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ADU (Accessory Dwelling Unit) in Huntington Beach, CA
Also known as "Surf City USA," is a vibrant coastal city in Orange County, California, famous for its beautiful sandy beaches, world-class surfing, and relaxed atmosphere. With its mild, sunny weather year-round, it’s a perfect destination for outdoor enthusiasts and beach lovers. The Huntington Beach Pier offers stunning ocean views and a classic California experience, while Bolsa Chica Ecological Reserve provides a peaceful escape for nature lovers. Visitors can explore Pacific City, a stylish shopping and dining hub, or stroll along Main Street and 5th & PCH for lively nightlife and unique local shops. For those who love the outdoors, Huntington Central Park and Shipley Nature Center offer serene green spaces, while Huntington Dog Beach is a favorite for pet owners. Whether you're catching waves, enjoying a sunset bonfire, or indulging in great food, Huntington Beach offers the perfect mix of relaxation and adventure.
Building Permit Application Process in Huntington Beach
Constructing an Accessory Dwelling Unit (ADU) in Huntington Beach, California, involves a structured permit application process with associated fees and timelines. Here's a comprehensive guide to assist you:
1. Application Process:
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Online Submission: Huntington Beach utilizes the HB ACA online portal for permit applications. Through this platform, you can apply for permits, submit plans for review, and monitor your project's status.
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Required Documentation: Ensure you have all necessary documents, including detailed plans and any other required materials, before submission.
2. Fees:
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Plan Check and Permit Fees: Fees are determined based on the specifics of your ADU project. As of July 1, 2024, a 3% service fee applies to all credit and debit card transactions.
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Public Works Fees: For ADUs, specific rates are outlined in Table A of the Public Works Fee Schedule. For instance, certain fees are set at $1,277.00.
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Additional Fees: Depending on your project's scope, additional fees may apply, such as impact fees. Notably, ADUs under 750 square feet are generally exempt from these fees.
3. Review Timelines:
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Initial Review: Once your application is submitted and deemed complete, the current review time is approximately 5 business days.
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Plan Review Phases:
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First Submittal: 20 business days
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Second Submittal: 10 business days
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Third Submittal: 5 business days
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Plan review and permit issuance commence only after the application is complete, all required documents are received, and fees are paid.
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State-Mandated Review Period: California law requires that ADU applications be processed within 60 days from the date a complete application is submitted.
4. Additional Considerations:
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Coastal Commission Zone: If your property is within the Coastal Commission Zone, anticipate additional review time and potential costs.
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Construction and Inspections: Post-permit issuance, ensure your ADU complies with all local building codes. Schedule necessary inspections at various construction stages as mandated by the city.
For the most accurate and up-to-date information, it's advisable to consult the City of Huntington Beach's official website or contact the Community Development Department directly.

Types of construction projects we handle in Huntington Beach
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Accessory Dwelling Unit (ADU) Development
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Additions & Expansions
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Renovation & Modernization
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Garage Conversions
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Interior Remodeling
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Fix and Flip Ventures
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Commercial Constructions
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Tenant Space Enhancements
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3D Project Visualization
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Financing Solutions
Steps to Schedule Inspections in Advance
Here's an overview of the inspection process:
1. Scheduling Inspections:
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Online Requests: All inspection requests should be submitted through Huntington Beach's HB ACA online portal. This platform allows you to apply for permits, submit plans for review, and schedule inspections.
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Processing Times: The city has established processing times for plan reviews:
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Initial Application Review: 5 business days
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First Submittal Plan Review: 20 business days
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Second Submittal Plan Review: 10 business days
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Third and Subsequent Submittals: 5 business days each
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Revisions: 5 business days
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These timelines commence once a complete application and all required documents are submitted, and fees are paid.
2. Required Documentation On-Site:
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Approved Plans: Ensure that city-approved plans are available on-site for the inspector's review.
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Permit Card: Have the permit card accessible for the inspector to sign off on each completed phase.
3. Access Requirements:
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Site Access: Provide full access to the construction area. Inspectors will not enter a property if no one is present or if the occupants are minors.
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Construction Hours: Adhere to Huntington Beach's designated construction hours to avoid potential violations.
4. Final Inspection:
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Completion Check: Once all work is finished, a final inspection is required. This step is crucial before the issuance of a Certificate of Occupancy for new constructions.
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Additional Approvals: Depending on your project, final inspections from other departments, such as Planning, Fire, or Public Works, may be necessary before the building final.
5. Compliance and Deviations:
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Adherence to Plans: Ensure construction aligns with the approved plans. Any deviations can lead to delays and may require re-evaluation.
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Engineering Changes: Modifications to engineered plans necessitate notifying the Engineer of Record and may require a new plan check review.
For detailed information and assistance, it's advisable to contact Huntington Beach's Building and Safety Services directly or visit their official website.
Disclaimer: The information provided on this page is intended for general guidance only and may not be complete or accurate. For the most current and precise information regarding ADU construction requirements and regulations in the City of Huntington Beach, please refer to the official City of Huntington Beach website. We strongly recommend verifying all details with the official city resources before proceeding with any ADU project.
Best time to do construction in Huntington Beach
Now is the best time to build an ADU (Accessory Dwelling Unit) in Huntington Beach due to several favorable factors, including relaxed regulations, increasing rental demand, and potential financial benefits.
1. Streamlined Regulations & Faster Approvals
California has passed multiple laws making it easier to build ADUs, and Huntington Beach has aligned with these state policies to simplify the process. The city has reduced barriers like parking requirements and impact fees, making approvals faster and more accessible.
2. High Rental Demand & Income Potential
With rising housing costs in Orange County, ADUs offer a great way to generate passive income through long-term rentals or even short-term stays. Huntington Beach, a popular coastal destination, attracts renters looking for affordable housing near the beach.
3. Property Value Boost
An ADU increases property value by adding additional living space. Whether used as a rental, guest house, or home office, an ADU can significantly improve the long-term worth of your home.
4. Favorable Interest Rates & Incentives
There are state and local grants, financing programs, and potential tax benefits that make building an ADU more affordable right now. Programs like CalHFA ADU Grants can help cover some costs.
5. Flexible Living Options
An ADU can serve as a housing solution for family members, such as elderly parents (aging in place) or young adults needing affordable housing while staying close to home.
With lenient regulations, strong rental demand, and financial incentives, there has never been a better time to build an ADU in Huntington Beach. If you're considering one, acting now can help you take full advantage of these benefits before any future policy changes or cost increases.