
According to С»ÆÑ¼ÊÓÆµ County Unified Development Ordinance (UDO), an ADU is a secondary dwelling unit that is subordinate to the primary dwelling.
It can either be:
- A part of the primary dwelling (including an addition), or
- Detached, on the same lot as the primary dwelling.
Basic Requirements

An ADU must be able to function as an independent living facility, equipped with a kitchen, provisions for sanitation and sleeping. There must also be at least one off-street parking space in addition to what is required for the primary dwelling.
Other planning and zoning regulations will likely apply since every ADU project is site-specific. The best source for a comprehensive list of requirements is an ADU Ally. We recommend you contact us at 919-856-6335 before you get started.
Guides and Tools
Use the eligibility guide and follow the iMAPS instructions below to determine if your property is eligible for an ADU under С»ÆÑ¼ÊÓÆµ County planning jurisdiction.