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Top 10 Companies Providing ADU Permits in San Diego

ADUs and Their Importance

An Accessory Dwelling Unit (ADU) is a self-contained living space that can be added to your property. This could be a garage conversion ADU, a backyard home, or even a custom ADU in Malibu. In San Diego and across California, ADUs have become a popular solution for homeowners looking to increase living space, generate rental income, or accommodate family members. Before embarking on any ADU project, it’s important to obtain the correct ADU permits. Without these permits, you could face fines, project delays, or even be required to dismantle your ADU. Fortunately, San Diego boasts a variety of top-tier ADU permit companies that can simplify the process for you.

Why Get an ADU Permit in San Diego?

Every ADU project in California, including garage conversions and backyard ADUs, requires an official permit. The permit ensures that your ADU complies with building codes, zoning regulations, and safety standards. Securing an ADU permit in California is essential for legal recognition, resale value, and the ability to rent out your ADU.


Additionally, obtaining a permit ensures that your ADU is inspected properly, guaranteeing that it’s safe and up to code. This process is especially critical for garage ADU conversions or new backyard homes in San Diego.

Top 10 Companies Providing ADU Permits in San Diego

Here’s a list of the best ADU permit companies in San Diego that are known for their expertise, professionalism, and track record in handling the ADU permit process:

1) Fortune ADU

Fortune ADU stands out as a leading name in the ADU construction industry. They offer comprehensive services, from the design and construction of your ADU to the process of securing your ADU permit. Specializing in garage ADU conversions and custom ADUs in Santa Barbara, Fortune ADU ensures a smooth, hassle-free process for homeowners in San Diego. ADU construction industry. They offer comprehensive services, from the design and construction of your ADU to the process of securing your ADU permit. Specializing in garage ADU conversions and custom ADUs in Santa Barbara, Fortune ADU ensures a smooth, hassle-free process for homeowners in San Diego.

2) Next Gen ADU

Next Gen ADU focuses on energy-efficient, affordable backyard homes and garage ADU conversions in California. Their team is highly experienced in helping homeowners secure the necessary ADU permits for Southern California properties, making them a reliable option for any ADU builder in San Diego.

3) Pacific Green Homes

Pacific Green Homes is known for sustainable, eco-friendly custom ADUs built in Malibu and Santa Barbara. They provide expert services to ensure that the ADU permit process is completed smoothly, guiding homeowners through the necessary steps and ensuring compliance with local regulations.

4) Revere Construction

Revere Construction specializes in garage ADU conversions and affordable ADU construction throughout the Bay Area. They are well-versed in obtaining ADU permits in San Diego and providing professional guidance throughout the process. Revere Construction ensures that your project adheres to California’s stringent accessory dwelling unit regulations.

5) San Diego ADU Builders

San Diego ADU Builders is known for providing high-quality construction and assistance in securing all necessary ADU permits. Whether you’re building a backyard ADU or a custom ADU in Santa Barbara, their team ensures a smooth and compliant permitting process.

6) California Construction Center

California Construction Center is a top choice for homeowners seeking garage ADU conversions in California. They help homeowners navigate the complexities of obtaining an ADU permit in California, offering a thorough understanding of what’s needed for approval.

7) Blue Jay Construction

Blue Jay Construction is another trusted California ADU contractor specializing in backyard ADUs and custom ADUs. They are experienced in acquiring the proper ADU permits in San Diego and Southern California and are committed to delivering quality, on-time projects.

8) Nook Builders

Nook Builders focuses on offering affordable ADU options for San Diego residents. They have a proven track record of helping clients obtain ADU permits for small-scale garage conversions and backyard ADUs. Their fast, reliable service makes them a great choice for homeowners on a tight timeline.

9) Garrison ADU

Garrison ADU specializes in both backyard ADUs and garage ADU conversions in California. With a deep understanding of local building codes and zoning regulations, they ensure that every project is fully compliant with all necessary ADU permits.

