Mold Removal Cost And Risk In St. Louis city, MO

A typical professional mold job in St. Louis city runs about $1,450 to $5,700 before rebuild, using the St. Louis, MO-IL price level. Below are the 18 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Missouri rules.

1938Median year homes were built

86%Homes built before 1980

55%Homes rented, not owned

$185,100Median home value

173,920Housing units

293,109People

Housing figures from Census ACS 2019 to 2023. Remediation workers here earn a median $32.22 an hour, BLS May 2025 wage survey.

Half the homes in St. Louis city 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 city are rented, 55 percent. A renter's policy covers belongings and liability, while the owner's policy covers the building.

Housing age swings by neighborhood. ZIP 63101 has the oldest homes here, a median year of 1938, and ZIP 63106 the newest, 1983.

Typical Prices In St. Louis city

JobSizeNational RangeSt. Louis city 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 city

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
63101St. Louis193874%$228,300
63102St. Louis196771%$179,100
63103St. Louis194983%$205,400
63104St. Louis193878%$249,500
63106St. Louis198345%$186,700
63107St. Louis193889%$57,100
63108St. Louis193870%$337,300
63109St. Louis193897%$244,900
63110St. Louis193873%$314,600
63111St. Louis193894%$115,500
63112St. Louis193876%$216,400
63113St. Louis193890%$75,600
63115St. Louis193891%$61,600
63116St. Louis193895%$161,100
63118St. Louis193894%$210,900
63120St. Louis194390%$52,300
63139St. Louis193892%$199,400
63147St. Louis194990%$70,300

ZIP areas are Census ZIP Code Tabulation Areas, placed in the county that holds most of their land, per the Census 2020 ZIP relationship files.

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St. Louis, MO-IL