Backyard guest house ADU construction
Backyard guest house ADU construction
Cali Dream Construction

Garage Conversion ADU in San Diego: Cost & Permit Guide

Updated February 07, 2026 | Category: ADU | San Diego, CA

Garage Conversion ADU in San Diego: Cost & Permit Guide

Are you a San Diego homeowner looking to create additional living space or generate rental income? A garage conversion ADU (Accessory Dwelling Unit) may be the perfect solution. By converting your existing garage into a separate living unit, you can increase your property's value, enhance your lifestyle, and take advantage of San Diego's favorable ADU regulations. In this comprehensive guide, we'll explore the costs, permits, and practical considerations involved in a garage conversion ADU project in San Diego. Our team serves homeowners throughout Imperial Beach and greater San Diego County.

Benefits of Garage Conversion ADU in San Diego

San Diego's mild climate, beautiful beaches, and thriving economy make it an attractive place to live, work, and invest. A garage conversion ADU can help you:

San Diego ADU Cost: What to Expect

The cost of a garage conversion ADU in San Diego can vary widely, depending on factors such as the size of the garage, the complexity of the design, and the materials used. On average, you can expect to pay between $50,000 and $150,000 or more for a garage conversion ADU project. Here are some estimated costs for different components of the project:

Component Estimated Cost
Design and planning $5,000 - $15,000
Permitting and inspections $2,000 - $5,000
Demolition and preparation $3,000 - $6,000
Framing, electrical, and plumbing $10,000 - $25,000
Insulation, drywall, and finishing $8,000 - $18,000
Windows, doors, and exterior finishes $5,000 - $12,000
Total $50,000 - $150,000+

Permitting and Regulatory Considerations

Before starting your garage conversion ADU project, you'll need to obtain the necessary permits from the City of San Diego. The permitting process typically involves:

It's essential to work with a qualified contractor or designer who is familiar with San Diego's ADU regulations and permitting process. They can help you navigate the system and ensure that your project meets all necessary requirements.

Timeline and Project Phases

A garage conversion ADU project in San Diego can take several months to complete, depending on the complexity of the design and the availability of materials and labor. Here are the typical project phases and estimated timelines:

Overall, you can expect a garage conversion ADU project to take around 6-12 months to complete, from initial design to final occupancy.

Neighborhood Considerations and Local Codes

San Diego has a diverse range of neighborhoods, each with its own unique character and regulations. When planning your garage conversion ADU project, it's essential to consider local codes, zoning restrictions, and neighborhood covenants. For example:

Working with a qualified contractor or designer who is familiar with local codes and regulations can help you navigate these complexities and ensure that your project meets all necessary requirements.

Frequently Asked Questions

Here are some common questions and answers about garage conversion ADU projects in San Diego:

Conclusion and Next Steps

A garage conversion ADU can be a fantastic way to enhance your lifestyle, increase your property's value, and generate rental income in San Diego. By understanding the costs, permits, and practical considerations involved, you can make informed decisions and ensure a successful project. If you're considering a garage conversion ADU project, we recommend consulting with a qualified contractor or designer who is familiar with San Diego's ADU regulations and permitting process.

At Cali Dream Construction (License #1054602), we specialize in garage conversion ADU projects and have extensive experience working with San Diego homeowners. Our team of experts can help you navigate the entire process, from initial design to final occupancy. Call us today at (858) 434-7166 to schedule a consultation and take the first step towards creating your dream ADU!

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Get a free estimate from Cali Dream Construction - San Diego's trusted remodeling contractor.

Call (858) 434-7166 | License #1054602

Ready to Start Your Project?

Get a FREE estimate from San Diego's trusted contractors. No obligation, no pressure.

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Serving all of San Diego County