Adopted edition
Coverage in progress
Inherits from IA state floor.
IA · County
Jefferson County, IA.
Jefferson County is in IA (IECC zone 5A, 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)
5A
Drives R-value, fenestration U-factor, and air-leakage envelope rules.
Special zones
- HVHZ
- WBDR
- WUI
- FEMA SFHA possible
Permit office
Jefferson County County Building Department
Local conditions
- County seat: Fairfield
Working in Jefferson County?
Pull an address-level code packet for any property in Jefferson County. SkyCanvass resolves the parcel, looks up the adopted edition + the Jefferson County-specific amendments listed above, and emits a cited packet ready for permit submittal.
See the Iowa state overview for the broader context, or browse the state directory.
Pull a Jefferson 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.