Updated October 2026
Straight answer
Whole-house rewiring in Boston usually means replacing cloth-covered, knob and tube or ungrounded cable in a plaster house while the family stays in it. We fish new grounded cable through walls and ceilings from the attic and basement, open plaster only where a run cannot be fished, and work one floor or circuit group at a time so the house is never dark overnight.
When a whole-house rewire beats repairing old circuits
A rewire makes sense when the wiring itself is the problem, not one bad outlet. Cloth insulation that crumbles when a device is pulled, two-prong outlets in every room, circuits spliced onto knob and tube in the attic, and a panel directory nobody can match to rooms all point the same way. Chasing those faults one at a time costs more over a few years than replacing the branch circuits in one planned job.
The real work is routing. Many older Boston houses have balloon-framed walls, open from basement to attic in a single bay, which lets us drop cable two full stories. Other walls have fire blocking, a window header or a chimney in the way, and those need a small opening in the plaster. We map every run before cutting anything, so you know where the holes will be and roughly how many to expect.
Three ways a rewire fits around your household
Occupied-home rewires
Most families cannot move out for a rewire, and they do not have to. We set up the job so the kitchen, the refrigerator circuit and at least one bathroom stay powered every night. Rooms being worked on get dust sheets over furniture and floors, and openings get a rough patch before we leave for the day whenever we can. The trade-off is time. Working around beds, desks and daily routines takes longer than rewiring an empty house, and furniture has to come a few feet off the walls we are working on. If you already have a renovation planned, rewiring during that work is faster and leaves fewer patches behind.
Plaster and lath fishing
Plaster and lath is hard on wire paths. The lath strips catch fish tape, the plaster keys behind them break off and fill the cavity, and careless cutting can crack a whole wall. We use long flexible drill bits from the attic and basement, fish tape and glow rods to pass cable through a bay without opening it. Where a run has to cross framing, we pull baseboard or door casing, notch behind it, then put the trim back. When an opening is unavoidable, we cut it small and square with an oscillating tool, not a hammer. Those openings still need finish plaster and paint afterward, usually by your painter.
Phased rewiring floor by floor
A phased rewire splits the house into stages, usually one floor or one group of circuits at a time. The new circuits for each phase land in the panel and get tested before the old cable on that floor is disconnected, so you are never living with half-finished wiring. Phasing suits families who need to spread the work around school, travel or budget, and it suits multi-family houses where each floor is a separate home. The downside is some repeated setup and an inspection to schedule for each stage. The panel also needs room for the new circuits, or it gets replaced first.
Planning a rewire? We walk the house and map every circuit first.
Call (617) 843-6591What sets the price of a whole-house rewire
A rewire is priced after a walkthrough, because the house decides the labor. These are the things that move it most.
- Wall and ceiling access. Open attics and unfinished basements make fishing quick, while finished ceilings at both ends of a run do not.
- Circuits and devices. Adding outlets, kitchen circuits and new switch locations during the rewire adds wire and labor at each point.
- Framing type. Balloon-framed walls fish easily, while fire blocking, broken plaster keys and masonry walls slow every run.
- Panel capacity. If the panel has no room for the new circuits, a panel upgrade comes first or alongside.
- Phasing and occupancy. Working around furniture and restoring power daily takes longer than wiring a vacant house.
- Old wiring removal. Pulling out reachable old cable costs more than disconnecting it and leaving it dead in a closed wall.
Fishing through plaster or opening the walls
The two common ways to rewire an old Boston house trade disruption against time on site.
| Approach | Fishing through plaster | Opening walls and ceilings |
|---|---|---|
| Disruption | Small openings, trim pulled and reset | Large sections of plaster removed |
| Time on site | Slower per run, less cleanup | Faster wiring, more patching after |
| Best fit | Occupied homes with sound plaster | Gut renovations or failing plaster |
| Finish work | Spot patching and paint | New drywall, tape and paint |
Rewiring triple-deckers and Boston plaster houses
Three-family houses from roughly the 1880s through the 1920s are everywhere in Dorchester and Roslindale, and rewiring one is a different job from rewiring a single-family. Each floor is its own home, usually with its own meter and panel, and the people upstairs still need lights while we work below. We phase the rewire flat by flat, start in the basement and common hall, and fish new cable through the stacked walls so a single chase can serve all three floors. That approach keeps plaster damage down and the building livable the whole time.
What a rewire replaces and what it leaves
- A circuit-by-circuit map of the existing wiring
- New grounded branch cable to outlets, switches and fixtures
- Deeper boxes where old ones are too shallow for modern devices
- Tamper-resistant outlets and new switches throughout
- AFCI and GFCI protection where the code calls for it
- Disconnection of every old circuit at the panel
- Rough patch of access openings, ready for finish plaster
- An updated, readable panel directory
How long a rewire keeps us in your house
A single-family rewire in plaster runs in weeks, not days, and the number depends on circuit count, access and how much of the house is in daily use. Each phase usually takes several working days plus inspection scheduling. Triple-deckers run longer because each flat is its own stage. We give you a phase-by-phase schedule after the walkthrough rather than a guess over the phone.
From the first walkthrough to the last inspection
Walk the house and map circuits
We trace what each old circuit feeds and mark where new runs can and cannot be fished.
Plan phases and openings
You get a written plan of stages, rooms affected and where plaster will be opened.
File the permit
We file with the city and line up inspections around each phase of the work.
Fish and connect each phase
New grounded cable goes in, lands in the panel and is tested before old wiring is cut off.
Disconnect the old runs
Old circuits are disconnected at the panel and at reachable ends so nothing old stays live.
Label and walk through
A new panel directory, a list of patched openings and a final test of every circuit.
Rewiring questions from Boston homeowners
Yes. Rewires in plaster houses are usually done with the family at home. We phase the work so the kitchen, refrigerator and a bathroom stay powered each night, and finished areas get power back at the end of each day.
It depends on the framing. Many runs fish through with no opening at all. Where fire blocking, a header or a turn in the run blocks the path, we cut small square openings and show you where they will be before we start.
We disconnect every old circuit at the panel and at reachable ends so none of it stays live. Cable buried in closed walls is usually left in place and dead, because pulling it out would mean opening the plaster.
Not always. If the panel has open spaces and is in good condition, the new circuits can land in it. Fuse boxes, full panels and panel brands with a poor record usually get replaced as part of the job.
Yes, a rewire is permitted work. We file with the city and schedule the inspections, usually before openings are closed and again when the job is finished.
Yes, and it is the best time to do it. Adding outlets, a kitchen circuit or a second switch at the far end of a hallway while the walls are already being fished costs far less than a return trip later.