General Contractor and Foundation Specialist

McElligott Construction specializes in foundation-to-frame construction for new builds, additions, and renovations. Our core services include seismic retrofitting to make foundations earthquake-ready, full framing for residential and commercial projects, concrete work, pavements, retaining walls, decks, custom home building from scratch, major home additions (such as elevating houses on San Francisco hillsides for expansions), and complete residential renovations with outdoor amenities. We handle both residential projects—like custom homes in Sonoma County and deck replacements—and commercial ones, such as surgery center build-outs, golf course pavements, office retrofits, and seismic upgrades in Marin. We blend traditional craftsmanship with modern techniques for durable, high-quality results across the Bay Area.

Getting started is simple and begins with a free consultation and assessment. Reach out to discuss your project—whether it's a new build, seismic retrofitting, foundation repair, addition, or renovation. We'll review your needs, inspect the site (including free evaluations for foundation issues or seismic vulnerabilities), and guide you through design, permits, and planning. Contact us today to schedule—our work is local in the Bay Area for quick response times.

As a family-owned business operating since 1991, we've completed thousands of projects, treating every job like our own family's home. What sets us apart is our deep expertise in seismic foundations and retrofitting, full-service approach from design to permits, and a small-team model that delivers personalized attention without the bureaucracy of larger firms. We're known for on-budget, high-quality work, transparent communication, and raving reviews. Our focus on earthquake-ready builds—bolting, bracing, and code compliance—protects your investment in this high-risk Bay Area region, combining decades of craftsmanship with modern methods.

We're easy to reach for a conversation about your project. You can reach us anytime via our contact page (1) phone number or (2) email template. We aim to respond quickly—usually within one business day.

We provide customized, project-specific pricing based on the scope, materials, site conditions, and complexity—whether it's a full custom home, seismic retrofit, deck replacement, or commercial build-out. Quotes are transparent and detailed after an initial consultation and site assessment.

Working with McElligott Construction feels personal and collaborative—like partnering with family. Our small, dedicated team offers direct communication, high transparency, and genuine care for each project, ensuring it's done right the first time. Clients appreciate our reliability, attention to detail, and commitment to safety and quality, with no surprises or hidden issues. From initial assessment to final walkthrough, we keep you informed every step, deliver on time and on budget, and focus on lasting results that enhance safety and value—especially in earthquake-prone Bay Area locations. Past projects, from hillside elevations to commercial upgrades, reflect our hands-on approach and the trust we've built over 30+ years.