PROFESSIONAL MOLD TESTING
IN ST. LOUIS
Expert inspection and testing services protecting homes and businesses across the metro area
WHY CHOOSE ST. LOUIS MOLD TESTING
CERTIFIED EXPERTS
Our certified technicians use state-of-the-art equipment to accurately detect and identify mold in your property. We've tested over 500 St. Louis area properties and understand the unique challenges of Missouri's climate and housing stock.
FAST RESULTS
Get your mold test results quickly, usually within 24-48 hours of inspection. We use certified laboratories for accurate analysis and provide detailed reports with clear remediation guidance.
DETAILED REPORTS
Receive comprehensive reports with findings, mold types identified, spore counts, and specific recommendations. Our documentation is suitable for insurance claims, real estate transactions, and remediation planning.
OUR COMPREHENSIVE MOLD & AIR QUALITY SERVICES
Professional testing solutions for every situation - from homeowners to businesses
RESIDENTIAL MOLD TESTING
Comprehensive mold inspection and testing for homeowners. Protect your family's health with professional air quality analysis, moisture detection, and detailed reporting.
- ✓ Visual inspection & air sampling
- ✓ Thermal imaging & moisture mapping
- ✓ Lab analysis & detailed reports
- ✓ 24-48 hour turnaround
COMMERCIAL MOLD TESTING
Enterprise-grade testing for businesses, property managers, and facility owners. Minimize liability, ensure compliance, and protect your property value.
- ✓ Multi-building portfolio testing
- ✓ OSHA & EPA compliance
- ✓ After-hours scheduling available
- ✓ Volume discounts for property managers
HOME BUYER MOLD INSPECTION
Pre-purchase mold testing during your inspection contingency. Protect your investment, leverage for negotiations, and close with confidence.
- ✓ Fast turnaround for closing deadlines
- ✓ Negotiation-ready documentation
- ✓ Lender & insurance accepted reports
- ✓ Same-week scheduling available
AIR QUALITY TESTING
Comprehensive indoor air assessment beyond just mold. Test for VOCs, allergens, particulates, radon, and more. Breathe healthier air at home.
- ✓ Multi-pollutant testing (mold, VOCs, allergens)
- ✓ AIHA-certified laboratory analysis
- ✓ Actionable improvement recommendations
- ✓ Bundle with mold testing & save
ATTIC MOLD INSPECTION
Protect your roof and home structure with professional attic mold testing. Thermal imaging detects ice dams, roof leaks, and hidden moisture.
- ✓ Thermal imaging for hidden moisture
- ✓ Ice dam & roof leak detection
- ✓ Ventilation system assessment
- ✓ Structural integrity evaluation
CRAWL SPACE MOLD TESTING
40-50% of your home's air comes from your crawl space. Protect your foundation and indoor air quality with comprehensive testing.
- ✓ Ground moisture & vapor barrier assessment
- ✓ Floor joist structural inspection
- ✓ Stack Effect air quality analysis
- ✓ Encapsulation recommendations
POST-REMEDIATION VERIFICATION
Independent third-party clearance testing after mold remediation. Verify successful removal before you pay the remediation company.
- ✓ Unbiased third-party verification
- ✓ Visual & air quality clearance
- ✓ Clearance certification for reopening
- ✓ Insurance documentation
Not sure which service you need? We're here to help.
GET FREE CONSULTATIONCOMMON MOLD PROBLEMS IN ST. LOUIS HOMES
St. Louis's humid climate, clay soil, and aging housing stock create perfect conditions for mold growth. Here are the most common issues we find:
MISSOURI HUMIDITY & CLIMATE
The Challenge: St. Louis averages 75% humidity during summer months, with hot, humid conditions creating condensation issues in homes.
Common Issues: Basement moisture during humid months, air conditioning condensation, attic condensation during temperature swings, window condensation in winter.
How We Help: Year-round moisture testing, seasonal prevention strategies, humidity level assessment throughout your property.
