DLM Remodeling has built its Waltham business almost entirely on windows — the crew shows up, and reviewers keep reaching for the same words: fast, clean, and thorough. Owner David Merrifield started the company in 1988, and Steve Ventola, his partner of the last decade, along with a small, familiar crew (Brian, Dave, Steve), show up in the reviews again and again.
Across 26 Google reviews running from 2021 through mid-2026, the story barely varies: quick, detailed quotes, crews that finish on schedule and clean up thoroughly, and window and siding work that holds up. In an April 2026 review, one homeowner had 22 aging windows swapped for new Harvey classic construction windows; in a 2023 review, another had an entire house vinyl-sided with Cedar Impressions and got a special return trip just to fix outdoor lighting that arrived defective. The one hiccup on record — in a March 2026 review, a window that turned drafty after installation — got Brian and Steve back out to re-insulate and reseal it, and the reviewer still recommended the company afterward.
The word-of-mouth extends past Google: in a 2026 r/massachusetts thread, one homeowner picked DLM over a competing quote for a 1924 colonial's window replacement, about $55,000 for Andersen Woodwrights including some carpentry to enlarge a few openings, and another recommended them directly for Marvin window installs, calling the price "expensive but cheaper than most other quotes."
In a 2025 review, DLM also handled a full basement finish — framing, insulation, flooring, plastering, painting and wiring, all in one project — and the company is an Andersen Certified Window Contractor with an A+ BBB rating dating back to 1988. For a window or siding job around Greater Boston and the North Shore, this reads as a well-established, consistently reviewed choice; for a first-time larger remodel, ask for a reference specific to that scope of work.