Below are homes that have less than 1200 square feet of covered area. This conforms to the maximum allowed in San Diego County for a DETACHED ADU (auxillary dwelling unit) or 'Granny Flat'.

For attached additional dwelling area, you cannot exceed 50% of existing floor area to a maximum of 1200 square feet.
(San Diego County ADU Information)

Temporary Health Care Trailers are limited to 800 sq. ft. and require a yearly renewal.
(See San Diego County Handout)

Please check with your local jurisdiction for specific requirements for your area.
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