4. Permits and Review

Step 4 of the development review process is obtaining the proper review and permits before construction can start. For all the steps, visit the Development Process Overview.


Fairfax County issues several different types of permits for construction projects: building permits, trade permits and land disturbance permits. Apply for your permit online. 

Drawings, plats, site-related plans and other documentation may be required. See "Review" section below for more details.


In order to determine if your project is in compliance with construction codes, the zoning ordinance and other county or state ordinances, other agency reviews may be necessary, depending on your project. Choose a review type below to learn more.

Permit Application Center

Hours: 8 a.m. — 4 p.m. (M-Th); 9:15 a.m. — 4 p.m. (F)
703-222-0801, TTY 711, or Email

Staff is Available for Assistance

County staff is available by email or via phone at the following numbers:

  • Zoning: Planner of the Day, 703-324-5387/5372, TTY 711
  • Site and Subdivision Plans: Engineer of the Day, 703-324-2268, TTY 711
  • Building Permits: Permit Application Center, 703-222-0801, TTY 711
  • Building Code Questions, 703-631-5101, TTY 711
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