Raleigh, NC
Raleigh ADU Permit Fee Calculator (2026)
Instant fee breakdown for Raleigh, North Carolina. Total range: $5,300–$11,700.
Raleigh, North Carolina ADU Permit Fees
Total estimated range: $5,300–$11,700
Plan Check
$500–$1,200
Building Permit
$800–$2,500
Impact Fees
$2,000–$8,000
School Fees
N/A
Utility Hookups
$2,000–$5,000
Source: City permitting schedules and FeeBuilder surveys, updated April 2026.
Raleigh permit process at a glance
Permitting office: Raleigh Development Services Department
Typical plan review: 10-18 weeks
Raleigh's Unified Development Ordinance §2.1.4 permits detached ADUs (called 'accessory dwellings') in most residential zones with no owner-occupancy rule. The wildcard is the city's tree-conservation rules — many lots inside the I-440 Beltline have protected mature canopy oaks that constrain ADU siting and add tree-protection plan costs. Humid summers also drive moisture management in crawlspaces and require Class II vapor retarders on most assemblies.
Sample real-world fee example
Scenario: 700 sq ft detached ADU on a typical Raleigh lot
| Plan check (mid) | $700 |
| Building permit (mid) | $1,100 |
| Utility connection (low end) | $2,000 |
| Misc fees (records, inspections) | $1,500 |
| TOTAL (rough mid example) | ~$4,800 |
Common Raleigh ADU permit mistakes
- Skipping the tree-conservation protection plan when protected oaks are within the disturbance zone.
- Missing the humid-climate Class II vapor retarder requirement in crawlspace and wall assemblies.
- Not budgeting for full school impact fees in Wake County's fee district.
How Raleigh compares nearby
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