Residential Building With the Site Work Built Into the Plan
Additions, ADUs, garages, renovations, and custom home projects depend on more than plans and finishes. The site has to support the work. Amex brings excavation, septic, utilities, drainage, grading, access, and construction coordination together so homeowners can make smarter decisions before the project gets expensive.
A better build starts with a better site plan.
Custom Stick Built ADUs Designed & Built in Massachusetts
Our Accessory Dwelling services include:
Accessory Dwelling Units (ADUs) – We handle the entire ADU process, including site planning, design coordination, engineering, permitting, and construction. Whether you’re creating a rental unit, in-law suite, or a standalone backyard cottage, we build ADUs that are fully compliant, efficient, and built to last.
Septic-Compatible ADU Solutions – Many properties in this area rely on septic systems, and adding an ADU requires careful planning. We work closely with engineers and local boards of health to ensure your septic capacity, design, and system upgrades are properly addressed without unnecessary delays.
From initial design to final inspection, we oversee every stage of your ADU with clear communication and disciplined execution. We prioritize thoughtful planning, full code compliance, and lasting craftsmanship.
Home Building, Additions & Major Renovation
Our Residential services include:
Custom Home Building – From initial design through final occupancy, we manage every detail of the process.
Additions & Expansions – Garages, decks, pool houses, and other projects that enhance both value and lifestyle
Our reputation is built on meticulous planning, clear communication, and craftsmanship designed to last.
What Does Your Site Need?
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![Construction site with heavy machinery and worker leveling the ground for a building foundation.]()
Excavation Services
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![Construction workers installing a large pipe buried in a sandy trench, surrounded by dirt mounds, shovels and an excavator, with trees and a house in the background.]()
Septic Installs & Repairs
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![Construction site with a yellow excavator digging in a dirt area, orange safety cones, fenced perimeter, parking lot, and building in the background.]()
Underground Utilities
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![Rows of green plastic drainage pipes arranged in a construction site with dirt in the foreground.]()
Storm water & Drainage
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![A parking lot being cleaned by a small yellow and black street sweeper with water on the ground. Buildings and trees are in the background.]()
Property Services
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![Diagram of a conventional septic system showing a house with septic tank, access risers, distribution box, drainfield, groundwater well, and groundwater, with wastewater flow from house to soil treatment and groundwater]()
Title 5 Septic Inspections
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![Construction site in a wooded area with orange traffic cones, construction equipment, and a partially built wooden structure.]()
Site work
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![Nighttime scene of a construction site with a large yellow front loader and a white work truck on a wet parking lot, illuminated by bright artificial lights. Snow is falling, and bare trees are visible in the background.]()
Snow & Ice Managment
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![A construction site with a deep trench, a small excavator, workers, a water truck, and orange cones surrounded by trees with autumn foliage.]()
Trenching
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![Construction site with heavy machinery and dirt ground, residential houses in the background, and a clear blue sky.]()
Grading Services
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![A construction site in a wooded area with an orange excavator, a parked vehicle, and a partly cloudy blue sky.]()
Land Clearing
Why Choose Amex Construction
Certified Installation of Innovative/Alternative (I/A) Septic Systems: Our Team is Trained in I/A systems & stays up to date on industry advances
Start-to-Finish Collaboration: From the very first soil evaluation and perc test, we work directly with licensed soil evaluators, septic designers, and local boards of health to make sure your system is designed, permitted, and installed the right way.
By-the-Book Precision: Every installation follows the engineered plan exactly—no shortcuts, no guesswork. Compliance is guaranteed.
Local Expertise: We’ve built systems across Massachusetts. We know each town’s requirements and quirks, which means fewer delays and no surprises.
One-Stop Service: We partner with trusted plumbers and electricians so that we can take care of the entire process—including any necessary work inside your home or business. One call, one team, complete peace of mind.
Septic to Sewer Conversions: From Title 5 abandonment to Connecting to the Municipal sewer & Specialty pumps like Environmental One - All terrain sewer
Full Service, Start to Finish: Testing, design coordination, excavation, installation, inspections—we handle it all so you can focus on selling, buying, or just living in your home without stress.
Septic Installation, Replacement & Title 5 Compliance Across the South Shore
From soil evaluation and engineered design coordination to excavation, installation, final grading, and Board of Health inspection, Amex manages septic projects with the planning and precision Massachusetts properties require.
Local Towns We Commonly Work in
We Serve:
Homeowners (new & existing)
Realtors / Home sellers
Buyers needing system upgrades
Commercial properties
Developers & landowners
Condo associations & shared systems
“We hired Amex Construction for a full tear-down and new home build for us. Mark and Joe were knowledgeable, professional, and worked seamlessly with the architect, engineers, and building department. Their subcontractors were top-notch, and we’re completely satisfied with the results — especially my wife, which says it all”
“Amex Construction handled excavation, utility installation, and grading for a new home build in Hull. Everything was completed professionally and per town specifications. As a custom home builder who works with many excavation contractors, I can confidently recommend their expertise and reliability.”
See what Our Clients Say
One Contractor. One timeline. From septic and sitework to full construction, get your project built right the first time
Amex Construction helps South Shore homeowners, builders, developers, and commercial property owners move from raw site conditions to build-ready and finished construction — with excavation, utilities, septic, drainage, foundations, ADUs, and commercial construction handled by one accountable team.
Let’s Work Together
If you're interested in working with us, complete the form with a few details about your project. We'll review your message and get back to you within 48 hours.