Accessory Structures and Additions

Learn more about requirements for one- and two-family additions and accessory structures.

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Before You Start What You'll Need Review Turnaround Time for Development Projects Fees

As a homeowner, you may one day find yourself building an addition or accessory structure to your home.

Accessory structures include but are not limited to:

  • Detached garages and carports
  • Storage sheds and gazebos
  • Greenhouses
  • Pool houses

Additions include but are not limited to:

  • Adding new space to an existing structure
  • Adding to the footprint
  • Adding a second floor
  • Enclosing a garage
  • Attached mother-in-law suites
  • Sunrooms
  • Dormers

Before You Start

What You'll Need

Applications and additional documentation must be submitted via email to 

Required for Submittal

Plans must be drawn to architectural scale and submitted with the permit application. The Addition + Accessory Structures Checklist is a helpful guide for this submittal process. 
Minimum allowable scale: 1/4 inch = 1 foot

Required for Some Projects
  • Wake County Well and Septic permits, if applicable

Note: When the seal of a design professional is required, the seal must include a dated, wet signature of the design professional. 

Review Turnaround Time for Development Projects

Click here for a breakdown of projects and review times.


  • Fees must be paid prior to permit issuance. See Development Fee Schedule for specific fees
  • Payments can be made online via a registered account in the Permit and Development Portal. They can also be paid in-person at either customer service location.



Planning and Development
Customer Service Center

Lead Department:
Planning and Development
Service Categories:
Permits - Residential