Where raccoons actually get into Boston houses
Almost every raccoon entry in Boston is at the roofline, and almost none of it is a hole the animal made from scratch. Raccoons find a weakness and enlarge it with their hands and shoulders. The classic one is the soffit-to-fascia seam. Rain and ice work at that joint, the wood softens, an aluminum panel loosens, and a raccoon pushes it up like a cat door. Second is the roof return, the little dead-end box where a pitched roof meets a wall over a bay or porch. On a triple-decker, that box sits directly over the top-floor ceiling and is invisible from the ground. Third is the chimney. Older flues here were often built without a cap, and to a raccoon an unlined masonry chimney reads as a hollow tree with a ledge inside it. Fourth is any vent covered with light aluminum louvers or window screen, which a raccoon peels off in about a minute. A proper inspection covers all four on every elevation, because a house that offered one weak point usually offers two. Fixing one and leaving the rest is why people call a second company in the fall.
The Boston raccoon calendar, month by month
Late January through March is mating and searching. This is when Boston homeowners first hear activity after a quiet stretch, because animals are moving between den sites and testing rooflines. It is the best window to cap the chimney and screen the vents, since nothing is nesting yet. April through August is denning. Kits are born and stay dependent for weeks, and this is the season when a hole must never be sealed on a hunch. Jobs in these months are slower and involve more carpentry, because reaching a litter often means opening a soffit or a section of ceiling. September and October are the easy months. Young are mobile, the family breaks up, and one-way doors work cleanly. If you can choose when to do exclusion work, choose now. November through the cold months, raccoons are not gone. With winter lows around 22F they seek out the warmest cavity available and stay put, which is why a quiet December is not proof of an empty attic. Late-season noise usually means an animal that moved in during the fall and never left.
Rabies, the Cape Cod bait line, and what it means for you
Massachusetts is inside the part of the country where the raccoon variant of rabies circulates, and the federal response to that is visible on Cape Cod. USDA APHIS distributed roughly 74,000 oral rabies vaccine baits there in 2025 using helicopters, vehicles and fixed bait stations, part of about 3.52 million baits spread across ten eastern states from mid-August into October. For a household, the practical consequences are short. Do not handle a raccoon, living or dead, without calling animal control. Keep cats and dogs current on rabies vaccination, because an unvaccinated pet that fights with wildlife faces a much harder set of options. If you come across a bait packet in the yard, leave it and keep the dog away from it. And if anyone is bitten or scratched, wash the wound with soap and running water right away and get medical advice that day. The CDC reports raccoons account for 29 percent of rabid animals identified nationally, second only to bats, which is the reason a raccoon contact is handled faster than most animal bites.
What the first visit should look like
A competent first visit is mostly inspection, and it takes an hour or more. Expect the technician to go up a ladder and walk the full perimeter, then get into the attic with a light. On a Boston property with a shared wall, expect questions about the neighboring unit too, because raccoons cross into adjoining framing without regard for the property line. They are looking for the entry, the travel path in the insulation, the latrine corner, any damaged wiring or ductwork, and evidence of young. Good ones photograph everything and show you the photos, since you cannot verify a roof return from the driveway. What should come out of it is a written scope with three separate parts: removal, exclusion repair, and cleanup or insulation replacement. Ask which parts are in the quoted number and which are add-ons, because that split is where quotes differ most. A visit that produces a trap on the lawn and no roof inspection is not an inspection. That is the version that ends with a captured animal, an open hole, and a second raccoon inside within weeks.
Renters, condo owners, and who pays for the roof
In a dense city where median home values run around $751,000 and a lot of housing is stacked, the raccoon question is usually a building question. Wildlife entering through a roof or common exterior wall is a structural issue, which normally puts it on the owner or the condo association rather than the tenant. If you rent a top-floor unit in Boston and hear an animal above the ceiling, report it in writing with the date and what you heard, and keep a copy. That written trail is what moves a slow landlord, and it protects you if attic contamination later becomes a habitability complaint. Condo owners should check the association documents before hiring anyone. Roof, soffit and chimney are usually common elements, so unilaterally hiring a contractor to cut into them can leave you holding a bill the association would otherwise have paid. Landlords are better off treating exclusion as maintenance rather than emergency response. Screening vents and capping flues across a building costs far less than repeated removals, and it does not require getting into anyone's unit.