Attached ADU near Petaluma, CA

Dwelling Lab is an Oakland-based ADU design firm offering full-service planning, schematic design, construction drawings, permitting, and construction oversight for detached ADUs, attached additions, and garage conversions.

Imagine the possibilities that a beautifully crafted ADU (accessory dwelling unit) brings to your Berkeley or Bay Area property. Whether it’s creating a cozy retreat for guests, a comfortable living space for family members, or an additional source of income through rental, design your ADU to enrich your life.

Realty Builders Inc. is a licensed ADU contractor specializing in custom accessory dwelling units, including in-law suites, granny flats, garage conversions & rental units, offering streamlined permitting & guaranteed workmanship.

Collins Remodeling is a licensed ADU contractor in Alameda, CA, specializing in detached ADUs, garage conversions, JADUs, and granny flats. They manage permitting, design, and construction, helping homeowners add value and rental income.

Sonoma Residential Services is a Sonoma County contractor specializing in ADUs, garage conversions, granny flats, JADUs, home additions, and kitchen & bathroom remodels, offering local permitting expertise for residential projects.

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.

Green Living Builders LLC is a licensed, bonded Berkeley CA general contractor specializing in ADU construction, garage conversions, home remodels, and new builds across the East Bay. Diamond Certified with deep local expertise.

Home by Tom is a Bay Area ADU contractor with 21+ years of experience serving Walnut Creek. They build detached ADUs, attached ADUs, and garage conversions, managing design, permits, and construction for rental income or multi-generational living.

DNM Architecture is a California-based firm specializing in ADU design and permitting. Their ADUxDNM program covers site analysis, design, permitting, and construction management, offering detached ADUs, garage conversions, and more.

West Coast ADU is a California-based ADU builder offering prefab & manufactured accessory dwelling units. They help homeowners add rental income, house family members & boost property value with streamlined permitting & construction.

Masterful Construction is a San Mateo ADU contractor serving the Bay Area. They build detached ADUs, garage conversions, and in-law suites, handling design, permits, and construction. Discounts available for military and first responders.

At Smith and Son Construction, they specialize in designing and building high-quality ADUs in San Leandro, CA. Whether you envision a private guest house, a rental unit, or a home office, they deliver innovative designs, expert craftsmanship, and a stress-free construction experience.

E&E General Construction Inc (License #1067263) specializes in ADU construction and garage conversions in Richmond, CA. Services include detached ADUs, attached units, and garage conversions across the Bay Area. Free estimates available.

ADUs (accessory dwelling units) are self-contained homes on existing properties. California's 2020 laws simplified ADU permits statewide. Alpha ADU Solutions, a San Francisco-based ADU builder with 100+ team members, specializes in granny flats, garage conversions & in-law suites.