Apex, NC Accessory Structures: ADU Owner Occupancy (2026)
Key Facts
- Apartments per lot
- One accessory apartment per home
- Ownership rule
- Must share owner with main house
- Exception districts
- 8 mixed-use/planned districts allow separate ownership
- Detached size cap
- 40% of home's heated square footage
Summary
In Apex's residential districts, an accessory apartment (Apex's term for an ADU) must stay under the same ownership as the principal single-family home: it can't be sold or conveyed separately, per the Town's Unified Development Ordinance.
The accessory apartment in the residential districts shall remain accessory to and under the same ownership as the principal single family dwelling unit. The accessory units in the B1 Neighborhood Business District, B2 Downtown Business District, B3 Transitional Business District, MEC-CZ Major Employment District, PUD-CZ Planned Unit Development District, SD-CZ Sustainable Development District, MORR Mixed Office-Residential-Retail District, and TND-CZ Traditional Neighborhood District may be under separate ownership.
Official source re-checked September 7, 2026: the cited page had not changed since it was quoted.
Full Breakdown
Apex's Unified Development Ordinance treats an accessory apartment as a secondary dwelling unit added to, or built alongside, a single-family home, capped at one per lot. Under UDO Sec. 4.5.6, once built in a residential district the accessory apartment must remain accessory to and under the same ownership as the principal dwelling: an owner can't sell or convey it to a separate party. That common-ownership requirement lifts only in specific commercial and planned districts (B1, B2, B3, MEC-CZ, PUD-CZ, SD-CZ, MORR, and TND-CZ), where accessory units may be separately owned. The rule reaches both Apex's corporate limits and its mapped extraterritorial jurisdiction; outside both, Wake County zoning governs instead.
Violations & Fines
Violations of the UDO carry a $100 civil penalty per infraction (accruing daily if uncorrected), plus permit revocation, denial of future permits, and injunctive relief under UDO Sec. 11.4: it is not a criminal offense.
Frequently Asked Questions
Can I sell an Apex accessory apartment separately from the main house?
How many accessory apartments can a single-family lot have in Apex?
Sources & Official References
Other rules in Apex
Compare Apex to another location·View the North Carolina accessory structures overview
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