Mold removal
Mold Removal in St. Louis, MO
Mold removal means finding the moisture source, containing the affected area, removing contaminated materials, cleaning what can be saved, and confirming the problem is gone. Without fixing the moisture, mold usually comes back.

Mold Removal in St. Louis: local conditions
Partner coverage for mold removal in St. Louis currently includes 46 ZIP codes: 63101, 63102, 63103, 63104, 63105, 63106, 63107, 63108, 63109, 63110, 63111, 63112, 63113, 63114, 63115, 63116, 63117, 63118, 63119, 63120, 63121, 63122, 63123, 63124, 63125, 63126, 63127, 63128, 63129, 63130, 63131, 63132, 63133, 63134, 63135, 63136, 63137, 63138, 63139, 63140, 63141, 63143, 63144, 63146, 63147, 63155. If your ZIP is on this list, a call connects you with a company that serves it.
Brick homes with basements dominate, many with clay sewer laterals and floor drains connected to combined sewers. South City's brick homes and flats from the late 1800s to the 1930s have deep basements, original clay laterals and limestone or brick foundations that seep during heavy rain. Many are owner-occupied two-family flats, so leaks between floors are common.
Licensing in Missouri: Missouri doesn't license general contractors statewide. Cities and counties, including St. Louis and Kansas City, license contractors locally.
What you can expect
- One call connects you with an independent restoration company that serves your ZIP code.
- Fast call-back during business hours
- Serving St. Louis, MO
- Photo and moisture documentation for insurance
Mold Removal at a glance
- Category
- Mold removal
- Emergency service
- Scheduled visit
- Typical first step
- Inspect and find the moisture
- Area
- St. Louis, MO
Other risks in St. Louis
Flash flooding
Record rainfall on July 26, 2022 flooded homes and streets across St. Louis.
Basement sewer backups
Combined sewers in older neighborhoods back up into basements during heavy rain.
River flooding
The Mississippi and Missouri rivers flood low-lying areas, as in the great flood of 1993.
Brick home basements
St. Louis's brick homes almost all have basements with floor drains connected to the sewer, which back up during heavy storms.
Signs you need mold removal
- Visible spots or fuzzy growth on walls, ceilings or wood
- A musty, earthy smell, especially in closets, basements or crawlspaces
- Recent water damage that wasn't fully dried
How the work is done
Inspect and find the moisture, then Contain the area, then Remove and clean, then Dry and fix the source, then Verify. See the full mold removal process.
What affects the cost
Prices depend on the job, so restoration companies in St. Louis quote after an assessment. The main drivers are how much area is affected, how long it stayed wet, and what has to be removed or rebuilt. See the full list of mold removal cost factors.
Mold Removal questions
Is sewer backup covered by insurance in St. Louis?
Usually only with a sewer or water backup endorsement.
Do I need a permit for repairs in St. Louis?
Structural, plumbing and electrical repairs need permits from the City of St. Louis Building Division.
Is bleach enough to kill mold?
Not on porous materials like drywall and wood. Bleach mostly lightens the surface. Porous materials with growth are usually removed, and the moisture source has to be fixed.
Do I need mold testing?
Not always. If mold is visible, the priority is removing it and fixing the moisture. Testing helps when you smell mold but can't find it, or when clearance is required.
Other services in St. Louis
More about water and storm damage in St. Louis, or see mold removal nationwide.
Related services

Mold remediation
Mold remediation removes mold growth under containment so spores don't spread, cleans or discards affected materials, and corrects the moisture problem that let it grow.
Learn more
Mold inspection & testing
A mold inspection looks for visible growth, hidden moisture and the conditions causing it, using moisture meters, thermal imaging and, when useful, air or surface samples.
Learn more
Attic mold removal
Attic mold usually grows on roof decking from condensation, poor ventilation, bathroom fans vented into the attic, or roof and AC leaks.
Learn moreWater, mold or fire damage? Get the right crew on it.
One call connects you with an independent restoration company that serves your ZIP code. Fast call-back during business hours.
