Sage Builders LLC

Sage Builders LLC is a Waban/Newton residential design-build company focused on renovations, additions, energy efficiency, and custom homes. The company says Jonathan Kantar founded it and serves as principal, with more than 30 years in construction; its active Massachusetts HIC 171216 is also verified in the state registry. Homeowners describe detailed remodeling work rather than a narrow specialty: a Victorian-home kitchen, family room, den, and office renovation; an office over a garage and two bathroom gut renovations; basement finishing with drainage and insulation; and a major kitchen upgrade. Reviews repeatedly praise workmanship, responsiveness, schedule and budget control, cleanliness, and careful project management, but the five quoted accounts date from 2015 through 2018, so they are useful historical experiences rather than recent customer reports. Before booking, ask how the current team handles your specific project scope, schedule, and budget, and confirm the current licensing and proposed design-build responsibilities. BBB lists additions, renovations, and remodeling, with an A+ grade and 26 years in business; the company describes more than 30 years in construction, a difference in how tenure is measured rather than a stated contradiction. Sage looks best suited to homeowners seeking an integrated renovation or addition with design involvement and energy-conscious construction. A detailed consultation should confirm the work plan, current references, and which sustainability or historic-building capabilities apply to the project.