Next Level ADU Builders, serving Los Angeles, Riverside & Pico Rivera since 1997, specializes in ADU construction—detached units, granny flats & casitas—plus HVAC, remodeling & roofing, with financing options available.
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NAMA Construction is a family-owned Los Angeles remodeling company with 75 years of experience. Services include ADU construction, kitchen & bathroom remodeling, whole house renovations, flooring, and painting across Greater LA.
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Kirmina Construction (License #1124572) is a licensed general contractor in Riverside, CA, offering home additions, ADUs, garage conversions, room extensions, and outdoor living spaces across Riverside, San Bernardino, and Orange County.
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An Accessory Dwelling Unit (ADU) adds value, rental income, and flexibility to your property. LA Developing Inc. specializes in ADU construction in Los Angeles, offering garage conversions, detached builds, and attached additions with full project... read more
Pasadena Master ADU Builder is a top ADU contractor in San Gabriel Valley, offering detached ADUs, garage conversions, and JADUs. With 20+ years experience, 150+ projects, and 98% satisfaction, they deliver compliant, high-quality builds boosting ... read more
iHome Design & Remodel specializes in custom ADU and casita construction, offering full-service builds from design to completion. Services include garage conversions, detached ADUs, permit handling, and free 3D consultations for homeowners.read more
PacGen Construction is a Temecula-based ADU contractor specializing in granny flats, casitas, and in-law suites. They offer full design-build services, permitting assistance, and custom ADU construction for homeowners seeking rental income or extr... read more
Joseph Construction Builders LLC is a licensed detached ADU builder in Newport Beach & Costa Mesa, CA, with 30+ years of experience. Services include detached ADUs, garage conversions, JADUs, and home additions across Orange County.
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Full-service ADU contractor offering design, permitting, and construction of detached ADUs, attached ADUs, JADUs, and garage conversions. Most builds complete in 3–5 months. Includes quartz countertops, tile showers, and luxury vinyl flooring. R... read more
Build ADU Home Remodel is a trusted, licensed general contractor serving homeowners throughout the Inland Empire with full-service ADU construction. Whether you're looking to add rental income, house extended family, or increase your property valu... read more
OC Builders Group specializes in ADU construction in California, offering detached ADUs, garage conversions, granny flats & in-law suites. They help homeowners navigate permits, zoning & state regulations to add rental income or housing va... read more
Team All Star Construction (CSLB #1009760) is a California-licensed design-build contractor specializing in Accessory Dwelling Units (ADUs) for homeowners across Southern California. The company serves San Bernardino County, Riverside County, Oran... read more
Fullerton ADU Builder offers expert ADU construction services including detached ADUs, garage conversions, JADUs, in-law suites & home additions. 10+ years experience, licensed & insured, transparent pricing, free consultations & full ... read more
WM Construction is a licensed ADU contractor in Los Angeles offering full-service builds, from site assessment and design to permitting and post-construction support, helping homeowners add granny flats, garage conversions, and in-law suites compl... read more
San Bernardino, California, is the county seat of San Bernardino County — the largest county by area in the contiguous United States. As housing demand continues to surge across Southern California, ADU contractors in San Bernardino are playing a critical role in helping homeowners maximize their property value and create additional living space. With a median home price significantly lower than coastal cities like Los Angeles, San Bernardino presents an excellent opportunity for property owners to invest in Accessory Dwelling Units (ADUs) and generate rental income.
Before breaking ground, it's essential to understand the local rules governing ADU construction. San Bernardino ADU contractors must navigate regulations set by both the City of San Bernardino Development Services Department and California state law. Key regulations include:
Experienced ADU builders in San Bernardino work with a variety of unit types to suit different lot sizes and homeowner goals. Given that many San Bernardino properties feature larger lots compared to coastal cities, detached ADUs are particularly popular here. Common ADU types include:
Hiring a licensed ADU contractor familiar with San Bernardino is crucial for a smooth construction process. Local contractors understand the specific requirements of the City of San Bernardino's Building and Safety Division, including fire safety standards relevant to the region's high fire hazard severity zones. They are also familiar with utility connection protocols through Southern California Edison and local water agencies.
The cost of building an ADU in San Bernardino typically ranges from $100,000 to $300,000, depending on the size, type, and finishes selected. Garage conversions tend to be the most affordable option, while custom detached ADUs command higher budgets. Working with a reputable San Bernardino ADU contractor ensures accurate cost estimates, proper permitting, and quality construction that meets all California building codes.