CLAY SOIL & FOUNDATION ISSUES
The Challenge: St. Louis's expansive clay soil swells when wet and shrinks when dry, creating foundation movement and poor drainage around homes.
Common Issues: Foundation cracks allowing moisture entry, basement seepage, overwhelmed sump pumps, hydrostatic pressure against basement walls.
How We Help: Foundation moisture mapping, below-grade water intrusion testing, identification of moisture entry points.
HISTORIC HOME CONSTRUCTION
The Challenge: Over 60% of St. Louis homes were built before 1960, featuring outdated waterproofing, aging plumbing, and inadequate ventilation.
Common Issues: Deteriorating galvanized plumbing leaks, failed original basement waterproofing, insufficient bathroom ventilation, old HVAC systems.
How We Help: Non-invasive testing methods safe for historic materials, vintage construction expertise, identification of age-related moisture issues.
BASEMENT & CRAWL SPACE MOISTURE
The Challenge: Most St. Louis homes have basements or crawl spaces that are naturally prone to moisture accumulation due to below-grade construction.
Common Issues: Inadequate dehumidification, sump pit condensation, poor crawl space ventilation, efflorescence on foundation walls.
How We Help: Comprehensive below-grade testing, crawl space air quality sampling, moisture source identification, ventilation assessment.
HVAC SYSTEM CONTAMINATION
The Challenge: St. Louis's humid climate creates condensation in air conditioning systems, and ductwork can harbor and distribute mold spores throughout homes.
Common Issues: Moldy cooling coils, contaminated ductwork, condensate drain line clogs, inadequate fresh air exchange in sealed homes.
How We Help: HVAC-specific air sampling, supply and return vent testing, cooling coil inspection, system moisture assessment.
BATHROOM VENTILATION FAILURES
The Challenge: Inadequate bathroom exhaust ventilation combined with Missouri's humidity creates persistent moisture problems in bathrooms and adjacent spaces.
Common Issues: Bathroom ceiling mold, shower grout contamination, exhaust fans venting into attics, under-sink cabinet moisture.
How We Help: Bathroom moisture testing, ventilation capacity assessment, hidden moisture detection behind tile and fixtures.
WONDERING WHAT MOLD TESTING COSTS?
Get a general price estimate in seconds to help you budget for your inspection.
Instant Estimate
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Not a Binding Quote
This is a general estimate only. Final pricing depends on property condition and access
Get Your Official Quote
Request a quote and we'll contact you within 24 hours to confirm pricing and schedule
CALCULATE YOUR COST
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CONCERNED ABOUT MOLD IN YOUR PROPERTY?
Early detection can save thousands in remediation costs and protect your family's health
PROUDLY SERVING ST. LOUIS
Fast, local mold testing experts serving neighborhoods across the St. Louis metro area
WEBSTER GROVES
Historic homes • Tree canopy challenges • Clay soil drainage
Learn More →CLAYTON
High-rise condos • Historic buildings • Urban landscape
Learn More →THE HILL
Historic brick homes • Italian neighborhood • Dense urban lots
Learn More →CENTRAL WEST END
Historic mansions • Luxury condos • Forest Park area
Learn More →UNIVERSITY CITY
The Loop • Multi-family buildings • Urban tree canopy
Learn More →CREVE COEUR
Lakeside homes • Corporate district • Luxury properties
Learn More →LADUE
Historic estates • Luxury homes • Country clubs
Learn More →CHESTERFIELD
Valley properties • Subdivisions • Growing community
Learn More →SOULARD
Historic rowhouses • Riverfront proximity • Stone foundations
Learn More →BALLWIN
Valley moisture • Suburban homes • West county
Learn More →VIEW ALL LOCATIONS
St. Louis City • St. Louis County • St. Charles • Metro East & More
See Full Coverage →OUR SERVICES
RESIDENTIAL TESTING
Protect your family with thorough home mold inspections. We examine all areas to identify potential growth.
