Accessory dwelling units, or ADUs, have become one of the most popular ways for homeowners to add space, flexibility, and income potential to their property. Whether you're considering one for aging parents, adult children, or a rental unit, here's what you need to know before you start building.
What Is an ADU?
An ADU is a smaller, independent living space located on the same property as a primary residence. It typically includes its own kitchen, bathroom, and entrance, and can take the form of a detached backyard cottage, an attached addition, or a converted garage.
Why Homeowners Are Building ADUs
ADUs offer flexibility that few other home projects can match. They can generate rental income, provide a private space for extended family, or serve as a home office. They also tend to add significant value to a property, making them a popular long-term investment.
Understand Local Regulations Early
ADU rules vary widely depending on your city and state, covering everything from maximum square footage to parking requirements to owner-occupancy rules. Researching local zoning and permitting requirements early in the process can save you significant time and prevent costly design changes later.
Detached vs. Attached vs. Garage Conversion
Detached ADUs offer the most privacy and flexibility but typically cost more to build due to new foundation and utility work. Attached ADUs can be more cost-effective by sharing walls and systems with the main house, while garage conversions are often the most budget-friendly option if the structure is already sound.
Plan for Utilities and Site Access
Running new electrical, water, and sewer lines to a detached ADU can be one of the more significant costs of the project. It's also worth thinking early about site access for construction equipment and how the new unit will connect to existing driveways and walkways.
If you're considering an ADU for your property, the Sauls Hauls team can help you navigate the process from planning through construction.
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