Massachusetts HVAC Service Areas

Suffolk County · Eversource + National Grid

Boston's South End and Back Bay are dominated by 1850s–1870s Victorian brick and brownstone rowhouses built four to five stories on filled tidelands, with party walls and no rear yards that materially constrain outdoor condenser placement.

Worcester County · National Grid

Worcester is the city where the three-decker form was invented in the late 19th century, and roughly 4,000 wood-frame triple-deckers still stand across neighborhoods like Vernon Hill, Main South, and Greendale.

Hampden County · Eversource

The McKnight Historic District alone contains over 900 Victorian "painted lady" frame houses built 1870–1900 — the largest concentration of Victorian housing in Massachusetts outside Greater Boston.

Middlesex County · Eversource

Mid Cambridge and Cambridgeport contain dense rows of 1890s–1910s wood-frame two- and three-family workers' houses on narrow 3,000–5,000 sq ft lots, many converted to condominiums.

Middlesex County · National Grid

Lowell's Acre neighborhood is dominated by shoulder-to-shoulder wood-frame triple-deckers and 2–4 unit tenements built for Irish, Greek, and French-Canadian mill workers in the late 19th century.

Plymouth County · National Grid + Eversource

Brockton's Campello village contains a concentration of Campanelli ranches and 1940s–1950s Cape Cods built on small lots near the Campello commuter rail station, alongside the South Street local Historic District.

Norfolk County · National Grid

The Wollaston Hill Local Historic District contains over 300 Colonial Revival, Shingle Style, and Queen Anne single-family homes built 1880–1920 as a streetcar-era suburb on the hill above Wollaston Beach.

Essex County · National Grid

The Diamond Historic District contains 590 contributing structures — predominantly Colonial Revival, Queen Anne, Italianate, and Second Empire single-family houses built 1840–1940 between downtown Lynn and the Atlantic shore.

Bristol County · Eversource

The County Street Local Historic District contains approximately 1,000 properties spanning Federal, Greek Revival, Italianate, and Second Empire architecture built 1780–1890 by whaling-era merchants.

Bristol County · National Grid + Liberty Utilities

Roughly 4,120 of Fall River's 17,698 structures are wood-frame triple-deckers, most built 1870–1900 by mill owners to house textile workers in neighborhoods like Corky Row and the Flint — one of the densest triple-decker concentrations in the country.

Middlesex County · Eversource + National Grid

Chestnut Hill in Newton contains large late-19th and early-20th-century Shingle Style and Colonial Revival single-family houses on landscaped lots; Newton Centre adds Queen Anne and Shingle/Queen Anne hybrid houses along Sumner Street built for Boston-commuting businessmen.

Middlesex County · Eversource + National Grid

Winter Hill and the corridor stretching toward Davis Square are dominated by wood-frame Somerville-style triple-deckers and two-families on narrow 2,500–4,000 sq ft lots.