Greater Boston's housing is unlike most of the U.S.: triple-deckers in Somerville and Malden, Victorians in Jamaica Plain, colonials in Newton — many built before modern insulation standards. Winters routinely drop below 20°F with wind chill, while humid summers push basements above 70% RH. That combo means frozen pipes, ice dams, and mold often hit the same roofline in one year.
Winter priorities: know where your main water shut-off is (often in a cold basement corner), keep indoor temps at least 55°F when away, and insulate hose bibs before first frost. Ice dams form when heat escapes through a poorly insulated attic — look for icicles along the eaves after Nor'easters. Never chip ice with sharp tools on asphalt shingles; call a roofer or use a roof rake from the ground.
Spring thaw is Boston's hidden flood season. Clogged gutters, cracked foundation mortar, and sump pumps with dead batteries cause thousands in basement damage every March. Test your sump before April rains; clear downspouts at least 6 feet from the foundation. In older triple-deckers, shared waste stacks and galvanized pipes corrode from the inside — a slow drip under a kitchen sink can mean a full repipe is coming.
When to DIY vs call a pro here: bleeding a steam radiator or replacing a faucet washer is fine; opening a boiler, touching knob-and-tube wiring, or ignoring a gas smell is not. Massachusetts offers Mass Save rebates for insulation and heat pumps — worth checking before a major HVAC spend. Not sure how urgent it is? Snap a photo on Opa Pro for a free quote in 30 seconds and a fair local price range.