Land Development Services

CONTACT INFORMATION: Monday through Thursday, 8 a.m. - 4 p.m. and Friday, 9:15 a.m. - 4 p.m. Please note that visitors may not be added to in-person queues past 3:45 p.m.
703-222-0801 TTY 711
12055 Government Center Pkwy
Fairfax, VA 22035
Bill Hicks

Codes and Standards



Building Codes

Fairfax County is required to enforce the Virginia Uniform Statewide Building Code (USBC) and the Statewide Fire Prevention Code (SFPC). Both codes are administered by the Virginia Department of Housing and Community Development and reference the 2018 International Codes as published by the International Code Council.  Learn more about the USBC, referenced codes and their adoption dates since 1973.

Statewide Codes

Beginning July 1, 2022, all Fairfax County applications and plans must meet the 2018 Virginia Uniform Statewide Building Code (USBC) requirements.

Technical Bulletins

County Code

Fire Code

The Fairfax County Fire Marshal is authorized to act on behalf of the Fairfax County Building Official regarding enforcement of the Virginia Uniform Statewide Building Code (USBC), providing primary USBC enforcement in the area of fire protection systems.

Local Design Load Criteria

Type Criteria
Ground snow load 25 psf 1.25 kN/m2
Ultimate Wind Speed (Vult):    

Risk Category I
Risk Category II and Residential
Risk Category III

105 mph
115 mph
120 mph

47 m/s
51 m/s
54 m/s

Frost depth
24 in.
600 mm
Earthquake spectral response acceleration
For site-specific designer may obtain information from:
at short periods: 0.129
at 1 second period: 0.053
Residential Seismic Design Category A
Weathering probability for concrete severe
Termite infestation probability moderate to heavy
Decay probability slight to moderate
Ice shield underlayment required yes
Flood hazards (date of entry into National Flood Insurance Program) 3/5/1990
Winter Design Temperature 17°F -9°C
Air freezing index <=1500°F <=815°C
Mean annual temperature 50°F 10°C
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