O'Fallon, MO
Building Division
How permitting works in Missouri
Cities are the dominant permitting authorities in Missouri. Because most counties have limited permitting power, the city role is essential for ensuring that urban construction is regulated, with cities typically adopting the International Code Council (ICC) standards by local ordinance.
Limited to specific County classes; Cities dominant.
Contact Information
- Phone
- (636) 379-5660
- Office Hours
- Monday – Friday: 8:30 a.m. – 4:30 p.m.
- Website
- https://www.ofallonmo.gov/
- Permit Portal
- https://www.ofallon.mo.us/building-permits
Not sure what a term on their forms means? See the Building Permit Glossary.
Nearby jurisdictions in Missouri
Lake St. Louis, MO4 mi
Likely permitted by St. Charles County, MO
Josephville, MO5 mi
Likely permitted by St. Charles County, MO
Weldon Spring Heights, MO6 mi
Likely permitted by St. Charles County, MO
Old Monroe, MO10 mi
Likely permitted by Lincoln County, MO