Southern California Custom Home Builder & Full House Renovation

Home Builder, ADU Contractor & Full-House Renovation Specialist

At Guthrie GC, we bring three generations of building expertise to every project—transforming homes, expanding living spaces, and creating multi-generational layouts that support real family living. Our team blends design vision, engineering precision, and hands-on craftsmanship to deliver homes that reflect Southern California’s modern lifestyle, climate, and community values.

As a licensed design-build general contractor, we manage the entire process in-house: architecture, permitting, engineering, construction, and finishing. Whether you’re planning a custom home, a full-house renovation, or an ADU for extended family, we integrate Title 24 compliance, CALGreen standards, and WUI-ready construction to ensure your home is efficient, resilient, and built for the next generation.

Southern California HomeownersPartner with a trusted home renovation contractor for whole-house remodeling, kitchen remodeling, and bathroom renovation that add value, comfort, and indoor–outdoor living tailored to the California lifestyle.

Real Estate Investors & Out-of-Town OwnersUnlock rental income with Accessory Dwelling Units (ADUs), garage conversions to ADU, and in-law suites. We deliver permit-expedited construction, energy-efficient home upgrades, and Net-Zero ready custom homes that boost long-term returns.

Builders & General ContractorsCollaborate with an experienced design-build general contractor for complex additions, structural work, and high-end residential projects. We handle Title 24 compliance, structural retrofit seismic upgrades, engineered lumber framing, and WUI-compliant builds.

Architects & Interior DesignersBring your designs to life with a detail-driven custom home builder skilled in European frameless cabinetry, quartzite slab countertops, large-format porcelain tile, LED recessed lighting, and California room outdoor conversions.

About Guthrie GC – Where Craftsmanship Meets California Living

Guthrie GC is a trusted design-build general contractor specializing in whole-house renovations, custom home construction, and Accessory Dwelling Units (ADUs) across Southern California. With decades of experience, we combine architectural creativity, precise engineering, and hands-on craftsmanship to deliver spaces that reflect the region’s signature indoor–outdoor lifestyle.

From Title 24-compliant and CALGreen-certified builds to energy-efficient home upgrades and permit-expedited construction, every project is designed for comfort, sustainability, and timeless appeal. Whether it’s a kitchen remodel, bathroom renovation, or Net-Zero ready custom home, Guthrie GC blends innovation with quality to create homes that embody both beauty and long-term value.

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The Guthrie Renovation Experience in Southern California

Guthrie GC delivers stress-free home renovations, custom builds, and modern remodels with quality craftsmanship, transparent pricing, and on-time completion across Southern California.

Smart, space-efficient design and planning
Stylish kitchen and bathroom remodels
Superior craftsmanship and materials
Clear, transparent pricing every step
Reliable scheduling and timely completion

Experienced. Trusted. Built for California Living.

For decades, Guthrie GC has delivered high-quality design-build construction, whole-house renovations, and custom home projects across Southern California—built on precision, transparency, and trust.