Mold Removal Companies in St. Louis, Missouri
Mold removal companies in St. Louis range from IICRC-certified professionals with independent clearance testing to operators without verified credentials. The mold removal industry has a documented history of consumer complaints — this directory helps you tell them apart.
Why You Need Two Companies, Not One
The biggest mistake St. Louis homeowners make when dealing with mold isn't hiring a bad contractor. It's hiring one company to do everything. The company removing your mold has a financial interest in finding as much mold as possible — if that same company does your testing, there's no independent check on their work.
The industry standard (IICRC S520) requires the removal company and the verification inspector to be separate. The final step of any legitimate mold removal job is a clearance test by an independent inspector — confirming the mold is gone and your home is safe. This directory lists contractors and inspectors separately for exactly this reason.
Mold Removal Contractors in St. Louis
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Gallagher Bros Construction
500 S County Center Way, St. Louis, MO 63129
+1 314-646-8015All St. Louis Mold Removal Contractors
Helitech Waterproofing & Foundation Repair
8251 Bunkum Rd, Caseyville, IL 62232
+1 618-235-5595New York Computer Help - Midtown
53 E 34th St floor 3, New York, NY 10016
+1 212-599-0339SERVPRO of St. Charles City
460 St Peters Howell Rd, St Charles, MO 63304
+1 636-926-0033Rainbow Restoration of St. Louis
5711 N Illinois St, Fairview Heights, IL 62208
+1 618-476-5505St. John Environmental Consulting, LLC
5515 Grace Ave, St. Louis, MO 63116
+1 314-853-4668Paul Davis Restoration of Metro West St.Louis
1129 N Warson Rd, St. Louis, MO 63132
+1 314-408-6620PuroClean Emergency Restoration Services
1934 N 81st St, Caseyville, IL 62232
+1 618-206-7055Sansara 24/7 Restoration & Remodeling
17384 Manchester Rd, Wildwood, MO 63038
+1 636-812-3838SERVPRO of Affton/Webster Groves
3924 Shrewsbury Ave, St. Louis, MO 63119
+1 314-944-0721Voda Cleaning & Restoration of St. Louis
11252 Midland Blvd, St. Louis, MO 63114
+1 314-988-2622True North Restoration of Greater St. Louis West
634 Trade Center Blvd Suite B, Chesterfield, MO 63005
+1 314-557-3970Restoration 1 of St. Charles
2722 S St Peters Pkwy #1, St Peters, MO 63303
+1 636-355-8903Dalmation Cleaning and Restoration Services
13574 NW Industrial Dr, Bridgeton, MO 63044
+1 314-423-0101Restoration 1 of Greater St. Louis
902 Saint Louis Avenue, Valley Park, MO 63088
St. Louis Cleaning and Restoration
10550 Kahlmeyer Dr, St. Louis, MO 63132
+1 314-439-1665Fresh Air Duct Cleaning of St Louis
701 Market St #427, St. Louis, MO 63101
+1 314-325-7832SERVPRO of St. Louis Central and SERVPRO of Bridgeton / Florissant
2118 59th St, St. Louis, MO 63110
+1 314-669-5693Fast Water Damage Restoration
8651 Old Hwy N Ste 124, Lake St Louis, MO 63367
+1 636-681-3200ABC Environmental Contracting Services
18167 Edison Ave Suite I & J, Chesterfield, MO 63005
+1 314-668-1509Restoration 1 of Central St. Louis
3441 Morgan Ford Rd, St. Louis, MO 63116
+1 314-926-1874Anchor Restoration
17209 Chesterfield Airport Rd Ste 185, Chesterfield, MO 63005
+1 636-579-1072Advanced Environmental Services Inc
3100 Gravois Ave, St. Louis, MO 63118
+1 314-865-2662Woodard Cleaning and Restoration Headquarters
9490 Watson Rd, St. Louis, MO 63126
+1 314-626-8606Rocket Roofing & Restoration Contractors
3221 Woodson Rd, St. Louis, MO 63114
+1 314-948-3487Claro - Complete Mold Remediation - St. Louis
8821 Manchester Rd Suite 101, St. Louis, MO 63144
+1 314-916-6533Water damage restoration service
635 W Port Plaza Dr, St. Louis, MO 63146
+1 314-271-1769Century Restoration and Construction
1735 Larkin Williams Rd, Fenton, MO 63026
+1 314-614-4822St Louis Mold Remediation Solutions
1232 Washington Ave, St. Louis, MO 63103
+1 636-238-7873AWA Environmental - Saint Louis Mold Inspectors
3361 Sublette Ave, St. Louis, MO 63139
+1 314-370-8947Spaulding Decon - Hoarding & Biohazard Cleanup St. Louis
101 W Vandalia St Suite 125, Edwardsville, IL 62025
+1 618-272-2281St Peters Mold Removal Solutions
581 Mid Rivers Mall Dr, St Peters, MO 63376
+1 636-238-7902Innovative Cleaning & Restoration LLC
1392 Farmview Ave, St. Louis, MO 63138
+1 314-300-9610Prism Specialties of Greater St. Louis
2416 Centerline Industrial Dr, Maryland Heights, MO 63043
+1 314-983-9988Superior Waterproofing & Restoration
3001 Washington Ave, St. Louis, MO 63103
+1 314-531-6100Expert Mold Removal - Florissant, MO
1281 Graham Rd #305, Florissant, MO 63031
+1 417-479-0840Disaster Emergency Services, LLC (Water Restoration)
3345 Lemp Ave, St. Louis, MO 63118
+1 314-408-30445 Red Flags When Hiring a Mold Removal Company in St. Louis
They offer free testing.
