ADU Permits: Cary vs Raleigh
How do adu permits rules compare between Cary, NC and Raleigh, NC?
Cary and Raleigh have similar restriction levels.
Cary, NC
Wake County
Cary's Land Development Ordinance (LDO) Chapter 4 regulates accessory dwelling units as a permitted accessory use in most residential zoning districts, subject to size and setback standards. Permits are issued by the Cary Inspections and Permits Department. Under NC General Statute 160D-1110, building, electrical, plumbing, and mechanical permits are issued separately. Cary also requires zoning compliance review.
View full Cary rules →Raleigh, NC
Wake County
Raleigh permits accessory dwelling units, sometimes called backyard cottages, under Unified Development Ordinance (UDO) Section 2.5.1 and Section 6.7. Permits are issued ministerially through the Development Services Department for residential districts.
View full Raleigh rules →Key Facts Comparison
| Fact | Cary | Raleigh |
|---|---|---|
| Authority | Cary LDO Ch. 4 + 7 | - |
| Permitting | Cary Inspections and Permits | - |
| Trade Permits | Separate per NCGS 160D-1110 | - |
| State Code | 2018 NC Residential Code | - |
| Zoning Districts | Most residential by right | - |
| Code Section | - | UDO 2.5.1, 6.7 |
| Max Size | - | 800 sq ft |
| Setback | - | 5 ft side and rear |
| Lead Agency | - | Development Services |
| State Preemption | - | None (NC) |
Highlighted rows indicate differences between cities.
Cary FAQ
Where do I apply for an ADU permit in Cary?
Apply through the Cary Inspections and Permits Department via the town's online permitting portal. Zoning review is handled by Cary Planning. Building, electrical, plumbing, and mechanical permits are issued separately under NCGS 160D-1110.
Can I build an ADU on any residential lot in Cary?
Generally yes in single-family residential districts, subject to LDO Chapter 7 setbacks, lot coverage, and accessory-structure size limits. Check your specific zoning district and any HOA covenants before applying.
Raleigh FAQ
Are ADUs allowed in Raleigh?
Yes. Raleigh UDO Section 2.5.1 permits accessory dwelling units by right in most residential districts, with development standards in UDO Section 6.7.
How big can a Raleigh ADU be?
Up to 800 square feet under UDO Section 6.7. Detached ADUs must meet a 5-foot side and rear setback and be located in the side or rear yard.
Where do I file an ADU permit in Raleigh?
With the Raleigh Development Services Department through the Customer Service Center. Plan review verifies UDO compliance at building permit issuance.
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