Adopted edition
IRC 2021
City has its own adoption — separate from county.
MD · City
Gaithersburg, MD.
Gaithersburg, MD — building code: IRC 2021.
Design wind speed
90 mph
ASCE 7 Risk Cat II, 3-second gust at 33 ft.
Climate zone (IECC)
4A
Drives R-value, fenestration U-factor, and air-leakage envelope rules.
Special zones
- HVHZ
- WBDR
- WUI
- FEMA SFHA possible
Permit office
Gaithersburg Building Department
www.gaithersburgmd.gov/services/permitting-inspectionsZIP coverage
9 ZIP codes inside Gaithersburg.
Each ZIP resolves to the correct city + county + state on every parcel lookup. Multi-jurisdiction parcels pick up amendments from each layer.
20877 20878 20879 20882 20883 20884 20885 20898 20899
Working in Gaithersburg?
Pull an address-level code packet for any parcel in Gaithersburg. SkyCanvass resolves the address, looks up the Gaithersburg-specific amendments and the Montgomery county and Maryland state floor, then emits a cited packet ready for permit submittal.
See the Montgomery county overview, or the Maryland state directory .
Pull a Gaithersburg 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.