LEARN MORECOMMERCIAL TESTING
Keep your business safe and compliant with professional commercial mold testing and air quality assessment.
LEARN MOREPOST-REMEDIATION VERIFICATION
Independent third-party clearance testing to verify successful mold remediation and ensure safe re-occupancy.
LEARN MOREWHAT ST. LOUIS RESIDENTS SAY
"Fast response to our Clayton condo. They identified hidden mold in the HVAC system we never would have found ourselves. Professional and thorough!"
"Buying a historic home in Webster Groves and wanted peace of mind. They found moisture issues in the basement that would have cost thousands down the road. Their knowledge of older homes was invaluable."
"Needed testing for our University City rental property. Quick service, detailed documentation perfect for landlord records, and helped resolve a tenant concern professionally."
"Our Chesterfield home had a musty smell after flooding. They arrived same-day, tested thoroughly, and gave us a clear plan. Results came back in 24 hours. Highly recommend!"
HOW IT WORKS
Our simple 4-step process makes mold testing easy and stress-free
SCHEDULE
Call or book online. Same-day and next-day appointments available throughout the St. Louis metro area.
INSPECT
Certified technician examines your property, uses specialized equipment to detect moisture, and collects samples for lab analysis.
LAB ANALYSIS
Samples sent to certified laboratory for professional analysis. Tests identify mold types and spore concentrations.
RESULTS & PLAN
Receive detailed report within 24-48 hours with findings, mold identification, and clear remediation recommendations.
FREQUENTLY ASKED QUESTIONS
How much does mold testing cost in St. Louis?
Most residential mold testing in St. Louis ranges from $449-$899 depending on property size and testing scope. We provide free quotes and transparent pricing with no hidden fees. Commercial properties have custom pricing based on square footage.
How long does mold testing take?
The on-site inspection typically takes 1-2 hours depending on property size. Laboratory analysis takes 24-48 hours, and you'll receive a comprehensive report with findings and recommendations.
What areas of St. Louis do you serve?
We serve all of St. Louis City, St. Louis County, St. Charles County, and Metro East Illinois. This includes Clayton, Webster Groves, University City, Chesterfield, Ladue, Kirkwood, and 30+ other communities across the metro area.
Do I need mold testing or mold inspection?
Mold testing includes laboratory analysis of samples to identify mold types and spore counts. Mold inspection is a visual assessment. We typically recommend testing for accurate identification, especially for health concerns, real estate transactions, or remediation planning.
Can I test for mold myself?
While DIY mold test kits exist, they often provide inaccurate results and can't identify hidden mold. Professional testing uses calibrated equipment, proper sampling techniques, and certified laboratory analysis for reliable results you can act on.
What's included in your mold testing service?
Our service includes visual inspection, moisture detection using specialized meters, air quality sampling, surface sampling if needed, laboratory analysis by certified labs, and a comprehensive written report with findings and remediation recommendations.
How quickly can you get to my property?
For most St. Louis metro locations, we can arrive within 30-60 minutes for emergencies. We offer same-day and next-day appointments for scheduled testing. Response time varies by location and current demand.
Do you work with insurance companies?
Yes, we provide detailed documentation suitable for insurance claims. While we don't bill insurance directly, our reports include all necessary information for your claim submission. Check your policy for mold testing coverage.
What should I do if mold is found?
Our report includes specific remediation recommendations. For small areas (under 10 sq ft), you may be able to clean it yourself. Larger areas require professional mold remediation. We provide unbiased guidance and can recommend qualified remediation companies.
Why does St. Louis have so many mold problems?
St. Louis's humid climate (75% average summer humidity), clay soil causing drainage issues, aging housing stock (60%+ built before 1960), and temperature fluctuations create ideal conditions for mold growth. Regular testing helps catch issues early.
CONCERNED ABOUT MOLD IN YOUR PROPERTY?
Don't wait! Early detection can save you thousands in remediation costs and protect your family's health.
SCHEDULE INSPECTION TODAY