Mold Removal Cost And Risk In Humboldt County, IA

A typical professional mold job in Humboldt County runs about $1,250 to $5,050 before rebuild, using the Iowa nonmetro price level. Below are the 10 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Iowa rules.

1958Median year homes were built

80%Homes built before 1980

25%Homes rented, not owned

$146,900Median home value

4,600Housing units

9,573People

Housing figures from Census ACS 2019 to 2023.

Half the homes in Humboldt County were built before 1958, and 80 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 25 percent of homes in Humboldt County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 50520 has the oldest homes here, a median year of 1938, and ZIP 50529 the newest, 1969.

Typical Prices In Humboldt County

JobSizeNational RangeHumboldt 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 Humboldt 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 Humboldt County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
50519Humboldt County195484%$114,400
50520Humboldt County193884%$46,500
50529Dakota City196984%$119,300
50545Humboldt County193883%Not published
50548Humboldt County196475%$177,700
50558Humboldt County195779%$109,700
50570Humboldt County193877%$114,300
50577Humboldt County194987%$100,700
50582Humboldt County193883%$70,000
50591Humboldt County193895%$169,600

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.

Iowa Rules On Mold

Iowa Mold And Insurance Rules

All Iowa Mold And Insurance Rules lines

All Iowa counties

Guides

Area Map

Humboldt County Area

Iowa