Welcome to the first article in Pinnacle Design and Build’s 10-part series on ADU construction and home remodeling in 2025. This kickoff guide focuses on everything you need to know about planning your ADU project.

1. What Is an ADU?

An Accessory Dwelling Unit (ADU) is a self-contained residential unit located on the same lot as a single-family home. ADUs can be garage conversions, detached backyard homes, or attached additions. At Pinnacle Design and Build, we’ve helped dozens of homeowners understand the ADU planning process to unlock their property’s full potential.

2. Why Build an ADU in 2025?

The demand for ADUs is skyrocketing in 2025 thanks to updated zoning laws, rising rental prices, and greater awareness of ADU benefits. Whether you’re planning to generate rental income, house aging family members, or increase property value, ADU planning is your first step toward success. Pinnacle Design and Build can help you determine if your lot is eligible and how to maximize space.

3. Zoning & Legal Requirements

ADU planning begins with checking zoning laws in your area. California law allows most single-family homeowners to build at least one ADU, but local restrictions still apply. Common ADU planning requirements include minimum lot size, rear yard setbacks, height limits, and parking exemptions. Always verify with your local planning department or consult with Pinnacle Design and Build.

4. Budgeting for Your ADU

One of the most important parts of ADU planning is budgeting. Costs vary by type: garage conversions and compact ADUs typically cost between $90,000–$170,000 depending on site conditions, design, and finish level. Site prep, materials, and permitting all affect the total. We help clients like you build realistic ADU planning budgets based on experience and local pricing.

5. Timeline Expectations

ADU planning timelines vary: permitting takes 2–4 months, while construction usually takes 3–6 months depending on complexity. At Pinnacle Design and Build, we guide clients through pre-construction, design, and city approvals to minimize surprises.

6. Choosing the Right Team

Your ADU project success depends on proper planning and hiring the right professionals. From architects to builders to permit runners, every phase requires coordination. Pinnacle Design and Build offers design-build services, meaning we handle everything from start to finish — making your ADU planning experience seamless.

Ready to explore your ADU planning options? Contact Pinnacle Design and Build today for a free consultation. We’ll help you assess your lot, create a custom plan, and navigate the permitting process with ease. Let’s build your dream ADU together.