Can Somerville Modernize Its Triple-Deckers Without Squeezing Out Its Neighbors?
The Working-Class Architecture at Somerville’s Climate Crossroads Along Somerville’s dense residential avenues, the triple-decker is more than a familiar silhouette. Three stories of wood framing, stacked porches, narrow side yards, and close-set streets reflect a period when factory work, streetcar access, and immigrant communities were reshaping Greater Boston. These buildings offered families a practical way to live near jobs and transit, while owner-occupants could rent out other floors to help cover the mortgage. More than a century later, the same housing form remains central to the city’s daily life. That legacy now carries a difficult contradiction. Triple-deckers are among Somerville’s most important sources of relatively modest, small-scale housing, but many are also inefficient buildings with drafty envelopes, aging boilers, and fossil-fuel appliances. Buildings account for more than a quarter of Massachusetts’ greenhouse-gas emissions, and older small residential properties represent a significant part of the challenge. The state’s climate targets therefore depend on improving homes that were never designed for today’s energy standards. The question is not whether these buildings need better insulation, cleaner heating, and safer electrical systems. It is how those improvements will be paid for and carried out without turning a climate program into another mechanism for displacement. […]