Adopted edition
IRC 2021
City has its own adoption — separate from county.
TN · City
Chattanooga, TN.
Chattanooga, TN — building code: IRC 2021.
Design wind speed
90 mph
ASCE 7 Risk Cat II, 3-second gust at 33 ft.
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
Chattanooga Building Department
connect.chattanooga.gov/land-developmentZIP coverage
20 ZIP codes inside Chattanooga.
Each ZIP resolves to the correct city + county + state on every parcel lookup. Multi-jurisdiction parcels pick up amendments from each layer.
37401 37402 37403 37404 37405 37406 37407 37408 37409 37410 37411 37412 37414 37415 37416 37419 37421 37422 37424 37450
Working in Chattanooga?
Pull an address-level code packet for any parcel in Chattanooga. SkyCanvass resolves the address, looks up the Chattanooga-specific amendments and the Hamilton county and Tennessee state floor, then emits a cited packet ready for permit submittal.
See the Hamilton county overview, or the Tennessee state directory .
Pull a Chattanooga 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.