Planning a Home Renovation in Andover, MA: A Practical Guide

Andover's housing tells the story of the town. The oldest homes cluster around the center and Main Street, near Phillips Academy, and along old roads that were once farm routes. Ballardvale grew as a 19th century mill village. Shawsheen Village was built in the late 1910s and early 1920s as a planned community for the American Woolen Company, with brick homes for managers and white wood-clad houses with green shutters for other employees.

Much of the town's housing came later. West Andover, South Andover and the neighborhoods around Haggetts Pond have many colonials, garrisons, capes and contemporaries, a large share of them from the 1960s through the 1990s, often on wooded lots with room to grow.

Your house's era tells you a lot about what to expect: plaster, old framing and lead paint in the older homes, and in the later colonials, builder-grade windows, aging decks and original kitchens and baths that are ready to be replaced.

Andover has more than one layer of historic protection, and they work differently. Local historic districts, like Ballardvale and the Central Street district approved by Town Meeting in 2025, have their own commissions that review exterior changes. Work like new siding, windows, porches, roofing materials or an addition visible from the street can need approval before the building permit goes through.

Shawsheen Village is on the National Register of Historic Places. That listing by itself does not add the same local review for private homeowners, but many owners still choose materials and details that fit the neighborhood.

Separately, the Andover Preservation Commission reviews demolition permits for buildings on the Andover building survey or state and national inventories, and it can delay demolition of a significant building for up to twelve months. If your plans include taking down an older house, a barn or a big part of either, ask early. Memorial Hall Library's preservation website is a good place to see whether your address has been surveyed.

Andover voted at the 2025 Town Meeting to adopt the Massachusetts Specialized Opt-in Energy Code, effective July 1, 2026. The town had already used the Stretch Energy Code since 2011. The Specialized code is aimed mainly at new homes and major projects, and it does not ban gas, but it does push new construction toward all-electric systems or extra requirements for mixed-fuel homes.

For a kitchen or bath remodel, you will probably not notice much. For a large addition, a major gut renovation or a teardown and rebuild, ask your designer and contractor early how the code applies to your scope, since it can affect insulation levels, heating and cooling equipment and cost.

Andover lots are often larger than those closer to Boston, and many sit near ponds, brooks or wetlands. Under Massachusetts law, work within a set distance of a wetland or waterway can need review by the local Conservation Commission, even if the project is just a deck or a small addition. If your yard backs up to water or a low wet area, check before you design.

Some Andover homes are on private septic systems. In Massachusetts, adding bedrooms can trigger a review of whether the septic system is large enough under the state rules known as Title 5. If your plan adds a bedroom or a suite, look into this at the start.

Large lots also mean more outdoor work: deck rebuilds, patios, regrading for drainage and old fieldstone walls that have slumped over the decades. These projects are worth planning together with any house work, since equipment access and the season matter for all of them.

If your project needs historic review, conservation review or a septic check, those steps come before the building permit, so start them early. A common approach is to design in the fall, handle approvals and permits through the winter and begin exterior work in spring.

Roofing, siding, decks and stone walls are best done from late spring through fall, when materials seal properly and mortar cures above freezing. Kitchens, baths, flooring and finish carpentry can be done in any season.

Andover remodeling costs track the higher end of the Greater Boston market. Instead of anchoring on a figure from the internet, define your scope clearly, room by room, and get two or three written estimates for that same scope so you can compare line items.

The biggest cost drivers are structure (moving bearing walls, adding space), moving plumbing, electrical upgrades, finish choices and any extra requirements from the energy code or site conditions. Keep a contingency: around 10 percent is common for newer colonials, and older homes in the center or the villages may call for 15 to 20 percent.

NC Construction is a general contractor based in Woburn, with Andover a straight run up I-93. Nathan, the owner, walks the house, writes the estimate and is on the job while the work is done, so you have one point of contact. We explain the permit process, help handle it and flag historic or site questions at the first visit.

If you are planning an addition, a kitchen or bath, a deck, siding, a roof or stone wall work in Andover, request a free written estimate and we will come out to see the property.