ADU Builder Oakland
Custom, High-Quality Accessory Dwelling Units
Are you looking to build an Accessory Dwelling Unit (ADU) in Oakland, CA?
Keep Your Family Close with a Custom ADU
Whether you want to create a comfortable space for aging parents, independent living for adult children, or a guest house for extended family, ADU Builders Group is your trusted ADU builder in Oakland, California.
With over 20 years of experience, we specialize in designing and constructing high-quality, custom-built ADUs that strengthen family bonds, enhance multigenerational living, and improve your lifestyle while ensuring compliance with local building regulations.
Build with Peace of Mind
We are the only ADU company in Oakland that offers a three (3) years project warranty on our services with complementary annual project inspection. All of this on top of the ten (10) years warranty on structural components.
✔ 3 Years Project Warranty
✔ Complimentary Annual Inspection
✔ 10 Years Structural Warranty
Why Choose Us?
1. Peace of Mind with Industry-Leading Warranties
✅ 3 Years Project Warranty – We stand by our craftsmanship, ensuring any issues within the first three years are addressed promptly and professionally.
✅ Free Annual Inspection – Our commitment to quality extends beyond project completion, we provide a free annual inspection, for the first three years after project completion, to ensure your ADU remains in excellent condition.
✅ 10 Years Structural Warranty – Our ADUs are built to last, and we back them with a decade-long structural warranty, giving you confidence in the longevity of your investment.
2. Expert Guidance & Hassle-Free Process
✅ Permitting & Compliance Experts – Navigating Sunnyvale's ADU regulations can be complex, but our experienced team ensures a smooth approval process, handling all paperwork and city requirements to prevent costly delays.
✅ 20+ Years of Construction Expertise – With decades of expertise in the construction industry and a dedicated focus on ADUs for over five years, we bring the knowledge, efficiency, and craftsmanship necessary to deliver high-quality results every time.
✅ Fast & Efficient Construction – Our streamlined process and skilled project management ensure your ADU is completed on time without unnecessary disruptions to your daily life.
3. Superior Craftsmanship & Custom Designs
✅ Aging-in-Place & Accessibility Features – Our ADUs are designed with the future in mind, incorporating accessibility features such as wider doorways, step-free entrances, and senior-friendly layouts for long-term convenience.
✅ Tailored Solutions for Every Home – Every family’s needs are unique, which is why we create custom ADU designs that maximize space efficiency, match your home’s aesthetics, and fit your lifestyle.
✅ High-Quality Materials & Precision Engineering – We use only top-tier materials sourced from our trusted, high-quality suppliers, ensuring that your ADU is durable, safe, and built to last for generations.
4. A Lifestyle Solution for Your Family's Needs
✅ Keep Loved Ones Close – Give elderly parents or adult children a private yet nearby living space, ensuring family members stay connected while maintaining their independence.
✅ Multigenerational Living Made Easy – Whether it's providing a comfortable home for aging parents or giving young adults a head start, our ADUs foster a supportive and practical living arrangement.
✅ Enhance Your Home’s Functionality – More than just extra space, an ADU can serve as a dedicated home office, personal gym, creative studio, or even a guest house for visiting relatives and friends.
About Us
Partners and Affiliations
ADU Builders Group Inc.
ADU Builders Group is a local, family-owned company dedicated to providing innovative solutions to California’s housing crisis, with passion for helping multigenerational families. Having high regards to family-oriented values, our work reflects a deep commitment to creating practical, high-quality custom ADUs that bring loved ones closer while respecting privacy and independence. With heart, craftsmanship, and a focus on community, we build homes that inspire and unite.
✔ Proudly Local
✔ Family-Owned
✔ Licensed and Insured
A Partner & Sister-Company of
Imagine Unique Remodels
Our Services and Expertise
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What's The Best Type of ADU for You?
Our Process
Consult with our ADU Experts
1
To start, discuss your needs, goals, and vision for your ADU with our experts. Start by having a phone consultation with us at (408) 413-3373. We'll set your schedule for the in-person meeting during the call. You'll receive expert recommendations and estimate for your ADU during the consultation phase at no cost.
