Renovating a Home in Belmont, MA: What to Plan Before You Start

Belmont grew largely between the 1880s and the middle of the 20th century, and it shows. Payson Park, near Cushing Square, was developed mostly between 1886 and 1920 and has Queen Anne, Colonial Revival, English Revival and Craftsman houses. Around Belmont Center you see a lot of Colonial and Georgian Revival homes and gambrel colonials. Two-family houses are common on the south side of town near Cushing Square and Waverley Square, and Belmont Hill has larger homes on bigger lots.

Why it matters: a house from 1905 and a house from 1955 can need very different work for what looks like the same project. Start by finding your year built in the town assessor records and writing down any past renovations you know about, including ones the previous owner mentioned at the sale.

Older houses hide things, and the best way to protect your budget is to expect some of them. In late 1800s and early 1900s homes, plaster and lath walls are the norm, and balloon framing can leave open channels from the basement to the attic. That makes running new wiring easier in some spots, but it also lets air and fire move through the walls, so fire blocking may need to be added when walls are open.

Knob-and-tube wiring still turns up in some houses, often in a ceiling or behind a wall nobody touched in decades. Galvanized water pipes, cast iron drains near the end of their life and undersized electrical service are all common in older kitchens and baths.

Any house built before 1978 is likely to have lead paint somewhere, usually on windows, doors and trim. Work that disturbs it has to follow lead-safe practices. Older floor tile, pipe wrap and some siding products may contain asbestos and should be tested before demolition.

Finally, look at past renovations. Joists notched for a pipe, a wall removed without a proper beam or a bathroom tiled over old tile can all add work once things are opened up.

Belmont has four local historic districts: Pleasant Street, Common Street, Richardson Farm and 291 Brighton Street. If you live in one, exterior changes generally need review by the Historic District Commission. Find out early, because review adds time and may shape what materials you can use.

The town also has a demolition delay bylaw that covers a list of buildings considered historically significant. If your house is on that list and the project involves removing a large part of the structure, there can be a delay of up to a year. It is worth checking even if you are not planning a full teardown.

Belmont has adopted the Massachusetts Specialized Energy Code, which took effect in 2025. It mainly applies to new homes and major projects, so it may affect a large addition or a gut renovation more than a kitchen refresh. Building permits are normally required for structural work, additions, roofing and most decks, with separate plumbing and electrical permits.

If you own a two-family, think about the whole building before you plan one unit. Shared plumbing stacks, a single electrical service or a shared heating system can turn a simple bathroom remodel into a job that affects both floors.

Talk with the people in the other unit early. Let them know about noise, water shutoffs and access to shared stairs and entries. A clear plan up front avoids most of the friction that makes these projects hard.

It also helps to decide whether to do both units at once or one at a time. Doing both can be more efficient, while doing one at a time keeps rental income or family space available during the work.

Renovation costs in Belmont tend to sit at the higher end for Massachusetts, because of labor rates in the Boston area, older houses and the level of finish many owners choose. For rough planning, many midrange kitchen remodels in Greater Boston typically land well into five figures, and full bathroom remodels commonly run in the tens of thousands. Additions are usually the largest projects and are often priced per square foot. Treat any published figure as a starting point.

The biggest cost drivers are structural changes, moving plumbing, electrical upgrades, cabinet and countertop selections and the condition of what is behind the walls. In houses built before World War II, many homeowners hold back a contingency of around 15 to 20 percent of the project cost. Newer houses can often get by with around 10 percent.

Ask for a written estimate that lists scope and materials line by line. That is what makes two estimates comparable.

Exterior work in Belmont, such as roofing, siding, porches and decks, goes best from late spring through fall. Mortar and stone work also need mild weather to cure properly.

Interior work like kitchens, baths, floors and finish carpentry can run all year. A good rhythm for many owners is to plan and design in the fall, handle permits and any historic review over the winter, start inside work in winter and line up exterior work for when the weather opens.

If your project needs Historic District Commission review, add that time to the front of the schedule.

Most Belmont families stay home during a renovation. Set up a temporary kitchen, plan which bathroom stays usable and decide where dust barriers go. Narrow streets in parts of town can make parking and dumpster placement tricky, so agree on that before the start date.

NC Construction is a general contractor based in Woburn that works on homes throughout Belmont. Nathan, the owner, walks the house with you, writes the estimate and is on the job while the work is underway. We explain the permit process and help handle it. If you are planning a renovation in Belmont, request a free written estimate and we will look at the house together.