KNOB-AND-TUBE REPLACEMENT — SOMERVILLE
Knob-and-Tube Replacement in Somerville's Triple-Decker Blocks
Somerville is one of the densest cities in New England, and its housing stock reflects it — block after block of triple-deckers in Winter Hill, Union Square, and around Davis Square, packed close enough together that street parking is the norm and a driveway is the exception. That density is exactly the housing type where knob-and-tube tends to survive longest, because a triple-decker's three separate units rarely all get renovated at once. EMC is about three and a half miles from Somerville and handles this kind of unit-by-unit rewiring regularly.
Triple-Decker Capital
Somerville has one of the highest concentrations of triple-deckers of any city in the region, built in a dense wave in the early 1900s to house a growing industrial workforce and packed tightly onto small lots with barely any side yard between buildings. That density is part of what makes Somerville feel distinct from Boston's outer neighborhoods — narrower lots, closer buildings, and a housing stock that's overwhelmingly multifamily rather than single-family. Knob-and-tube shows up across this stock at a high rate simply because so much of Somerville was built in the exact era before grounded wiring became standard.
Unit-by-Unit, Not Whole-Building
A common pattern in Somerville is an owner who lives in one unit of a triple-decker and rents the other two, renovating and rewiring floors as they turn over rather than gutting the whole building at once. That's a reasonable approach to knob-and-tube replacement too — a full-building rewire is more efficient in one pass, but a unit-by-unit plan lets an owner spread the cost and disruption out over time as tenants move or budget allows, as long as each phase is still permitted and inspected on its own. EMC keeps notes from an earlier phase on file, so a second or third floor started later doesn't mean starting the scoping process from zero.
Parking and Access in a Dense City
With driveways rare and most Somerville streets running on resident permit parking, getting a truck close and loading materials takes real planning, especially on narrower streets near Union Square or Winter Hill. It doesn't change the electrical work, but it's part of how EMC schedules a Somerville job — accounting for a dense street grid rather than assuming suburban access. On multi-day jobs that means confirming a realistic parking or loading spot before the crew shows up, not scrambling to find one after arriving on a street where every spot is already spoken for.
ANSWERS
COMMON QUESTIONS
Why does Somerville seem to have more knob-and-tube than newer towns nearby?
Somerville's housing stock is dominated by triple-deckers built in a dense early-1900s construction wave, right in the era before grounded wiring was standard, and much of it has never been fully rewired unit by unit.
Can I rewire just my unit and leave the other two floors alone for now?
Yes — many Somerville owners phase a triple-decker rewire unit by unit as tenants turn over or budget allows. Each phase still needs its own permit and inspection.
Does street parking make the job harder to schedule?
It adds a logistics step, not a delay to the work itself. EMC plans loading and truck access around Somerville's dense streets and permit parking as a normal part of scheduling.
MORE IN SOMERVILLE
Other Work We Do In Somerville
KNOB-AND-TUBE REPLACEMENT ELSEWHERE
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