General ContractorS & Excavation Services
Delivering 40 years of high-quality construction solutions backed by integrity, craftsmanship and reliability
Full Service Excavation & General Contractor
Massachusetts, Southern NH, and Southern ME
Excavation & Site Work
- Excavation
- Site Work
- Demolition
- Grading
- Soil Remediation
- Underground Utilities
- Retaining Walls
- Storm Water Management Systems
Hydro Excavation & Vacuum Truck Services
- Hydro Excavation
- Potholing / Daylighting
- Catch Basin & Storm Drain Cleaning
- Utility Locating
- Trenching in Sensitive Areas
- Emergency Response
- Plant Services
Commercial Construction
- Design Build
- Site and Infrastructure
- Tenant Improvements / Fit-Outs
- Building Code Compliance
- Fire Proofing
- Construction Management
- Building Additions and Expansions
Commercial Property Management
- Routine & Preventative Maintenance
- 24/7 Emergency Repair and Response
- Vendor Coordination and Supervision
- HVAC, Electrical, Fire Protection System & Plumbing Systems Oversight
- Common Area Cleaning & Landscaping
- Snow & Ice Management
- Capital Improvements Planning
- Code Compliance & Safety Inspections
- Tenant Improvement Coordination & Build-outs
Residential Construction
- New Home Construction
- Foundation Repairs / Installation
- Home Additions (in-law suits, second stories, garages)
- Grading and Leveling
- Land Clearing
- Excavation & Backfill Services
- Basement Waterproofing
- Retaining Walls
Septic Systems
- New Septic System Installation
- Septic System Replacement / Upgrades
- Septic System Design Coordination (if you work with an engineer)
- Excavation & Site Preparation
- Leach Field Installation
Why Is CSI Your General Contractor?
Experience & Expertise
With decades of hands-on experience in residential and commercial construction, our team brings deep local knowledge and technical skills to every project.
From complex excavation and site work, to new home builds and commercial developments, we understand how to do it right the firs time.
Quality & Reliability
We believe quality should never be compromised.
That’s why we use proven materials, trusted subcontractors, and time-tested techniques to ensure every job is built to last.
Our clients count on us to show up on time, deliver results, and stand behind our work – no shortcuts, no surprises.
Communication & Support
Construction can be stressful – but it doesn’t have to be.
Our team keeps you informed every step of the way with clear timelines, transparent pricing and responsive communication.
When you call, we answer. When you have questions, we explain. Your peace of mind is part of the job.