Mold Removal Cost In St. Louis, MO

A typical professional mold job in St. Louis runs about $1,450 to $5,700 before rebuild. St. Louis sits in St. Louis city.

1938Median year homes were built

86%Homes built before 1980

55%Homes rented, not owned

$185,100Median home value

173,920Housing units

293,109People

Figures for St. Louis city from Census ACS 2019 to 2023.

Half the homes in St. Louis were built before 1938, and 86 percent went up before 1980. Older plumbing, roofs and window seals are where slow leaks start, and slow leaks are the mold most home policies leave out. Most homes in St. Louis are rented, 55 percent. A renter's policy covers belongings and liability, while the owner's policy covers the building.

Typical Prices In St. Louis

JobSizeNational RangeSt. Louis Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,450 to $5,700
Mold Remediationan attic$2,000 to $7,500$1,900 to $7,150
Mold Inspection and Testinga visual inspection$200 to $600$200 to $550
Mold Inspection and Testingan inspection with samples$300 to $1,000$300 to $950
Mold Inspection and Testinga clearance test$300 to $800$300 to $750

Estimate is the national range times 95.1 divided by 100, the price level for St. Louis, MO-IL, rounded to $50. National ranges from Remediational cost guide, price level from BEA Regional Price Parities 2024.

The standard limited fungi endorsement caps mold at $5,000. Against a typical job here of up to $5,700, that cap falls short by about $700 at the top of that range. Read the form

Water Hazards FEMA Rates Here

FEMA rates St. Louis city high for inland flooding. Water from these events is where mold claims start, and flood water is a separate policy. FloodSmart says mold damage is not covered under standard NFIP flood policies. FloodSmart

HazardFEMA Risk Rating
Inland floodingRelatively High
Coastal floodingNot Applicable
HurricaneVery Low
Cold waveRelatively Moderate
Winter weatherRelatively Moderate

Source FEMA National Risk Index, December 2025, county level.

ZIP Code Neighborhoods In St. Louis

ZIPMedian Year BuiltHomes RentedMedian Home Value
63101193870%$228,300
63102196793%$179,100
63103194983%$205,400
63104193852%$249,500
63106198388%$186,700
63107193857%$57,100
63108193873%$337,300
63109193837%$244,900
63110193858%$314,600
63111193860%$115,500
63112193865%$216,400
63113193851%$75,600
63115193857%$61,600
63116193843%$161,100
63118193856%$210,900
63120194355%$52,300
63139193840%$199,400
63147194944%$70,300

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