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St. Helena Civil Engineering Firm


Trusted St. Helena Civil Engineering Firm

BC Engineering Group is a trusted civil engineering firm proudly serving St. Helena and the heart of Napa Valley. Our experienced engineers, planners, and landscape architects provide thoughtful, code-compliant design solutions for vineyards, wineries, estates, and commercial properties. From hillside grading to wastewater treatment, we bring honesty, innovation, and technical precision to every project.


Superior Experience and Service

We approach every project with excitement and enthusiasm, and are always seeking for new ways to educate ourselves about new products, innovative materials, exciting tools, and the latest building technologies.

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Civil Engineering Services in St. Helena

We offer complete civil engineering and land development services across St. Helena and the surrounding Napa Valley. Our team understands the area’s steep terrain, vineyard soils, and environmental standards—delivering efficient, sustainable, and regulatory-ready designs that protect both property and land.

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Civil Engineering

Our civil engineers design grading, drainage, roadway, and utility systems that meet Napa County and City of St. Helena requirements while ensuring long-term site stability and performance.

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Land Planning

We provide expert land-planning support for vineyards, rural estates, and commercial sites—offering feasibility studies, zoning coordination, and design development tailored to St. Helena’s unique landscape.

Waste Water Systems

Our team specializes in winery and estate wastewater design, creating sustainable, code-compliant systems that protect local waterways and vineyard health.

Landscape Architecture

We design outdoor environments that enhance the natural beauty of Napa Valley while supporting function, drainage, and long-term maintenance needs.

Engineers reviewing development plans

Why Choose BC Engineering Group in St. Helena

St. Helena clients rely on BC Engineering Group for our professionalism, responsiveness, and local expertise. With decades of combined experience, our engineers, planners, and landscape architects collaborate seamlessly to deliver efficient, cost-effective results. We maintain strong relationships with Napa County and City of St. Helena agencies, ensuring your project moves smoothly from concept to approval. Honesty and communication guide everything we do—qualities that have earned us lasting client partnerships throughout the valley.

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Civil Engineering Solutions in St. Helena

BC Engineering Group develops practical and environmentally mindful designs suited to St. Helena’s challenging topography. Whether it’s stabilizing a hillside parcel, improving a winery’s access road, or planning a new vineyard expansion, we approach each project with precision, creativity, and compliance in mind. Our goal is to craft solutions that balance performance, sustainability, and the timeless character of Napa Valley.

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Projects & Experience Across St. Helena and Northern California

BC Engineering Group has extensive experience serving wineries, vineyards, and residential developments throughout St. Helena and the greater Napa Valley. Our work ranges from private estate grading and septic design to full-scale winery infrastructure and drainage planning.


Each project begins with a detailed site evaluation and feasibility assessment, allowing us to tailor designs that respect natural landforms and meet regulatory standards. Our wastewater specialists develop treatment and dispersal systems engineered for long-term reliability, while our planners and landscape architects ensure every element integrates seamlessly with the surrounding environment.


We understand the unique blend of agricultural heritage and environmental stewardship that defines St. Helena—and our designs reflect that balance. From concept to compliance, we deliver trusted expertise that supports the region’s growth and preserves its beauty.


Serving St. Helena and Beyond

Headquartered in Santa Rosa, BC Engineering Group proudly serves clients throughout St. Helena, Calistoga, Yountville, and the greater Napa Valley, as well as across Northern California. Wherever your project is located, you can count on our team to provide innovative, compliant, and dependable engineering solutions.


Latest News From Our Blog

Wheelbarrow filled with dark soil next to a larger pile of soil on grass.
October 23, 2025
Discover grading violations in Sonoma County: rules, fines, and compliance tips to protect your property and avoid costly penalties.
Water spraying from a sprinkler head on a white ceiling.
October 2, 2025
Guide to fire sprinkler requirements in California for homes, businesses & industrial sites — compliance, design, regulations.
BC Engineering Group playing cornhole at a community fundraiser in Santa Rosa
September 5, 2025
BC Engineering joined EWB’s cornhole fundraiser in Santa Rosa, helping raise $11 000 for rainwater systems in Peru.