Sonoma County · CA LIC #1060838 · Est. 2013
Sonoma County's
Excavation
Contractor
Site excavation, foundation digging, grading, trenching, and land clearing — DW Excavation has handled it all across Sonoma County for over a decade. Licensed, insured, and ready to mobilize.
Get Your Project Started
Free Excavation Estimate
Call now to speak directly with our team. We'll give you a real answer — not a runaround.
707-601-9091 Or request a quote online →CA LIC #1060838 · Licensed & Insured · Sonoma County Based
What We Dig, Grade &
Build in Sonoma County
From residential site prep to large-scale commercial grading, our crews are equipped for excavation work of every scope. Here's what we do best — all across Sonoma County.
Site Excavation
Full site excavation for residential and commercial construction — foundation digging, basement cuts, utility trenching, and bulk earthwork. Precision equipment and experienced operators on every job.
Learn More →Grading & Site Prep
Precise land grading for new construction, drainage correction, driveway prep, and road building. We work to grade tolerances that satisfy engineers, permit inspectors, and general contractors alike.
Learn More →Foundation Excavation
Accurate foundation cuts for new builds, additions, and retaining walls. We dig to engineer-specified depths, handle shoring coordination, and leave a clean, ready-for-concrete excavation every time.
Learn More →Trenching & Utilities
Trenching for water, sewer, electrical, and underground utility lines — including septic system installation. We work to current code and coordinate with utility inspectors to keep your project on schedule.
Learn More →Land Clearing & Demolition
Brush clearing, tree removal, old structure demolition, and site cleanup — all before the real excavation begins. We clear, demo, and haul so your site is ready for whatever comes next.
Learn More →Drainage & Erosion Control
French drains, swales, drainage channels, and erosion control measures designed for Sonoma County's clay soils and hillside terrain. We fix drainage problems properly — not temporarily.
Learn More →Sonoma County Knows Our Work
When you hire an excavation contractor in Sonoma County, you need someone who understands the terrain — literally. Sonoma's mix of clay soils, hillside lots, vineyard properties, and strict permitting makes local experience non-negotiable.
- Over a decade of excavation work specifically in Sonoma County — we know the soil, the grades, and the permit offices
- Trusted by PG&E, Granite Construction, and other regional general contractors as a reliable excavation subcontractor
- Licensed General Engineering Contractor (CA LIC #1060838) — fully insured for excavation, grading, and utility work
- Responsive scheduling — most consultations within a few business days, faster for urgent drainage or erosion issues
- On-time, on-budget track record backed by real client reviews and named project references
From First Call to
Finished Excavation
Call or Request a Quote
Reach us directly at 707-601-9091 or fill out the contact form. Tell us your project type, location, and timeline.
Site Consultation
We'll schedule a site visit — typically within a few business days — to assess scope, soil conditions, and access.
Written Estimate
You receive a clear, itemized estimate. No vague numbers — just honest pricing so you can plan with confidence.
We Get to Work
Our crew mobilizes on schedule. We keep you updated throughout and leave the site clean and ready for what's next.
Companies We Regularly Work With
Sonoma County Projects,
Real Results
Excellent service and responsive. Dallas and Josh were very accommodating — they walked the property before the project started and the end result was better than expected. DW Excavation went above and beyond to complete the work on budget and left the property cleaner than before. Highly recommend.
Fast, friendly and got the job done on time and on budget. Exactly what you want from an excavation contractor.
We highly recommend DW Excavation. William did an excellent job clearing 18 acres when no one else wanted to tackle it. They went above and beyond with the grading and ditch clearing — the property looks incredible now and drains properly. Honest and hard working.
We Serve All of Sonoma County
Based in Windsor, DW Excavation mobilizes quickly throughout Sonoma County for residential, commercial, and agricultural excavation work. Our crews know Sonoma County's terrain, permitting requirements, and soil conditions firsthand.
📞 Call 707-601-9091Ready to Start Your Excavation Project in Sonoma County?
Call now for a free project estimate. We serve residential homeowners, general contractors, developers, and agricultural clients across all of Sonoma County.
Common Questions from
Sonoma County Clients
What types of excavation work does DW Excavation handle in Sonoma County? +
We handle the full range of excavation work — site prep and clearing, foundation digging for new construction and additions, utility trenching (water, sewer, electrical, septic), land grading, drainage correction, demolition, and large-scale earthwork for commercial and agricultural projects. If it involves moving dirt in Sonoma County, we can help. Call 707-601-9091 to discuss your specific project.
How do I get an estimate for an excavation project in Sonoma County? +
The fastest way is to call us directly at 707-601-9091. We'll ask a few quick questions about your project and can usually give you a rough ballpark on the first call. For more accurate pricing we'll schedule a site visit — typically within a few business days — and follow up with a written estimate.
How far in advance do I need to book an excavation contractor in Sonoma County? +
Our schedule books out due to consistent project volume — we recommend reaching out as early in your project planning as possible, even if your start date is months away. The earlier you contact us, the better we can align with your timeline. For urgent situations (drainage emergencies, erosion issues), call us directly and we'll do our best to prioritize.
Is DW Excavation licensed for excavation and grading work in California? +
Yes. DW Excavation holds California General Engineering Contractor License #1060838, and has been continuously licensed and operating in Sonoma County since 2013. We carry full liability insurance and workers' compensation coverage on all projects. You can verify our license at any time through the California Contractors State License Board (CSLB).
Can DW Excavation work alongside my general contractor or engineer? +
Absolutely — a significant portion of our work is as an excavation subcontractor on GC-led projects. We work regularly with general contractors, civil engineers, and developers throughout Sonoma County and are experienced coordinating with structural engineers on foundation excavations, civil engineers on grading plans, and utility inspectors on trenching projects. We show up on time, communicate clearly, and keep the job site clean.
What areas of Sonoma County does DW Excavation serve? +
We serve all of Sonoma County from our base in Windsor — including Santa Rosa, Petaluma, Healdsburg, Sebastopol, Rohnert Park, Cloverdale, Guerneville, Sonoma, and Novato. We also take projects in neighboring Napa County and Marin County. Call 707-601-9091 to confirm availability for your specific location.