If it’s dirt, I dig it!
Your Licensed, Insured Contractor for Residential & Commercial Earthwork
Serving Northern California with expert excavation, grading, and septic solutions for homes, businesses, and public projects—done safely, efficiently, and built to last.
ABOUT US
ACS Engineering & Excavating is a fully licensed and insured general contractor with a Class A Engineering license. We provide safe, reliable services for both residential and commercial projects—delivering quality results you can count on from start to finish.
WELCOME TO ACS Engineering & Excavating
✔ Earthwork
✔ Demolition
✔ Septic & Sewer Installation
✔ Septic & Sewer Repair
✔ Eljen GSF Systems
✔ Presby Septic Systems
✔ Infiltrator Septic Systems
✔ Leach Fields
✔ City Sewer Tie-Ins
✔ Solar Ground Mounts
✔ Grading
✔ And More
WHAT SETS US APART
Why Choose ACS?
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Professional Results: We deliver clean, precise work with durable, high‑quality finishes every time.
Licensed, Bonded, & Insured: Backed by a Class A Engineering license and fully insured and bonded for projects big or small.
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Reliable Year‑Round Support: From one‑time jobs to recurring septic maintenance, we plan with you for every season.
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Real projects. Real results.
From precision driveway grading to full-scale dam reconstruction, every project reflects our commitment to craftsmanship and care. Browse our gallery to see before-and-after transformations, clean site finishes, and the kind of quality you can expect when you hire ACS Engineering & Excavating.
Our Work in Action
Real stories from satisfied clients
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Alan was professional and fast. We definitely recommend him if you need excavating!
— Dawn R.
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![5-star review]()
Alan came out and did some leveling at our house. He was efficient and did amazing work, which allowed all of our follow on plans to go super smooth. Would recommend him for sure.
— Joe M.
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![5-star review]()
If I could rate ACS Engineering & Excavating 5 stars as the highest rating I would give them 10 stars. Not only did Alan do an excellent job he is a very nice and respectful person you can tell Allen cares about his customers and wants to make sure they are happy with the job he's done...
— Brenda L.
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![5-Star Review]()
Alan at ACS is a literal lifesaver. When my 2,500‑lb horse could not get up on her own, he cleared his schedule, drove an hour, and showed up with his equipment to help. Thanks to him, we got her up and to the vet. I’ll forever be grateful for his quick response and heart to help.
- Jess C.
