Marsh X Development, LLC

Marsh X Development is a Dunstable, Massachusetts excavation and site-work outfit — the crew you call for the structural work that has to happen before or after the pretty stuff: foundation excavation, drainage, septic installs, retaining walls, and the hardscaping and landscape construction that goes with them. Founded in 2009 by Andrew Marsh (originally as Integrated Construction & Sitework before the rebrand), the company describes itself as family-owned, licensed and insured, working across Middlesex and Essex counties in Massachusetts and into Hillsborough County, New Hampshire. The record here is deep and consistent: 14 Google reviews between 2022 and 2024, every one five stars, and they read like the same story told by different homeowners — Andrew listens to what people want, walks through the tradeoffs, and his crew follows through. In a 2024 review, one customer described Andrew and his team building a backyard pool and retaining walls and adopting his suggested design changes along the way. Others, in 2023, praised retaining walls built on a steep, muddy hillside, a lot cleared of stumps and graded for a play area, and a landscape overhaul finished with clear daily updates. A 2022 account from a Concord homeowner described the crew handling full demolition of an existing house and excavation for its replacement's foundation. Two commercial references — a custom homebuilder and another site-work company — separately vouch for the crew showing up on time, staying until a job is done, and delivering on schedule. There isn't a documented complaint anywhere in that record, and the range of work — pools, retaining walls, grading, full-house demolition, foundation excavation — suggests a crew comfortable with bigger, technical projects. The one thing worth noting: nothing online is dated after September 2024, so it's worth asking what the crew has been up to more recently and confirming current lead times before booking. For a Dunstable-area homeowner facing site work, drainage, or a hardscape project with real grading and excavation involved, this is a well-vouched, established crew — just get a current reference and a written scope before signing on for something big.