ADU Construction OC specializes in accessory dwelling units in San Clemente, CA. Services include detached ADUs, garage conversions, above-garage ADUs & JADUs. Founded by Jed Stamen with 30+ years experience.
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Coronado Construction builds Accessory Dwelling Units (ADUs) in San Diego, CA. From garage conversions to detached units, their ADUs boost property value, generate rental income, and offer flexible living using quality, energy-efficient materials.
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OneStop ADU is a San Diego County ADU contractor with 25+ years of experience. They offer custom-built detached ADUs from ~$335/sq ft, including solar, permits & plans. Free feasibility studies available. ADA-compliant units offered.
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Plan your ADU project with expert guidance. Rost Architects covers key factors like setbacks, height limits, floor area, utilities, and local guidelines to help homeowners avoid costly mistakes and build compliant, well-designed accessory dwelling units.
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Streamline Design Group offers ADU design and permitting in San Diego, covering detached, attached, JADU, garage conversions, and multi-family units. Referenced in the State ADU handbook, they deliver permit-ready plans at 40–60% less than architect fees.
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Solana Beach is a beautiful coastal community in the City of San Diego, where property values and flexible living are priced at a premium. An accessory dwelling unit (ADU) provides you with the opportunity to take advantage of this by increasing your home’s square footage, generating rental income, and increasing the value of your property.
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ADU Company San Diego County specializes in off-site ADU construction, offering efficient, affordable accessory dwelling units. From granny flats to detached ADUs, their expert team guides clients from concept to Certificate of Occupancy.
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Lusso Design & Build is a licensed San Diego ADU contractor specializing in ADUs and JADUs. They handle design, permits, and construction, ensuring compliance with California regulations while helping homeowners add rental income or flexible living space.
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Homeowners across the San Diego area looking to expand their living space or create a rental opportunity turn to the trusted San Diego Builders at The Avalon Company. With more than three decades of experience, they specialize in designing and constructing high end accessory dwelling units that blend seamlessly with your existing property while increasing functionality and property value.
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The Springfield by Superior ADUs is a 2-bed, 2-bath detached ADU with open-concept living, vaulted ceilings, mini-split HVAC, kitchen island, ample storage, and optional ethanol fireplace—ideal as a granny flat or in-law suite.
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Custom Home Builders Malibu specializes in ADU construction, backyard Casitas & granny flats. They offer turnkey design-build services, handling permits & compliance with California ADU laws for legal, independent living spaces.
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Armstrong Builders Inc. is a licensed ADU contractor in Greater San Diego specializing in accessory dwelling units, granny flats, and casitas. They offer full design-build services, custom floor plans, early price locks, and in-house teams.
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Building a granny flat (ADU) in San Diego can boost property value and ease housing needs. Detached ADUs up to 1,200 sq ft start at $250/sq ft. Fee waivers may save homeowners $14,000+. Rules apply regarding zoning, lot use, and size limits.
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Bourke Construction builds custom ADUs in Orange County, including detached units, garage conversions, and JADUs. They manage design, permits, and construction, helping homeowners add rental income, multi-generational living space, or property value.
read moreSan Marcos is one of the fastest-growing cities in San Diego County, with a booming population and a strong demand for additional housing. As a city that blends suburban neighborhoods with proximity to California State University San Marcos (CSUSM), there is a particularly high demand for Accessory Dwelling Units (ADUs) to house students, faculty, and multigenerational families. Hiring experienced ADU contractors in San Marcos, CA is essential to navigate the city's specific permitting processes and make the most of your property investment.
ADU projects in San Marcos are governed by both California state ADU law and the City of San Marcos Municipal Code. The city has adopted state guidelines that allow homeowners to build ADUs on single-family and multifamily lots. Key regulations include:
All ADU permits in San Marcos are processed through the City of San Marcos Development Services Department. A qualified local ADU contractor will be familiar with the city's online permitting portal and typical review timelines, which can help avoid costly delays.
Choosing the right ADU builder in San Marcos means finding a licensed general contractor with proven experience in San Diego County's regulatory environment. The best contractors will handle everything from design and engineering to permit submission and final inspection. Look for contractors who:
With San Marcos home values continuing to rise and rental demand driven by CSUSM and nearby employers in the San Marcos Innovation Corridor, adding an ADU is one of the smartest investments a homeowner can make. Whether you're building a detached backyard cottage, converting a garage, or adding a JADU, working with a skilled ADU contractor in San Marcos, CA ensures your project is completed on time, on budget, and fully up to code.