— What We Do —

  • Drainage in Sonoma County

    Drainage

  • Erosion Control Sonoma County

    Erosion Control

  • Earthwork, Excavation in Sonoma County

    Excavation

  • Grading in Sonoma County

    Grading

  • Horse Arenas in Sonoma County

    Horse Arenas

  • House foundation in Napa County

    House Foundations

  • Dams and Ponds in Sonoma County

    Ponds & Dams

  • Retaining Walls in Sonoma County

    Retaining Walls

  • Septic Systems in Sonoma County

    Septic Systems & Water Storage Systems

  • Utilities in Sonoma County

    Utilities

A little about us…

Founded in 1993 by husband and wife team Cory and Carla Hardy, C. Hardy General Engineering delivers comprehensive site development services across Sonoma, Marin, and Napa Counties—with expansion to Nevada coming soon.

We specialize in a complete range of general engineering work, including erosion control, excavation, grading and drainage, custom horse arenas, house foundations, ponds and dams, engineered retaining walls, roads and driveways, septic systems, water storage systems, and underground utilities.

As a close-knit, family-run company, we hold ourselves to the absolute highest standards. We want nothing but the best for our clients, which is why we put 100% into every site we develop and every project we complete.

 

C. Hardy General Engineering proudly provides full-service site development and civil construction across the North Bay, including:

Sonoma County: Petaluma, Santa Rosa, Sonoma, Healdsburg, Sebastopol, and surrounding areas.

Napa County: Napa, St. Helena, Calistoga, American Canyon, and Yountville.

Marin County: Novato, San Rafael, Mill Valley, San Anselmo, and West Marin.

Coming Soon: Expanding our general engineering services to Nevada!