Renting
San Diego ADU Rental Income: 2026 Investor Guide
Did you know that a typical 600 square foot detached ADU in San Diego currently generates an average gross rental yield of 9.6%? While that figure is compelling, building an adu for rental income in san diego feels more complex than ever following the 2026 regulatory shifts. You likely feel the pressure of construction costs, which climbed 44% between 2021 and late 2025, and the confusion surrounding the new density caps of four to six units per lot. It's natural to worry that a single mistake in the planning phase could delay your rental timeline or drain your budget before you break ground.
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