In the dynamic and diverse city of Oakland, where urban living meets cultural creativity, more homeowners are discovering the value of building an Accessory Dwelling Unit (ADU). Whether you’re housing aging family members, planning to generate rental income, or simply need more functional space, an ADU offers the ideal combination of flexibility and long-term value.

At Royalty Builders, we specialize in delivering high-quality, fully permitted ADUs tailored to Oakland’s unique zoning and neighborhood guidelines. From concept to completion, we make your ADU vision a reality—with integrity, craftsmanship, and expert local experience.

Types of ADUs We Build in Oakland

Every Oakland neighborhood has its own character—and every home has its own opportunities for expansion. At Royalty Builders, we offer a wide range of ADU types designed to suit different lot layouts, goals, and budgets.

We build:

• Detached ADUs – Independent backyard units ideal for rentals, in-laws, or guests

• Attached ADUs – Built as extensions of your main home, perfect for family living

• Garage Conversions – An affordable way to turn underutilized space into living quarters

• Above-Garage ADUs – Great for compact lots where vertical expansion is ideal

• Basement Conversions – Transform Oakland’s older home basements into legal, livable spaces

Each ADU is custom-designed to match your property’s potential and meet all city requirements.

Full-Service ADU Design + Build in Oakland

At Royalty Builders, we offer a complete design-build solution for Oakland ADUs, meaning you only need one trusted partner to guide your project from start to finish. No need to coordinate architects, engineers, and contractors—we do it all in-house.

Our services include:

• Property evaluation and zoning research

• Custom ADU design and 3D visualization

• Structural engineering and energy efficiency compliance

• Complete permit management with the City of Oakland

• High-quality construction and finish work

• Final inspections, occupancy sign-off, and utility connections

We handle the logistics, so you can focus on the benefits of your new space.

How Much Does It Cost to Build an ADU in Oakland?

ADU costs in Oakland vary based on design complexity, materials, and whether you’re building new or converting existing space. We provide transparent, itemized quotes so you always know where your investment is going.

Typical ADU costs in Oakland:

• Garage Conversion: $120,000 – $170,000

• Attached ADU: $180,000 – $290,000

• Detached ADU: $200,000 – $350,000+

• Above-Garage ADU: $220,000 – $360,000

We also assist with financing options, including home equity strategies and renovation loans designed for ADU construction.

Permits for ADU Construction in Oakland – What You Need to Know

Oakland supports ADU development under California law, but navigating the permitting process can still be complex due to neighborhood zoning overlays, hillside lots, and fire zone restrictions. We’ve worked with the City of Oakland for years and know how to move your project through the system efficiently.

We manage:

• Zoning research and setback analysis

• Plan preparation, engineering, and submission

• Communication with planning and building departments

• Responses to city feedback and permit revisions

• Inspection coordination and final approvals

With Royalty Builders, you get a smooth permit process—no red tape, no stress.

Why Build an ADU in Oakland?

Oakland is one of the most exciting and diverse cities in California, with high demand for housing, excellent rental potential, and a strong sense of community. Building an ADU here offers both lifestyle and financial advantages.

Why Oakland homeowners choose to build ADUs:

• 🏡 Create space for multigenerational living or independent adult children

• 💼 Work-from-home office or creative studio in a separate, private setting

• 💰 Rental income potential in one of the Bay Area’s most in-demand rental markets

• 📈 Increase resale value with an income-producing asset

• 🔁 Prepare for long-term flexibility and changing family needs

With strong tenant demand and favorable zoning updates, Oakland is one of the best cities in California to build an ADU.

Frequently Asked Questions – ADUs in Oakland

Q: What size ADU can I build in Oakland?
A: Most detached ADUs can be up to 1,200 sq. ft., depending on lot size and zoning. Attached ADUs must follow main structure limitations. We’ll help determine what’s allowed.

Q: Will I need to add parking for my ADU?
A: Not always. Parking is often waived for ADUs near public transit, or if you’re converting a garage or other existing structure.

Q: What’s the average timeline for an ADU in Oakland?
A: Most projects take 6–10 months, including design, permitting, and construction. Complex hillside or fire zone properties may require more time.

Q: Can I rent out my ADU in Oakland?
A: Yes, ADUs may be rented as long-term housing units. Short-term rentals may be restricted depending on location. We’ll advise based on your zoning.

Contact Royalty Builders – Your Local Oakland ADU Contractor

Ready to turn your Oakland property into something more? Whether you’re building for family, rental income, or future flexibility, Royalty Builders is your trusted partner for custom, code-compliant ADU projects from start to finish.

📞 Contact us today and schedule your free ADU consultation in Oakland.

Beautiful spaces. Smart investments. Built right—with Royalty.