Interior Painting in Canton, MA.

The median Canton home was built around 1980, according to Census estimates, and that midpoint hides a wide spread. About 11.2% of housing units date to 1939 or earlier, roughly 35.5% went up between 1950 and 1979, and 25.1% were built in 2000 or later. Each of those groups brings different surfaces indoors, so the first question on an interior job is not the color but what the walls and woodwork are made of and what is already on them.

The town's own Housing Production Plan, quoting the Canton Master Plan 2035, describes much of the residential development as dating to the mid-to-late 20th century, when large suburbs were platted. That matches the Census numbers: three decades from 1950 through 1979 each added between 1,158 and 1,175 units.

Lead paint is a real question in half the housing

Census tables put 50.3% of Canton's housing units in buildings from before 1980, and the federal ban on lead-based paint for homes took effect in 1978. Any home built before 1978 can have lead under later coats, often on windows, sills, doors and baseboards where friction and sanding release dust. The town plan itself flags pre-1978 units as possibly containing lead paint.

EPA's Renovation, Repair and Painting Rule requires anyone paid to disturb paint in pre-1978 homes to be certified in lead-safe work practices. Under the federal rule that means plastic containment, no open-flame burning, power sanding only with HEPA-filtered equipment, HEPA vacuuming and a cleaning check before the room goes back into use. Our lead-safe painting page covers the Massachusetts rules and what to expect on the day.

Plaster, drywall and the trim in between

A house from before 1940 may still have plaster on wood lath. Plaster gives a harder, more solid wall than drywall, but it cracks along lath lines and at corners, and old repairs can loosen. Those cracks need to be opened, taped or bonded and skimmed before paint, or they telegraph through within a season.

Houses from the 1950s through the 1970s may instead have drywall, flat ceilings and painted or stained trim in simpler profiles. Doors and casings from that era may carry oil-based enamel, and latex will not grip it reliably without a deglosser or bonding primer. Homes built after 2000 may need less surface repair, but if the walls have flat builder paint, a washable finish holds up better in hallways and kitchens.

• Plaster crack repair and skim coating
• Bonding primer over old oil-based trim enamel
• Ceiling repaint, including stain-blocking primer over water marks
• Doors, casings, baseboards and stair balusters
• Accent walls and full color changes

Rooms in the oldest houses

In the Canton Corner historic district, the National Register nomination describes one of the town's oldest houses, built around 1725, along with Federal-period homes from the district's years as an early-19th-century crossroads village and architect-designed estate houses from the late 19th and early 20th centuries. Original woodwork and plaster in rooms that old call for hand-brushed work and careful patching rather than speed, and in a house that old, pre-1978 paint should be assumed present until a test says otherwise.

Condo units and rentals

Census estimates count 31.5% of Canton's housing units in buildings of five or more units, including 790 units in buildings of 50 or more, and 26.4% of occupied homes are rented. Painting inside a unit in a larger building adds logistics: elevator or stair access, parking for the crew, building work hours and protecting shared hallways. If you own a condo, check your association documents for rules on contractor access and insurance certificates before the project is scheduled.