2
Design with our Architect
Need to customize your ADU based on your needs and requirements? Design your own ADU and turn your ideas into an architectural plan with our Architect.
4
Construct & Pass Inspections
Our Project Managers will be in constant communication with you during construction and will ensure that your projects pass all inspections.
3
Obtain Permits Effortlessly
Our Liaison Officer will take care of the permits for you and work with the city to ensure that all paperworks are in place quickly and efficiently.
5
Enjoy and Maintain your ADU
Live the lifestyle you want and be worry-free. We'll continue to provide support and care to your project with our warranties and annual project inspection.
Local ADU Regulations in Oakland
Below is an overview of ADU regulations in Oakland. If you need more details about how these rules apply to your property, contact us to get connected with an ADU expert.
Where ADUs Are Allowed
ADUs are typically permitted on properties zoned for residential use, though there may be exceptions. Your property must have an existing or planned single-family home or a multi-family building, such as a duplex, triplex, or apartment complex. Reach out to us to determine if your property is eligible for an ADU.
Minimum Lot Size
There are no minimum lot size requirements—any property, regardless of its dimensions, may qualify for an ADU.
Number of ADUs Allowed
Single-family homes can typically have one or two ADUs. Multi-family properties may be eligible for multiple ADUs, depending on the number of existing units and the type of ADU being constructed. Get in touch with our team to find out how many ADUs your property can support.
Parking Requirements
Conversion and junior ADUs generally do not require additional parking. However, attached and detached ADUs typically require at least one parking space unless an exemption applies. Reach out to us for expert guidance on Oakland’s ADU parking regulations.
Featured Project
ADU Builder Oakland FAQs
How long does it take to build a small-scale home in Oakland?
The full process typically takes 9 to 14 months, including design (1–2 months), permit approval (3–5 months), and construction (4–6 months). Homes located in hillside zones, historic neighborhoods, or fire-prone areas may take longer due to added reviews and safety requirements.
What’s the typical cost to build a backyard home in Oakland?
Costs usually fall between $475 and $525 per square foot, depending on materials, finishes, and site complexity. A 750 sq. ft. in-law unit may start around $375,000, while larger or custom-built dwellings can exceed $500,000. Be sure to factor in additional costs like permit fees, utility connections, and potential seismic upgrades.
Can the new unit connect to the existing utilities?
Yes. Most compact homes in Oakland can share water, sewer, and electrical service with the primary residence. However, separate meters may be required for rental use, and older properties might need electrical or plumbing upgrades.
Are there energy-efficiency incentives available?
Yes. Homeowners may qualify for BayREN rebates, solar energy programs, EV charger incentives, and appliance efficiency upgrades. All new dwellings must meet California Title 24 energy standards, and units under 750 sq. ft. are typically exempt from impact fees.
Why are more people adding in-law suites or backyard cottages?
These compact homes provide affordable, flexible living solutions for aging parents, returning college students, or renters. They allow homeowners to make better use of their lot and help meet Oakland’s demand for more housing choices without altering neighborhood scale.
Is there strong interest in these types of homes in Oakland?
Yes. With rising housing costs and limited availability, many residents are adding garage conversions, guest homes, or detached units to accommodate family, earn rental income, or create private work-from-home spaces.
What kinds of designs are popular?
Oakland homeowners often choose contemporary, Craftsman, or minimalist designs that blend well with existing architecture. Features like open floor plans, natural light, smart home systems, and outdoor patios are common in both new builds and conversions.
Where can I find guidance on permits and zoning?
The Oakland Planning & Building Department provides helpful resources online, including zoning maps, permit checklists, and development standards. You can also visit the Permit Center or schedule a pre-application consultation to explore your property’s potential.
How do these homes affect neighborhood character?
When designed thoughtfully, small secondary homes add gentle density without disrupting the look and feel of the neighborhood. Oakland’s regulations ensure that height limits, setbacks, and design compatibility are respected—especially in sensitive areas like historic districts or near the urban-wildland interface.
Do I need to add parking for the new unit?
Not always. If the unit is within ½ mile of public transit, part of a garage or basement conversion, or meets other state exemptions, no extra parking is required. In other situations, one off-street space may be necessary.
Service Areas
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