Adopted edition
IRC 2021
Local amendments override state floor.
TN · County
Washington County, TN.
Washington is in TN (IECC zone 3A, design wind 90 mph).
Design wind speed
90 mph
ASCE 7 Risk Cat II, 3-second gust at 33 ft. Drives fastener spacing, hold-downs, and opening protection.
Climate zone (IECC)
3A
Drives R-value, fenestration U-factor, and air-leakage envelope rules.
Special zones
- HVHZ
- WBDR
- WUI
- FEMA SFHA possible
Permit office
Washington County Building Department
NULLCommon amendments + overlays
What's specific to this county.
- §01 County has local amendments to the state floor — consult the building department.
City directory
1 city indexed in Washington County.
Each city page lists the local amendments (if any), parent county, and the local permit office.
Working in Washington County?
Pull an address-level code packet for any property in Washington County. SkyCanvass resolves the parcel, looks up the adopted edition + the Washington County-specific amendments listed above, and emits a cited packet ready for permit submittal.
See the Tennessee state overview for the broader context, or browse the state directory.
Pull a Washington County code packet.
Free to start — property lookups, state code access, the hail map, and your first storm report on us. No credit card required to look up an address.