Legitimate mold inspectors charge for their services — typically $200–$600. A "free inspection" means the company is betting on finding enough mold to sell you a remediation job. That incentive structure doesn't produce honest assessments.
They want to do both the testing and the removal.
If one company wants to assess the problem, remove the mold, and confirm the work is done, you have no independent verification of anything. The conflict of interest is structural, not personal. Require separate companies.
They diagnosed "black mold" without a lab test.
No one can identify mold species by looking at it. A contractor who tells you on the spot that you have toxic black mold is either guessing or pitching. Either way, walk away.
They want full payment before work starts.
Standard industry payment structure: 25% when work begins, 25% at midpoint, 50% after completion and a passing clearance test. Full payment upfront is one of the oldest contractor scams in any trade.
They can't give you a written, itemized estimate.
If a contractor can't tell you in writing exactly what they'll contain, remove, and charge — they can't be held accountable for delivering it. Verbal quotes are not contracts.
What Mold Removal Costs in St. Louis
| Location | Typical range |
|---|---|
| Bathroom | $500 – $1,500 |
| Crawl space | $500 – $2,000 |
| Basement | $1,000 – $4,000 |
| Attic | $1,000 – $4,000 |
| HVAC system | $2,000 – $8,000 |
| Whole house (severe) | $10,000 – $30,000+ |
Per square foot: $10–$25 for most jobs. National average: $2,300–$2,400.
Is your quote too high?
Get at least three written estimates before you commit. A legitimate company will itemize their quote — square footage of containment, materials to be removed, equipment, and timeline. A quote delivered under pressure to sign immediately is a red flag regardless of price.
What's not included in most quotes:
The independent clearance test (budget $150–$400 separately), structural repairs after material removal, and treatment of the moisture source itself. Ask every contractor: does your quote include moisture source identification, or just mold removal?
Estimate Your Mold Removal Cost
Get a realistic cost range before you call a single contractor.
Tell us about your mold problem
Adding square footage improves estimate accuracy.
Does Insurance Cover Mold Removal in Missouri?
Short answer: usually not. Standard homeowners insurance policies cover mold only when it results from a sudden, accidental covered event — a burst pipe, an overflowing appliance, a roof damaged by a named storm.
What insurance almost never covers:
- ×Mold from a slow leak — classified as owner neglect
- ×Mold from flooding — standard policies and FEMA flood insurance both exclude mold
- ×Mold from condensation, poor ventilation, or long-standing moisture
Common Questions About Mold Removal
Is this black mold?▾
There's no way to know by looking at it. Mold color doesn't identify species — you'd need a lab test for that. Don't let a contractor charge you a premium because they called it black mold without a test.
Do I have to leave my house during mold removal?▾
It depends on where the mold is and how much there is. For contained jobs in one area, most families can stay in another part of the house. For larger jobs involving multiple areas or your HVAC system, leaving for the duration is standard.
How do I know the mold was actually removed?▾
The only reliable answer is a clearance test by an independent inspector — someone with no financial connection to the removal company. Any contractor who completes work and doesn't mention a clearance test is leaving you with no way to verify the job.
Will my insurance cover this?▾
Only if mold resulted from a sudden, covered event like a burst pipe or appliance failure. Mold from slow leaks, poor ventilation, or flooding is almost never covered. Even when covered, most policies cap mold coverage at $1,000–$10,000.
How long does mold removal take?▾
Most standard residential jobs take 1–5 days. Add 2–5 business days for clearance test lab results after the job is complete. If you have a real estate closing deadline, get that timeline in writing from both the contractor and the inspector.
Can mold come back after removal?▾
Yes — if the moisture source isn't fixed. Mold is a symptom of a water problem. A legitimate contractor identifies and addresses the moisture source as part of the job.
What's the difference between a mold inspector and a mold removal company?▾
A mold inspector tests your home, identifies the extent of the problem, and writes the scope of work. They do not remove mold. A mold removal company physically removes the mold. The inspector also does the final clearance test. These must always be two separate companies.
Is Mold Removal Licensed in Missouri?
Missouri does not currently require a specific license for mold remediation. This makes the IICRC certification check more important, not less. The independent clearance test is the most reliable safeguard a homeowner has in unregulated markets.
Full Missouri licensing guide →More St. Louis Mold Removal Resources
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Disclaimer: MoldRemovalSource.com is an independent directory. Listings are provided for informational purposes only and do not constitute an endorsement of any contractor or inspector. Credential information is verified at time of listing and may change — always verify current certifications directly before hiring. Full disclaimer →