10) UBuildIt

UBuildIt is a reputable name in the ADU construction field. With their expertise, they guide clients through every aspect of the ADU permit process, ensuring that every project meets the highest standards. From garage conversions to larger backyard homes, UBuildIt ensures your ADU project is legally compliant and completed with precision., ensuring that every project meets the highest standards. From garage conversions to larger backyard homes, UBuildIt ensures your ADU project is legally compliant and completed with precision. to larger backyard homes, UBuildIt ensures your ADU project is legally compliant and completed with precision.

The ADU Permit Process in San Diego

1. Check Property Zoning and Eligibility

Confirm your property is in a residential zone that allows ADUs under San Diego zoning regulations. Single-family and multifamily lots may qualify depending on lot size and location.

2. Choose the Type of ADU You Want to Build

Decide between a Detached ADU, Attached ADU, Garage Conversion, or Junior ADU (JADU). Each has specific ADU design and permit requirements in San Diego.

3. Prepare ADU Plans and Required Documents

Create detailed site plans, floor layouts, and Title 24 energy forms. Using pre-approved ADU plans can speed up the approval process with the city.

4. Submit Your Application Online

Apply for your ADU permit through the San Diego Development Services Department (DSD) portal. Upload your plans and pay the necessary review fees.

5. Respond to Plan Reviews and Get Permit Approval

Address any plan check comments from city officials. Once approved, your ADU building permit is issued, allowing construction to begin.

6. Complete Construction and Final Inspection

Build your Accessory Dwelling Unit with a licensed contractor. After passing inspections, you'll receive a Certificate of Occupancy for legal use. with a licensed contractor. After passing inspections, you'll receive a Certificate of Occupancy for legal use.

Cost of Obtaining an ADU Permit in San Diego

Fee TypeEstimated CostNotes
 Plan Check Fees $800 – $2,500Waived through January 2024; varies based on ADU size and complexity.
Building Permit Fees $2,500 – $5,000+Required for construction approval; higher for larger or detached units.
Impact Fees $2,000 – $15,000+Typically waived for ADUs under 750 sq ft; may apply to larger units.
 Utility Connection Fees$2,000 – $15,000Includes water, sewer, and electrical connections; higher for detached ADUs.
Survey Fees $2,500+ Necessary for property boundary verification and compliance.
 School Fees $2,000 – $5,000 Applicable to ADUs over 500 sq ft; calculated per square foot.
 Sewer/Water Capacity Fees $3,600 For ADUs; 50% discount from standard rate.
Storm Water Inspections $1,010.70 For high-priority projects; up to four inspections.

FAQ

What is an ADU and why do I need a permit in San Diego?

An Accessory Dwelling Unit (ADU) is a secondary housing unit on a residential lot. A permit is legally required in San Diego to ensure your ADU meets local zoning laws, building codes, and safety regulations.

What types of ADUs can I build in San Diego?

San Diego allows Detached ADUs, Attached ADUs, Garage Conversions, and Junior ADUs (JADUs). Each type has its own design and permitting requirements based on size, location, and use.

How long does the ADU permitting process take in San Diego?

If your plans are complete and follow the city’s guidelines, permits can be issued in as little as 30–60 days. Using pre-approved ADU plans can speed up the process significantly.

How much does it cost to get an ADU permit in San Diego?

Permit costs typically range from $5,000 to $15,000, depending on ADU type and size. This includes plan check fees, utility connection fees, and school fees. ADUs under 750 sq. ft. often qualify for fee waivers.

Can I use pre-approved ADU plans in San Diego?

Yes! The City of San Diego accepts pre-approved ADU designs, which can reduce permit review time and lower design costs. You must still ensure the plans match your property’s unique conditions.

Are there parking requirements for ADUs in San Diego?

In most cases, no additional parking is required if the ADU is located within a Transit Priority Area (TPA) or replaces a garage or carport. Outside TPAs, minimal parking requirements may apply.

Do I need a Coastal Development Permit for my ADU?

If your property is in the Coastal Overlay Zone, you may need a Coastal Development Permit (CDP) in addition to the ADU permit. This adds extra review steps but is manageable with the right guidance.

Can I rent out my ADU in San Diego?

Yes, you can legally rent out your ADU, including for long-term rental. However, short-term rentals (under 30 days) may be restricted depending on your location and property type.