St. Louis, MO · St. Louis City
Bathroom Remodel in St. Louis, MO: Cost & Permits
What bathroom remodel actually costs in St. Louis, whether you need a permit, which inspections apply, and how long the job takes.
Verified August 2026
Typical local cost
$18,600
$9,100 – $42,300
per bathroom
$9,050 – $42,350
Permit fee
$155 – $610
Modeled allowance
vs national
+1%
local labor & materials
Looking for pricing detail? The full bathroom remodel cost breakdown for St. Louis covers cost by size and material, the local cost model and nearby markets.
Do you need a permit for bathroom remodel in St. Louis, MO?
It depends
It depends on scope. Like-for-like cosmetic work in St. Louis is often exempt, but a permit is required as soon as you change structure, plumbing, electrical or the building envelope.
The city is independent of St. Louis County, so the permitting authority differs on either side of the city line for identical projects.
Cost breakdown in St. Louis
| Low endSimple scope, competitive bid | $9,100 |
|---|---|
| TypicalMost homeowners land here | $18,600 |
| High endComplex access, premium materials | $42,300 |
| per bathroom | $9,050 – $42,350 |
| Permit fee | Estimated allowance $155–$610Modeled from comparable fee schedules — not an official quoted fee. |
| Permit authority | City of St. Louis building departmentModeled estimate |
| Timeline | 3-6 weeks |
Math: national baseline $9,000–$42,000 × St. Louis cost index 1.00. Permit fees use a 1.02 local multiplier. Estimates, not quotes.
What drives your price here
- Tub-to-shower conversion versus like-for-like replacement
- Tile area and material
- Vanity, fixtures and glass enclosure
- Whether plumbing is relocated
- Waterproofing and subfloor repair
Permit process and inspections
| Permit required | It depends |
|---|---|
| Who pulls it | Contractor or owner-builder |
| Inspections | Rough plumbing, Shower pan water test, Final inspection |
| Documents | Permit application, Plumbing scope, Waterproofing details for shower pans |
| Apply | St. Louis permit portal |
Frequently asked questions
Do I need a permit for a bathroom remodel?
Replacing a vanity, toilet or fixtures in the same location is usually permit-exempt. Rebuilding a shower pan, moving drain lines or adding circuits requires a plumbing or building permit and inspection.
Bathroom costs in nearby cities
Sources
Sources & verification
Last verified August 2026. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing — they are not quotes. Permit rules change; confirm with the building department before starting work.
Page data quality: 100/100
- ✓ Verified permit status
- ✓ Official source linked
- ✓ Local cost range
- ✓ Inspection detail
- ✓ Unique local rule
- ✓ Local fee estimate
- ✓ Useful FAQ
- ✓ Relevant calculator
- ✓ Internal links