Mold Removal Cost And Risk In Warren County, IL

A typical professional mold job in Warren County runs about $1,300 to $5,250 before rebuild, using the Illinois nonmetro price level. Below are the 8 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Illinois rules.

1956Median year homes were built

83%Homes built before 1980

22%Homes rented, not owned

$101,300Median home value

7,598Housing units

16,576People

Housing figures from Census ACS 2019 to 2023.

Half the homes in Warren County were built before 1956, and 83 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 22 percent of homes in Warren County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 61478 has the oldest homes here, a median year of 1938, and ZIP 61435 the newest, 1976.

Typical Prices In Warren County

JobSizeNational RangeWarren County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,300 to $5,250
Mold Remediationan attic$2,000 to $7,500$1,750 to $6,550
Mold Inspection and Testinga visual inspection$200 to $600$150 to $500
Mold Inspection and Testingan inspection with samples$300 to $1,000$250 to $850
Mold Inspection and Testinga clearance test$300 to $800$250 to $700

Estimate is the national range times 87.4 divided by 100, the price level for the nonmetro part of the state, 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 $5,250, that cap falls short by about $250 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 Warren County.

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

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

ZIP Code Neighborhoods In Warren County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
61417Warren County1946100%$78,000
61423Warren County1944100%$122,100
61435Warren County197665%Not published
61447Warren County196086%$96,200
61453Warren County195080%$85,100
61462Warren County195683%$100,900
61473Warren County195386%$97,000
61478Warren County193881%$73,800

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.

Illinois Rules On Mold

Illinois Mold And Insurance Rules

All Illinois Mold And Insurance Rules lines

Illinois Department of Insurance

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Area Map

Warren County Area

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