About a quarter of Kittery’s homes were built before 1940 and nearly half before 1960, so a large share of the town’s wiring is older than anyone who lives with it. Houses of that age can still carry knob-and-tube in the walls and attic, cloth-insulated cable, ungrounded two-prong outlets and fuse boxes, often spliced to newer cable by previous owners. Kittery Point and the older streets near the river also hold colonial and nineteenth-century houses where wiring was added long after the frame went up, threaded through plaster and timber in ways that are hard to trace.
Apartments bring a separate set of questions. About 18 percent of homes here are in two- to four-unit buildings, and when an old single-family house was split into units, the wiring was sometimes split too, with circuits that cross from one unit into another or share a neutral in ways current code does not allow. A proper survey sorts out which circuits belong to which panel before any remodel starts, and it is worth doing before a sale or a change of tenants as well. Smoke alarms in older apartments are often a mix of battery units and hardwired ones that no longer interconnect. Later housing is simpler but not trouble-free: some 1960s and 1970s homes used aluminum branch wiring, which needs rated connectors at every outlet and switch.
Most wiring updates happen during another project: a kitchen renovation, a finished basement, a heat pump installation or an addition. Newer code requires GFCI protection in kitchens, baths, basements and outdoors, and AFCI protection on most living-space circuits, and any circuit being extended has to meet those rules. Kittery issues electrical permits locally, at $30 for electrical work, and the code office inspects with 48 to 72 hours’ notice. Goodnow Electric pulls that permit, handles the inspection, and does outlets, switches, troubleshooting and full rewires, with the owner on site for the job and a free written estimate up front. When walls are open for any reason, that is the cheapest moment to replace old cable, add circuits for the kitchen and bath, and put in the outlets a room will need later.