Concord, one of the East Bay’s most established cities, offers the perfect balance of suburban charm and urban convenience. As housing needs shift and families grow, many homeowners in Concord are turning to Accessory Dwelling Units (ADUs) as a smart way to add usable space, generate income, or support multigenerational living.

At Royalty Builders, we help Concord homeowners design and build high-quality ADUs that are custom-fit to their properties and goals. Whether you’re creating a backyard guest house, converting your garage, or adding a rental unit, we manage the entire process—so you can enjoy a stress-free experience from start to finish.

Types of ADUs We Build in Concord

Concord’s wide range of lot sizes and home layouts allows for flexible ADU design. At Royalty Builders, we tailor each project to match your vision, budget, and property type.

We specialize in:

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

• Attached ADUs – Seamless additions integrated with your main home

• Garage Conversions – Cost-effective way to repurpose space into a legal living unit

• Above-Garage ADUs – Great for maximizing space in compact or sloped lots

• Basement Conversions – Smart use of existing lower levels for private studios or apartments

Every ADU is built to code, beautifully finished, and designed to enhance both function and curb appeal.

Full-Service ADU Design + Build in Concord

We provide a complete design-build solution, meaning one team handles every detail—from early feasibility to final construction. With Royalty Builders, you don’t have to coordinate multiple vendors or manage permits on your own.

Our full-service offering includes:

• Property and zoning review

• Custom architectural plans and 3D renderings

• Structural engineering and Title 24 energy compliance

• Full permitting with the City of Concord

• High-quality construction and finishing

• Final inspections and occupancy certification

We manage the timeline, quality control, and compliance—so your project stays on track and stress-free.

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

Concord offers great opportunities for ADU construction at more competitive costs than nearby urban centers. Our pricing is transparent, detailed, and customized based on your lot conditions, unit type, and finishes.

Typical ADU pricing in Concord:

• Garage Conversion: $110,000 – $165,000

• Attached ADU: $170,000 – $275,000

• Detached ADU: $200,000 – $340,000+

• Above-Garage ADU: $220,000 – $370,000+

We can also help you explore financing options, including renovation loans, HELOCs, and ADU-specific funding programs.

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

Concord follows California’s ADU laws and has a streamlined permit process—but you still need to meet all local zoning, size, and design standards. We know how to navigate the City of Concord’s Planning and Building Divisions, so your project progresses efficiently and correctly.

We take care of:

• Setback and lot coverage verification

• Architectural submittals and revisions

• Plan check coordination

• Building permit issuance and inspections

• Final occupancy clearance and code compliance

We’ll keep your project compliant—and moving forward without delays.

Why Build an ADU in Concord?

Concord offers excellent schools, large lots, and access to both BART and major freeways—making it a top choice for homeowners who want flexibility and long-term value. Building an ADU here can improve your lifestyle today while preparing your property for tomorrow.

Top benefits of ADUs in Concord:

• 🏘 Comfortable space for family or guests

• 💼 Private home office or creative studio

• 💸 Rental income from long-term tenants

• 📈 Boosted resale value and marketability

• 🔄 More living options without leaving your home

ADUs are a smart way to invest in your home—and in your future.

Frequently Asked Questions – ADUs in Concord

Q: What is the maximum size for an ADU in Concord?
A: Most detached ADUs can be up to 1,200 sq. ft., depending on your lot size and setbacks. We’ll confirm your property’s limits during your consultation.

Q: Is parking required for an ADU in Concord?
A: In many cases, no. Parking is waived for certain ADUs, such as those near public transit or converted from existing space.

Q: Can I rent out my ADU?
A: Yes. Concord allows long-term rentals in permitted ADUs. We’ll ensure your unit complies with all local regulations.

Q: How long does it take to build an ADU?
A: Most ADUs in Concord take 6–10 months from design to final construction. We’ll provide a project timeline specific to your goals.

Contact Royalty Builders – Concord’s Trusted ADU Builder

Ready to add flexible, functional space to your Concord property? At Royalty Builders, we bring vision, experience, and craftsmanship to every ADU we build—backed by a process that makes it easy for you.

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

Smart space. Seamless process. Built with Royalty.