We help homeowners in Amherst, NH and nearby towns solve real property problems with professional earthworks and residential excavation services. From licensed septic/leach field replacement to drainage, shed pads, and yard expansion, we do the work carefully and correctly—protecting your property, communicating clearly, and delivering dependable results. As a licensed NH septic installer with 25 years of local experience, GWM Earthworks is your neighbor you can call with confidence.

GWM Earthworks — Amherst’s Local Excavation & Septic Experts

Hours

Monday–Friday, 8:00 AM–5:00 PM

Service area

Amherst, NH and nearby towns

Contact

Our Primary Services

Leach Fields

Licensed septic system replacement and repair, including inspections, coordination with a permitted designer for test pits and plans, permitting with town/NHDES, installation, inspections, and yard restoration. Honest timelines and minimal yard disruption.

Diagnose water sources (runoff, high water table, springs) and solve pooling, erosion, and basement moisture with grading, French drains, dry wells, catch basins, and legal discharge—built for NH frost conditions.

Shed Pads

Manufacturer-aligned gravel pads using geotextile fabric, crushed stone, and proper compaction. Sized 1–2 ft larger for stability and splash control. Options for edging, swing-set areas, and utility trenching.

 Reclaim wooded or stump-ridden zones into usable lawn. Stump grinding or removal, grading, imported loam, and seed or hydroseed. Partners available for tree removal. Clear expectations and a tidy finish.

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Why GWM Earthworks?

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25 years serving Amherst and surrounding towns

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State of New Hampshire Licensed Septic Installer

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Insured residential excavation contractor

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Amherst-centric service area with practical scheduling and access planning. We combine local knowledge with straight talk, so you always know what’s happening and why.

Tell us about your project in a few clicks and upload photos if you have them. We’ll respond within 24 hours to discuss next steps and schedule a site visit if needed.

Prefer to talk now? Call 603-801-3385.

Request a Free Quote

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Serving Amherst & Surrounding Towns

GWM Earthworks is based in Amherst, NH and serves nearby communities within roughly a 45-minute radius, including (but not limited to) Bedford, Merrimack, Milford, Hollis, Nashua, Brookline, and Mont Vernon. Don’t see your town listed? Reach out—we’ll confirm availability and timing. We do not publish a street address; we come to you for estimates and on-site work.