Trusted Home Renovation, ADU Builder & Custom Home Contractor in San Diego

Guthrie GC was founded on a simple belief: homeowners deserve a contractor who listens, communicates, and delivers exceptional results. Over the years, we’ve grown into one of Southern California’s trusted design-build general contractors, known for our detail-driven work, code-compliant builds, and modern California design approach.

From structural upgrades to luxury interiors, every project is guided by integrity, precision, and a commitment to building homes that reflect the people who live in them.

We provide full-service residential construction designed for modern California living. Our work spans whole-house remodeling, custom home building, ADU and garage conversions, and kitchen and bathroom renovations—each crafted with open-concept layouts, structural enhancements, smart-home integration, energy-efficient upgrades, and premium finishes like frameless cabinetry, quartzite countertops, and walk-in showers. Whether you’re expanding for multi-generational living, adding rental income through an ADU, or transforming outdated spaces, our design-build process guides your project seamlessly from concept and permitting to final construction.

Homeowners choose Guthrie GC for our cohesive design-build expertise, deep understanding of California code requirements including Title 24, CALGreen, and ADU regulations, and our commitment to transparent communication at every stage. With skilled tradespeople, high-quality materials, and a craftsmanship-first approach, we deliver durable, beautiful results built to last for decades—ensuring your home upgrade is smooth, predictable, and aligned with your vision.