Harmony Design & Development builds custom ADUs across the San Francisco Bay Area, including detached units, garage conversions, and in-law suites. They manage permits, design, and construction from start to finish.
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Tiny House Basics designs custom tiny house trailers with insulated floors, no thermal bridging, and build-ready delivery. Models range from 10–50ft, up to 12ft wide, in bumper pull or gooseneck styles. Lifetime consulting included.
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ADU Premium builds eco-friendly, RVIA-certified tiny homes and ADA-accessible ADUs. Models range from 90–360 sq ft, starting at $49,200. Includes permits, delivery, and installation. Financing available via RV loans, HELOC, and more.
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Optivest Build is a licensed general contractor offering ADU construction, garage conversions, home additions, renovations, and new builds. They manage permits, design, and inspections, delivering residential and commercial projects on time and within budget.
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CityPaks is a minority & woman-owned ADU builder in the San Francisco Bay Area specializing in affordable, sustainable backyard cottages & detached ADUs using SIP panels. No crane needed, no sales tax, pre-approved in San Jose.
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Diagram Architecture & Diagram Design Build completed a 871 sq ft detached ADU with 2 beds, 1.5 baths, open floor plan, stainless appliances, custom closets & natural light—maximizing compact living through integrated design-build expertise.
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Nestadu is a full-service ADU builder offering custom site-built and prefab accessory dwelling units. Prefab models range from $115K–$317K. Custom builds start at $400/sq ft. Financing options include HELOCs, construction loans, and CA grants.
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ResCom ADU is a full-service ADU builder in Walnut Creek, CA, offering design, permits, engineering, construction & hookups. With 100+ years of combined experience, they deliver custom, cost-effective accessory dwelling units using SIPs & Net-Zero technology.
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Manzanita Design Build is an East Bay ADU contractor specializing in accessory dwelling units. Serving Berkeley, Oakland, Alameda & more. New ADU construction starts ~$300K, 5–8 month build time. Licensed (#1034108) & insured.
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Colibri Kitchen & Bath offers full-service ADU construction in Oakland, handling design, permitting, and building. Services include site assessment, architectural plans, 3D renderings, and complete construction from foundation to finishing.
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prefabADU is a Bay Area ADU builder with 16+ years of experience offering affordable kits and plans from under $45K. With 12 state-approved plans valid across California, they simplify permits, design, and installation for homeowners.
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Kaplan Architects added a 280 sq ft ADU to an existing garage in Crocker Highlands, Oakland. Built into a hillside, it features a kitchenette, full bath, and Tudor-style exterior, serving as office, studio, or rental unit.
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We Do Construction specializes in ADU garage conversions across the San Francisco Bay Area. Licensed and insured, they handle permitting, 3D planning, construction, and interior design, offering free estimates for homeowners.
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Licensed ADU contractor Full Steam Ahead Construction serves East Bay homeowners with custom accessory dwelling units, including garage conversions, backyard cottages & in-law suites. Serving Concord, Oakland, Berkeley & more.
read moreRohnert Park is one of California's few master-planned cities, originally developed in the 1950s by developer Paul Golis. This unique urban layout, characterized by its distinctive neighborhood circles and uniform residential streets, presents specific considerations for ADU contractors in Rohnert Park. The city's structured design means that lot sizes, setbacks, and neighborhood aesthetics play a significant role in how Accessory Dwelling Units are planned and constructed throughout the community.
ADU contractors working in Rohnert Park must navigate both California state ADU laws and the city's local ordinances. Under California law (AB 68, AB 881, and SB 13), homeowners have broad rights to build ADUs, and Rohnert Park has aligned its local codes accordingly. Key regulations that experienced Rohnert Park ADU builders must be familiar with include:
Professional ADU contractors in Rohnert Park, CA typically offer a range of construction options suited to the city's residential neighborhoods. Given the prevalence of single-family homes with attached garages in Rohnert Park's circular neighborhood design, garage conversions are among the most popular ADU projects. Other common ADU types include:
Hiring a licensed ADU contractor familiar with Rohnert Park is essential for a smooth permitting and construction process. Local contractors understand the city's Community Development Department requirements and can efficiently manage permit applications, inspections, and compliance with both Sonoma County and municipal standards. With Rohnert Park's housing demand continuing to grow — driven in part by its proximity to Sonoma State University and major employers in the region — ADUs represent a smart investment for homeowners looking to add rental income or multigenerational living space.
If you're considering adding an ADU to your Rohnert Park property, working with an experienced local ADU contractor is the best first step. From initial site assessment and design to permit submission and final construction, a qualified contractor will ensure your project meets all Rohnert Park building codes and maximizes the value of your investment.