St. Louis Bathroom Remodel Permits 2026
St. Louis bathroom remodel permit fees, plan review, and required inspections for 2026.
St. Louis Bathroom Remodel permit basics
- Building department: City of St. Louis Building Division (Department of Public Safety)
- Department URL: https://www.stlouis-mo.gov/government/departments/public-safety/building/index.cfm
- Permit fee typical: $150 - $900 permit fee
- Plan review + approval: 7-15 business days for residential plan review
- Inspections required: 3-5 inspections (rough plumbing, rough electrical, framing, final)
St. Louis Bathroom Remodel common issues
Ventilation requirements (50 CFM minimum), GFCI placement, waterproofing in showers (tile + grout no longer accepted as waterproof).
St. Louis-specific permitting context
St. Louis is an independent city, legally separate from surrounding St. Louis County, so its Building Division permits and licenses apply only within city limits and differ from county jurisdictions next door. The city requires licensed master trades and contractor business licenses, and its position near the New Madrid seismic zone means Missouri code carries seismic detailing provisions.
Climate factors: Continental climate with hot humid summers, freeze-thaw winters, tornado and severe-storm exposure, and proximity to the New Madrid seismic zone.
Missouri licensing for Bathroom Remodel contractors
No statewide GC license; municipal (KC, St. Louis, Springfield) require local license - no statewide license, but St. Louis likely requires local registration.
Mechanics lien deadline in Missouri: 6 months from last work (4 months for laborers). Preliminary notice: 10-day notice of intent to file lien required.
St. Louis Bathroom Remodel sales tax
Missouri sales tax: 4.225% + local (~8.4% combined avg). Real property labor exempt. Contractor pays sales tax on materials at purchase.
Verify with the Missouri Department of Revenue.
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