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LIC #1028943
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ADU Builder
Custom Home Builder
Kitchen Remodeling
Bathroom Remodeling
San Gorgonio Builders is a licensed General B contractor based in Banning, about 15 minutes from Palm Springs. We design and build fully permitted ADUs, backyard guest houses and garage conversions across Riverside, San Bernardino, Orange County and Los Angeles County, including Banning, Beaumont, Redlands, Riverside, Palm Springs, Palm Desert, Claremont, Newport Beach and nearby communities.
At San Gorgonio Builders, we specialize in Accessory Dwelling Units (ADUs) that meet California code and actually work for how families live today. Our team manages everything from design and engineering to permits, inspections and final finishes, so you are not stuck coordinating different trades or fighting with the city on your own.
We have completed detached ADUs, over-garage ADUs and full garage conversions in Riverside, Redlands, Palm Springs, Claremont, Los Angeles and several coastal Orange County neighborhoods. Whether you are adding a rental unit, a guest suite or an in-law unit, we focus on solid structure, clean design and a smooth permit process.
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Custom ADU design, structural engineering and value-driven layout planning
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Detached backyard ADUs, over-garage ADUs and full garage conversions
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Complete permit handling and coordination with city or county building departments
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Utility trenching, sewer, electrical and HVAC hookups for ADUs
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Turn-key ADU construction, interior finishes and final inspections/approvals
Types of ADUs We Build in Riverside, San Bernardino & Southern California
Every property and city has different ADU rules, so we design your unit around the lot, setbacks and your goals. Common ADU projects we handle across Riverside, San Bernardino, Los Angeles and coastal Orange County include:
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Detached backyard ADUs with their own entry, patio and private living space
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Attached ADUs that share a wall with the main home but feel like a separate unit
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Over-garage ADUs and studio apartments built above existing or new garages
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Full garage conversions turned into rentable studios, guest suites or in-law units
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Two-story ADUs and larger layouts for multi-generational living
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ADUs designed for short-term rentals in cities where local rules allow it
ADU Cost, Timeline and Permit Process in Southern California
ADU budgets vary based on size, site conditions and finishes, but most of our projects fall into a predictable range. During your consultation we walk the property, talk through goals and give you a realistic ADU cost and timeline so there are no surprises.
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Site visit and rough budget: we walk your property, review setbacks and utilities, and outline a ballpark budget range
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Design and engineering: floor plans, elevations and structural plans ready for city or county review
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Permit submittal and approvals: we handle plan check comments and resubmittals until your ADU is approved
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Construction schedule: clear timeline for foundation, framing, rough trades, inspections and finishes
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Utility upgrades and hookups: electrical panel, sewer, water and gas sized correctly for the new unit
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Final inspections and move-in: we coordinate all final sign-offs so your ADU is ready for use or rent
We build code-compliant ADUs across Riverside County, San Bernardino County, Los Angeles County and coastal Orange County, always focusing on quality, clear communication and on-time completion.
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🛠 Service Area
ADU Builder & Remodeling Service Areas in Southern California
Based near Cherry Valley along the 10 and 60 freeways, San Gorgonio Builders provides ADU construction, garage conversions, custom home building and kitchen and bathroom remodeling throughout Southern California. We regularly work in Riverside County, San Bernardino County, Los Angeles County and coastal Orange County. If your city is not listed below, contact us and we can let you know if it is within our service area.