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When a permit is required
Permit triggers and exempt work for Florissant
The Building Division issues construction permits and occupancy permits and performs related plan review and inspections for residential and commercial projects. Public guides identify quick-issue permits and plan-review-required permits.
Note: Thin public citywide exemption summary; Florissant instead posts quick-issue permit examples and plan-review-required examples. Confirm before starting work.
- Permit application
- Plans and construction drawings
- Zoning authorization where applicable
- Supporting construction information
- Building code
- 2021 International Residential Code with city modifications; confirm the full current adopted code set directly with Florissant.
- Permit validity
- Occupancy inspection materials indicate some inspections are time-limited; verify permit expiration per permit type.
- Owner-builder
- Not clearly summarized in one public landing page; confirm with Public Works.
- Contractor requirements
- Verify contractor requirements with Public Works before filing; city materials reference contractor prequalification and permit-specific requirements.
Source: City of Florissant Public Works, Building Division ↗
Application process
Typical processing: Not stated as a single posted SLA; review time depends on permit type and whether plan review is required.
- 01 Pull the correct application from the Public Works permit applications page or the online portal.
- 02 Submit plans and permit materials through the portal, by email to publicworks@florissantmo.com, or directly with Public Works.
- 03 Pay applicable fees; Florissant accepts credit and debit cards over the phone and checks by mail.
- 04 Receive permit approval, complete required inspections, and obtain occupancy approval where applicable.
Typical processing time: Not stated as a single posted SLA; review time depends on permit type and whether plan review is required.
Source: City of Florissant Public Works, Building Division ↗
Fee schedule
Florissant building permit fees
Applications may be emailed; card payments can be taken over the phone and checks may be mailed to City Hall.
Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.
Required inspections
Scheduling and sequence
- (314) 839-7648 — Florissant Public Works / Building Division (phone)
- publicworks@florissantmo.com (email)
- Inspection hours
- Monday-Friday, 8:00 a.m. to 5:00 p.m.
Typical sequence: Plan review, permit issuance, trade and building inspections, then occupancy inspection where applicable.
Source: City of Florissant Public Works, Building Division ↗
Frequently asked
Common questions about Florissant permits
01 Do I need a building permit in Florissant, MO? ▸
02 How much does a building permit cost in Florissant, MO? ▸
03 How do I apply for a building permit in Florissant, MO? ▸
04 How long does it take to get a building permit in Florissant, MO? ▸
05 How do I schedule a building inspection in Florissant, MO? ▸
Educational reference. Permit rules and fees change — confirm current requirements directly with City of Florissant Public Works, Building Division before applying. Jaspector is not legal advice.