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The popularity of Accessory Dwelling Units (ADU) is increasing across California, especially in cities such as San Diego where there is a high demand for housing.
Whether you want the perfect ADU kitchen or are deciding between a pool house and an ADU, knowing the differences can help you make smart choices.
Along the way, we’ll also highlight the latest ADU laws and smart design choices to help you plan better.
From the design point of view, an auxiliary housing unit (ADU) is a secondary living space that is built on the same plot as an existing house. It is sometimes called a granny flat, casetta or in-law suite.
But the big question is: Is it cheaper to add anything else to your home, or to make Adu? And what is its real cost in California? Let's understand this.
Adu is changing thinking about the value, income and flexibility of housing of the property of the owners of the house. But are they worth investing? Let us consider it step by step.
Let's analyze the most common questions asked by the owners of the household about Adu.
In this 2025 guide, we will answer the most common ADU questions: what adu means, why some people oppose them, the difference between home and Adu, Permit Rules in California and how to start the Adu process.
This guide answers everything — from ADU vs DADU, permits, garage conversions, to whether you can legally sell or rent your ADU in California.
This guide answers all these questions with clear examples, 2025 updates and expert insights.
