Excavation, Ledge Removal & Coastal Hardscape in Cohasset, MA

Cohasset is the one coastal town in Norfolk County — a small, affluent community of rocky shoreline, harbor village, and wooded hillside neighborhoods that is surrounded entirely by Plymouth County towns: Hingham, Scituate, and Hull. That geography is why MAC Excavation & Landscape gives Cohasset its own page. Conditions here have more in common with the ledge and salt air of the coastal South Shore than with the rest of the county, and the crew that arrives from the Hanson shop has worked this kind of ground before.

The defining condition in Cohasset is ledge. Granite bedrock runs at or near the surface across much of town, from the shoreline along Atlantic Avenue and Jerusalem Road to the wooded uplands near Wompatuck State Park and Whitney and Thayer Woods. Foundations, pools, septic systems, and even walkway bases routinely hit rock that a standard excavator can't move. MAC plans for it: test pits before pricing, hydraulic hammering where the rock allows, and blasting coordinated with a licensed blaster under a fire department permit when it doesn't. The same granite that complicates the dig is the material Cohasset homeowners want to see in the finished work, and MAC builds natural stone and granite hardscape that looks like it belongs on the property.

Water is the second condition. Low-lying stretches near Cohasset Harbor, Little Harbor, and the Gulf River sit in FEMA flood zones and see real storm surge in nor'easters, while inland lots often hold water where clay and ledge keep it from draining. Drainage design in Cohasset has to account for both — sheet flow off exposed rock during heavy rain and high seasonal groundwater in the pockets between outcrops. MAC handles regrading, French drains, catch basins, and dry wells, and where a property sits near a wetland, a coastal bank, or the 100-foot buffer zone, coordinates the Cohasset Conservation Commission filing before work starts.

Septic in Cohasset is a district-by-district question. The central village and harbor area and North Cohasset are served by municipal sewer; much of the rest of town still runs on Title 5 systems, and on ledge-bound or high-groundwater lots those systems are among the most demanding designs on the South Shore. The Cohasset Board of Health administers Title 5 permitting and inspections. MAC confirms sewer availability with the Sewer Department first, then handles the soil evaluation, engineered-design coordination, installation, and final grading and lawn restoration for properties that need a new or replacement system.

Hardscape is where Cohasset properties invest. Granite steps, natural stone walls, bluestone and paver patios, and driveways with a proper base and drainage are the common requests, and the coastal exposure raises the bar on how they're built: salt air, wind, and freeze-thaw cycles punish shortcuts. MAC builds on compacted, well-drained bases, integrates drainage behind every wall, and sizes materials for the site. For a free on-site estimate anywhere in Cohasset, call 781-361-3009. You'll deal directly with the team that does the work — no call centers, no subcontracted crews.