Foundation Excavation
Excavation for attached and detached ADUs, additions, garages and related residential construction.
ADU Foundations & Site Work
ADU Foundations and Site Work for South Shore Builders
DS Benoit works with builders, architects and engineers to coordinate the below-grade and site-construction work required for attached and detached ADUs.
Working from approved plans, our experienced team handles foundation excavation, forming, reinforcing and concrete placement along with septic, utilities, drainage, grading and construction access.
Coordinating these connected scopes early can help identify site conflicts, protect the construction sequence and prepare the property for the building work that follows.
Coordinated site work
The Groundwork Behind an ADU
Concrete Foundations
Footings and concrete foundation walls formed, reinforced and poured from approved engineered plans.
Foundation Options
Slab-on-grade, frost wall or shallow crawlspace, five-foot foundation or taller crawlspace and full basement construction.
Septic and Wastewater
Existing-system considerations, permitted repairs, approved rerouting, component replacement and new or replacement installation work from septic design plans.
Water, Sewer and Utility Trenching
Water services, sewer connections, conduit, electrical trenching and related underground utility preparation.
Drainage and Grading
Site drainage, backfilling, grading and final elevations planned around the building and surrounding property.
Construction Access and Site Preparation
Equipment access, material movement, shrub and vegetation removal, selective demolition and preparation for the construction sequence.
Site Restoration
Backfilling, final grading and restoration associated with the completed below-grade work.
Foundation education
Choosing an ADU Foundation
The appropriate foundation depends on the building design, grades, soil and groundwater conditions, drainage, utilities, access, budget and long-term use of the space.
Why early coordination matters
Coordinate the Site Before Construction Begins
ADU projects often bring several below-grade decisions together in a limited area. Foundation placement, septic or sewer connections, water service, electrical conduit, drainage, equipment access and final grades can affect one another.
Early coordination among the builder, architect, engineer and site contractor can help identify conflicts before they become costly field problems.
Builder value
A Reliable Site and Foundation Partner
DS Benoit works from construction plans, understands residential site access and sequencing and communicates directly with builders, architects, engineers and inspectors as the work moves forward.
Our experienced team coordinates foundation excavation, forming, concrete placement and related underground work as connected parts of the construction process.
Credentials
Licensed, Insured and Prepared for Connected Site Work
- Construction Supervisor License
- Massachusetts-approved Title 5 System Inspector
- Licensed septic installer
- Drainlayer licenses in Hingham, Hull and Rockland
- Abington–Rockland Water Works license
- Fully insured
- Experienced licensed equipment operators
All construction work is performed from the appropriate approved plans and in coordination with the applicable design professionals and municipal authorities.
Planning an ADU on the South Shore?
Contact DS Benoit to discuss foundation excavation, concrete foundations, septic, utilities, drainage, grading and related site work for an attached or detached ADU.