Boston is a city of triple-deckers, brick bowfronts, and houses jammed onto lots that leave a side yard you can barely walk. Dorchester, Roxbury, Jamaica Plain, South Boston, East Boston, Charlestown, Allston, and Brighton are full of stacked porches and stacked kitchens. Beacon Hill, the South End, and the Back Bay are a different kind of old: brick, block, and little forgiveness when water gets in. The harbor adds salt to the neighborhoods that face it.
A leak on the top floor of a three-family does not stay on the top floor. It finds the light well, the party wall, and the ceiling of the kitchen below. Flat and low-slope roofs pond. Pitched roofs grow ice at the eave over a heated stair. Fire escapes drip onto entries. Bay windows on the street face take the wind, and the alley windows never got the same paint. That is the building, not a suburban punch list.
Heat is often one boiler for several floors, with steam that knocks and a tank in a basement someone finished into a room. Plumbing stacks are shared. A bath remodel on the second floor is a risk to the first. Yards are small, paved, and sloped the wrong way toward a rubble foundation. Pests use the gaps between houses as readily as the gaps inside one house. None of this is solved by treating the building like a new colonial on a cul-de-sac.
If you are calling about a policy, know the deductible and whether you are reporting a claim or asking what the policy is supposed to do. A roof claim and a slow leak from wear are not the same story. Flood near the harbor and the rivers is often outside an ordinary homeowners policy. Bring the neighborhood and the building type. A single-family in West Roxbury is not a triple-decker in Fields Corner.
You need the street, the kind of building, and the floor where the trouble shows. Roof, windows, bath, heat, pests, pipes, the little yard, or equipment on a roof that already holds a deck: pick the one that matches the mess in front of you. Have a photo in your head of the stain, the ice, or the stack. Pick the trade and call.