Mold Removal Cost And Risk In Portage County, WI

A typical professional mold job in Portage County runs about $1,350 to $5,350 before rebuild, using the Wisconsin nonmetro price level. Below are the 11 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Wisconsin rules.

1979Median year homes were built

52%Homes built before 1980

31%Homes rented, not owned

$230,400Median home value

31,496Housing units

70,375People

Housing figures from Census ACS 2019 to 2023.

Half the homes in Portage County were built before 1979, and 52 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 31 percent of homes in Portage County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 54458 has the oldest homes here, a median year of 1938, and ZIP 54467 the newest, 1992.

Typical Prices In Portage County

JobSizeNational RangePortage County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,350 to $5,350
Mold Remediationan attic$2,000 to $7,500$1,800 to $6,700
Mold Inspection and Testinga visual inspection$200 to $600$200 to $550
Mold Inspection and Testingan inspection with samples$300 to $1,000$250 to $900
Mold Inspection and Testinga clearance test$300 to $800$250 to $700

Estimate is the national range times 89.6 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 $5,350, that cap falls short by about $350 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 Portage County.

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

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

ZIP Code Neighborhoods In Portage County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
54406Portage County197659%$267,300
54407Portage County198149%$306,500
54423Portage County199134%$290,700
54443Portage County198148%$258,800
54458Nelsonville193878%$139,600
54467Portage County199231%$244,400
54473Portage County197364%$229,400
54481Portage County196967%$191,700
54482Portage County199134%$265,800
54909Portage County197853%$187,500
54921Portage County197856%$190,700

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.

Wisconsin Rules On Mold

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Portage County Area

Stevens Point-Plover, WI