Mold Removal Cost And Risk In Marshall County, IA

A typical professional mold job in Marshall County runs about $1,250 to $5,050 before rebuild, using the Iowa nonmetro price level. Below are the 13 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Iowa rules.

1958Median year homes were built

78%Homes built before 1980

27%Homes rented, not owned

$134,100Median home value

16,860Housing units

39,971People

Housing figures from Census ACS 2019 to 2023.

Half the homes in Marshall County were built before 1958, and 78 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 27 percent of homes in Marshall County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 50078 has the oldest homes here, a median year of 1938, and ZIP 50120 the newest, 1974.

Typical Prices In Marshall County

JobSizeNational RangeMarshall County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,250 to $5,050
Mold Remediationan attic$2,000 to $7,500$1,700 to $6,300
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 $650

Estimate is the national range times 84.1 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 $5,050, that cap falls short by about $50 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 Marshall County.

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

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

ZIP Code Neighborhoods In Marshall County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
50005Marshall County194775%$129,500
50051Marshall County194491%Not published
50078Ferguson193885%$75,700
50106Marshall County195186%$112,000
50120Marshall County197459%$177,700
50141Marshall County194783%$139,000
50142Le Grand197371%$124,300
50148Marshall County195386%$96,400
50158Marshall County195978%$130,500
50162Marshall County195882%$182,900
50234Marshall County197054%$162,500
50239Marshall County194384%Not published
50247Marshall County195570%$167,200

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.

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Marshall County Area

Marshalltown, IA