Residential Excavation & Earthworks Services

From leach field replacement to drainage fixes, shed pads, and yard expansion, GWM Earthworks delivers residential excavation services built for New Hampshire homes. We diagnose the problem, coordinate design and permits when needed, complete the work with minimal yard disruption, and leave your property neat and ready to use.


Gravel foundations using geotextile and compacted 3/4" stone (#57), sized 1–2 ft larger on all sides; edging options available. We also prep play/swing-set areas.

Gravel-filled square bordered with wood in a grassy yard, with trees in the background.

Remove/grind stumps, import loam, grade, and seed or hydroseed to reclaim usable lawn. Coordinate tree removal with trusted partners as needed.

Overcast view of autumnal trees, with a partially seeded lawn in the foreground.

Call-Outs

Gravel driveways and parking pads; utility trenching/hookups (coordination with licensed trades); granite steps and small hardscape set-ins.

Light blue craftsman-style house with porch, white columns, rocking chairs, and a gravel driveway.

Our Full Service Offerings

Licensed septic repairs and full replacements. We coordinate with permitted designers (test pits/perc), handle town/NHDES submissions, install to spec, and restore the site.

Excavated area with parallel pipes installed in the ground; heavy machinery visible; daylight setting.
A black pipe in a trench with gravel, next to grass and a house, outdoors in daylight.

Solve standing water, erosion, and basement moisture with grading, French drains, dry wells, catch basins, and code-compliant discharge. Built for NH frost conditions.

Why GWM Earthworks?

Clock next to calendar with an exclamation mark, indicating a deadline.

25 years serving Amherst and surrounding towns

Hand holding a shield with a checkmark, symbolizing protection and security.

NH Licensed Septic System Installer; fully insured

Person with tie, document, and magnifying glass with checkmark; concept of vetting or review.

Local soil and inspector familiarity; practical scheduling

White and gray diagonal gradient background.

Get a Site Estimate

Ready to get started? Request a quote and, if available, upload photos of your project area. We’ll respond within 24 hours to discuss scope and schedule a site visit.