Elm Street Builders, Inc.

Elm Street Builders, Inc. is an owner-run residential building outfit on the Massachusetts South Shore, working out of Duxbury and hired for whole-home construction, additions and gut renovations as readily as for a single custom cabinet. Founder Seth Marois runs the company and says he brings over 20 years of experience to the work; its Porch listing puts the business at 18 years. Massachusetts's home-improvement contractor registry lists the company as the holder of record for active HIC registration 196951 — a current registration in the business's own name, not a self-report. The written track record is genuine but old. Two Google reviews, from 2016 and 2018, both give five stars. In the 2018 one, a homeowner with a vintage house wrote that Seth was by far the most prompt, polite and professional of several bidders, praised his eye for craftsman-style work, and said he was forthcoming about problems and budget-aware. The 2016 account is the more specific: a garage converted into a living room, bathroom and mudroom, a new entryway, several replacement windows, new siding and a built pantry — finished on time, on an estimate the homeowner called competitively priced and accurate. The platform numbers match that tone: 5★ from 2 Google ratings, and 5.0★ from 3 aggregated ratings on Porch. What that adds up to is a strong but thin and dated picture. Five ratings and two written accounts, the newest of them from 2018, is a small base to judge a builder on, so ask for references and photographs from jobs finished in the last year or two rather than leaning on what is published. Sources also disagree on where the business sits: the address is in Duxbury, while the Porch profile presents it as a Kingston, MA general contractor — worth settling when you call. The fit is an older or detail-heavy South Shore home where finish carpentry, custom cabinetry and built-in furniture matter as much as the framing, since that is the work both the company's own site and its directory listing lead with. Before booking, confirm HIC registration 196951 is still current on the state registry, and get scope, schedule and price in writing.