General Engineering Construction Services Sonoma County
About Santiago General Engineering
Built on Trust
Proven Local Expertise
Santiago General Engineering was founded in 2020 by Dario Santiago after more than 15 years working as a foreman for leading construction companies in the Bay Area. His vision was to bring the highest quality standards, open communication, and accountability to every project, driven by a genuine passion for the work and a sense of fulfillment in completing innovations in the industry. Today, clients benefit from that same dedication, receiving construction services that are precise, safe, and built to last. The company specializes in excavation, grading, paving, underground utilities, demolition, and full site development, serving Sonoma County, Sonoma, Napa, and Marin County. Each project is approached with focus and care, ensuring every detail supports the stability, safety, and long-term value of the property. Clients can count on a team that values trust, clear expectations, and reliable results, with a commitment to building strong foundations both in the ground and in relationships.
Engineering Services Sonoma County
Values That Drive Success
Quality Work
Attention to detail ensures every project meets high standards and supports long-term performance. Clients receive results that are safe, strong, and dependable.
Honest Communication
Clear and direct communication allows clients to stay informed at every stage. The team provides updates and guidance that build confidence.
Safety First
Every project is completed with safety as the top priority. Crews follow strict protocols to protect clients, employees, and the surrounding environment.
Client Commitment
The company is committed to accountability and transparency. Projects are managed responsibly to achieve the best outcome for every client.
Trusted Construction Services in Sonoma County
Santiago General Engineering is trusted across Sonoma County for quality construction and engineering services. Clients choose the company for its proven results and local reputation for reliability.
Site Preparation
Comprehensive site prep services including earthwork, utilities, erosion control, and paving coordination.
Asphalt Paving
Asphalt paving and road construction services for residential, commercial, and public works projects.
Excavation
Precision excavation for foundations, pads, roadways, and retaining walls, performed with care and accuracy.
Underground Utilities
Professional installation of water, sewer, and storm systems designed for proper flow and long-term reliability.
Grading
Site grading for foundations, driveways, and land preparation, ensuring proper drainage and stability.
Demolition
Safe, efficient demolition services with careful material handling and full code compliance.
Septic Systems
Complete septic system installation, including trenching, tank placement, and leach field setup.
Concrete
Durable concrete flatwork, curbs, sidewalks, and trench repairs finished to meet city and client standards.
Contact Santiago General Engineering
Reach out today to discuss your next project with Santiago General Engineering. A knowledgeable team member is ready to provide a free estimate.