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San Diego ADU Size, Setback & Height Requirements

If you are planning an accessory dwelling unit in San Diego, one of the first questions is not how to get the permit. It is what can physically be built on your property. ADU size, setbacks, height, existing structures, fire conditions, and lot configuration all affect the building envelope. These development standards are separate from the permit application itself, and …

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ADU Permitting in San Diego County: What Homeowners Need to Know in 2026

Building an accessory dwelling unit can add flexible living space, create room for family, convert an underused garage, or add another residential unit to your property. Before construction begins, however, the project must move through the applicable design, engineering, and permitting process. For homeowners in San Diego County, one of the first steps is determining which jurisdiction controls the property. …

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Garage Conversion to ADU: Ideas, Inspiration, and What to Consider

That garage filled with storage boxes, old furniture, and things you have not used in years could potentially become one of the most useful spaces in your home. For many homeowners, converting a garage into an accessory dwelling unit, or ADU, is an appealing way to create additional living space without starting completely from scratch. A garage can become a …