DSA Architects designed an 850 sq. ft. second-floor ADU in Berkeley Hills for multi-generational living. Features 2 beds, 1 bath, open layout, Tilden Park views, roof deck, solar PV, heat pumps, and gray-water system.
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Valley Home Builders Inc. is a Silicon Valley design-build contractor serving Santa Clara & San Mateo Counties. Founded in 2005, they specialize in kitchen remodeling, ADU construction, and home renovations across San Jose, San Mateo & beyond.
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Eco Scale Construction builds ADUs in Sunnyvale, Los Altos & Palo Alto, CA. Services include detached ADUs, garage conversions & JADUs. Costs range from $80K–$400K+. Fully compliant with California ADU regulations.
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Bobcat Builders is a Bay Area ADU contractor specializing in accessory dwelling units in Palo Alto. They offer attached & detached ADUs, garage conversions, granny flats & in-law suites, backed by a Two Year Satisfaction Guarantee.
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Edri Construction, Inc. in Burlingame offers full-service ADU construction across the Bay Area, including garage conversions, detached ADUs, attached additions, and custom interiors, with energy-efficient builds and multi-generational living solutions.
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Hamilton Exteriors builds detached ADUs, garage conversions, and JADUs across 6 Bay Area counties. Licensed (CSLB #1078806), insured, and bonded. Projects run 5–9 months with fixed-price contracts. CalHFA grants and $0-down financing available.
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Edri Construction, Inc. is a Berkeley-based general contractor specializing in ADU construction across the Bay Area. Services include garage conversions, detached ADUs, attached additions, granny flats, and custom interiors, with full project management from permits to finishing.
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Wise Builders is a Bay Area ADU contractor with 20+ years of experience in accessory dwelling units, garage conversions, and attached or detached ADU construction across San Jose, Sunnyvale, and Silicon Valley. Free estimates available.
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Urban Building Workshop is a full-service architecture firm in the Bay Area specializing in custom homes, remodels, and ADUs. Experts in Marin County, San Francisco, and Sonoma County permitting, they deliver efficient, light-filled designs.
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Type Five is a Berkeley, CA-based ADU builder offering custom backyard cottages, granny flats & in-law suites. They combine modular design, transparent pricing & streamlined construction for stress-free, high-quality detached ADUs built to last.
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Step-up Construction is a San Jose ADU contractor specializing in garage conversions, attached additions, and detached backyard ADUs. Costs range from $80K to $475K. They guide homeowners through permits, zoning, and San Jose's ADU regulations.
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Hilario Construction is a Santa Rosa ADU contractor offering full-service accessory dwelling unit construction, including permits, design, and turnkey delivery. Serving Santa Rosa, Windsor, and Petaluma, they build detached ADUs, granny flats, and in-law suites compliant with California ADU laws.
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ELS Home Builders specializes in ADU design and construction across San Jose, Palo Alto & the SF Bay Area. Services include granny flats, in-law suites, garage conversions & detached ADUs for multigenerational living.
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Urban Shore Builders offers full-service ADU design & construction, including garage conversions, detached units & additions. As a turnkey ADU contractor, they handle permits, design & build. Services include plumbing, electrical, HVAC & retaining walls.
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SFBay ADU is a Bay Area ADU contractor offering full-service design, permitting, and construction. Specializing in 600–1,200 sq ft units, they offer studio, 2-bed, garden cottage, and in-law suite options, with projects completed in as little as 6 months.
read moreOrinda, California, nestled in the scenic hills of Contra Costa County, is known for its wooded, hillside terrain, top-rated schools, and upscale residential neighborhoods. These characteristics make it a highly desirable location for homeowners looking to add an Accessory Dwelling Unit (ADU) to their property. However, the unique topography and strict local regulations mean that hiring experienced ADU contractors in Orinda is absolutely essential for a successful project. From navigating steep slopes to complying with fire safety requirements in a high-risk fire zone, building an ADU in Orinda comes with its own set of challenges and opportunities.
Orinda falls under the jurisdiction of the City of Orinda Community Development Department, which oversees all ADU permits and building approvals. Like all California cities, Orinda must comply with California state ADU laws (AB 68, AB 881, SB 13), which have significantly streamlined the approval process. However, local zoning ordinances still apply. Key regulations that ADU contractors in Orinda must navigate include:
Working with a licensed and experienced ADU contractor familiar with Orinda's specific requirements can save homeowners significant time and money. Local contractors understand the nuances of building on hillside lots, including foundation challenges, drainage considerations, and soil stability. They are also well-versed in Orinda's design review process, which may apply in certain neighborhoods to ensure new structures are visually compatible with the surrounding environment.
Given the large lot sizes typical of Orinda properties, homeowners have several ADU options to consider:
Whether you're looking to generate rental income, house a family member, or increase your property value, an ADU is a smart investment in Orinda's competitive real estate market. Connect with a qualified ADU contractor in Orinda, CA who can guide you through every step — from initial design and permitting to final construction — ensuring your project meets all local and state requirements efficiently and professionally.