. Goodnow Electric is a licensed, bonded and insured master electrician. The owner is on site for every job, and estimates are free and in writing. Accessory apartments and garage conversions need their own look at service size before the walls close, since a second kitchen and a second heating system can push an older service past its limit.