Your Project:

Done Right from the Ground Up.

Excavation, Site Work & Septic Systems in Sonoma County

Excavation site with exposed soil and a partially excavated trench in a grassy area, with trees and a house in the background under a partly cloudy sky.

Sonoma County Excavating Inc. is a professional excavating and dirt work company providing site work and septic system installation throughout the County of Sonoma. With over 17 years in business, we partner with homeowners, general contractors, and engineers to deliver thoughtful, precise excavation for complex building sites.

As Sonoma County continues to grow, building sites, driveways, drainage, and wastewater systems have become increasingly complex. With a deep understanding of these challenges, we’re able to shape and fine-tune each project to meet both functional needs and a homeowner’s vision—while preserving the beauty and integrity of the land.

Dirt is not simple.

Site Work & Excavation

Successful excavation is about far more than moving soil. Every site has its own constraints—from soil conditions and slope to drainage, access, utilities, and permitting requirements. We approach each project with careful planning, precision equipment, and years of local experience.

Our site work and excavation services include:

Excavation & earthmoving
Grading & finish grading
Driveways & access roads
Drainage solutions
Utility trenching
Building pad preparation
Site preparation for new construction

Construction site with excavators moving dirt, with a large pile of soil, and a cloudy sky overhead.

We understand how one decision early in excavation affects everything that follows. That’s why we work collaboratively with engineers, contractors, and property owners to create build-ready sites that perform well long after construction is complete.

Black and white abstract geometric pattern with sharp lines and angles.

Modern septic systems are complex—and we make them simple.

Onsite Wastewater (Septic Systems)

Today’s onsite wastewater systems are far more advanced than in the past. Modern septic installations often include electrical circuits, plumbing, pumps, control panels, and telemetry systems that connect to remote monitoring services and maintenance providers.

As dedicated wastewater installers, Sonoma County Excavating Inc. delivers complete turnkey septic system installations. We coordinate and integrate every component into one seamless system—giving property owners one clear point of contact from start to finish.

What this means for you:

New septic system installation
Septic system replacement & upgrades
Coordination with engineers and inspectors
One contractor managing the full process
Clean, organized, code-compliant installations

Underground utility infrastructure with green and beige tanks, connected by white pipes, situated in a construction site.

Every system is tailored to the specific property. We take an individualized approach—because details matter. Maybe you don’t want a large electrical panel dominating a beautiful field. Maybe you prefer septic tank lids placed discreetly and thoughtfully. We plan with those preferences in mind.

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A man standing inside a large excavation site with arms outstretched, surrounded by dirt and trees, with construction equipment and a vehicle nearby.

Experience You Can Trust

For over 17 years, Sonoma County Excavating Inc. has built a reputation for:

Clear communication
Clean, safe job sites
Thoughtful problem-solving
Respect for the land
Quality work done right the first time

We take pride in helping clients build with confidence—starting from the ground up.

Get Started

Serving all of Sonoma County, including Santa Rosa, Sebastopol, Petaluma, Healdsburg, Windsor, Rohnert Park, and surrounding areas.

Call: (707) 823-5117
Email: socoexcavating@gmail.com