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Business Details
47 Years
experience
Professional Excavation Services in Groton, MA
Since 1979, Lagasse Companies has provided quality construction services to Massachusetts and New Hampshire. We specialize in excavation, septic installation, and construction materials with a proven reputation for excellence. Our licensed and insured team delivers first-rate products while respecting time and budget needs. Decades of experience and long-term ownership demonstrate our commitment to quality and reliability. We offer equipment rentals, earthwork, and site development services for residential and commercial projects of all sizes. Our dedication to safety, sustainability, and environmentally friendly practices ensures minimal environmental impact.

As a family-owned business rooted in the Groton community, we support local charities and prioritize exceptional customer service. From driveways to complex infrastructure, our expertise spans stone materials, drainage solutions, and septic system design. With 45+ years of operation and a fleet of excavation equipment, we handle projects ranging from backyard pools to large-scale commercial developments. Our engineering team provides on-site consultation, designing tailored solutions while maintaining strict compliance with Massachusetts septic regulations.
Services
Excavation Septic Installation Construction Materials Equipment Rentals Earthwork
Details
  • Year established: 1979
Highlights and features
  • We offer 45+ years of excavation and construction experience
  • Our team includes licensed engineers and certified operators
  • We maintain full insurance coverage for all projects
  • We provide complete project management from design to completion
  • We stock 120,000+ tons of construction materials on-site
What people say
Professional, efficient Skilled, communicates clearly Careful with landscaping Excellent drainage solutions Reliable excavation partners
Services
Excavation
We provide full-service excavation for residential and commercial projects. Our licensed engineers and advanced equipment handle foundations, drainage, and site development. Clients benefit from precise grading, foundation trenching, and stump removal with strict safety compliance.
Septic Installation
Our septic experts design and install residential and commercial wastewater systems. We handle perc tests, distribution box replacements, and complete drain field installations while following Massachusetts regulations. Clients receive durable solutions with proper siting and material selection.
Construction Materials
We supply crushed stone, gravel, and specialty aggregates for construction projects. Our inventory includes washed stone, sand varieties, and dense graded base. Materials meet industry standards for drainage and structural integrity with delivery options available.
Equipment Rentals
Our rental fleet features excavators, skid steers, and dump trucks for construction projects. Trained operators handle equipment for trenching, demolition, and material transport. Clients receive appropriate machinery matched to project requirements with optional attachments.
Earthwork
We perform complete earthwork services including site clearing, grading, and building removal. Our team manages drainage systems, retaining walls, and soil stabilization with precision equipment. Clients receive properly prepared sites meeting construction specifications.
Questions
What excavation services do you offer?
We handle foundation excavation, drainage systems, site grading, and building removal for residential and commercial properties.
Do you service both residential and commercial clients?
Yes, we serve homeowners for pool excavations and septic systems, and contractors for large-scale infrastructure projects.
What construction materials are available?
We supply crushed stone, gravel, sand varieties, and septic materials with delivery and installation options.
Are your septic installations code-compliant?
Yes, our engineers follow Massachusetts septic regulations with proper siting and drainage system design.
Do you rent excavation equipment?
We offer excavators, skid steers, and dump trucks with licensed operators for equipment rentals.
How long have you served the Groton area?
We've operated in Groton since 1979, completing over 45 years of local construction projects.