Mold Removal Cost And Risk In Jefferson County, MO

A typical professional mold job in Jefferson County runs about $1,450 to $5,700 before rebuild, using the St. Louis, MO-IL price level. Below are the 15 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Missouri rules.

1986Median year homes were built

41%Homes built before 1980

19%Homes rented, not owned

$218,800Median home value

93,276Housing units

228,227People

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 Jefferson County were built before 1986, and 41 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. About 19 percent of homes in Jefferson County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 63019 has the oldest homes here, a median year of 1965, and ZIP 63048 the newest, 1998.

Typical Prices In Jefferson County

JobSizeNational RangeJefferson County 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 none of the water hazards below as high for Jefferson County.

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

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

ZIP Code Neighborhoods In Jefferson County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
63010Arnold198247%$214,100
63012Jefferson County198541%$228,500
63016Jefferson County198444%$206,800
63019Crystal City196569%$170,000
63020Jefferson County198050%$172,600
63023Jefferson County198444%$220,200
63026Jefferson County198640%$281,900
63028Jefferson County198743%$221,600
63048Herculaneum199831%$216,300
63049Jefferson County198640%$209,200
63050Jefferson County199233%$255,500
63051Jefferson County198941%$186,300
63052Jefferson County199330%$259,400
63053Kimmswick197368%$217,100
63070Jefferson County199044%$209,200

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.

Cities And Towns

Missouri Rules On Mold

Missouri Mold And Insurance Rules

All Missouri Mold And Insurance Rules lines

All Missouri counties

Guides

Area Map

Jefferson County Area

St. Louis, MO-IL