Mold Removal Cost And Risk In Sioux County, IA

A typical professional mold job in Sioux 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.

1972Median year homes were built

64%Homes built before 1980

22%Homes rented, not owned

$235,600Median home value

13,175Housing units

35,984People

Housing figures from Census ACS 2019 to 2023.

Half the homes in Sioux County were built before 1972, and 64 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 Sioux County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 51036 has the oldest homes here, a median year of 1938, and ZIP 51250 the newest, 1977.

Typical Prices In Sioux County

JobSizeNational RangeSioux 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 Sioux County high for winter weather. 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 Low
Coastal floodingNot Applicable
HurricaneNot Applicable
Cold waveRelatively Low
Winter weatherRelatively High

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

ZIP Code Neighborhoods In Sioux County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
51003Sioux County197069%$226,300
51011Chatsworth195170%Not published
51023Sioux County197076%$148,500
51027Sioux County195775%$219,300
51036Sioux County193883%$242,200
51041Sioux County197461%$253,600
51201Sioux County196568%$182,500
51234Sioux County196680%$208,000
51238Sioux County195783%$176,000
51239Sioux County197359%$231,300
51244Matlock194392%$89,700
51247Sioux County197256%$238,200
51250Sioux County197755%$286,000

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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