Mold Removal Cost And Risk In Grant County, WI

A typical professional mold job in Grant County runs about $1,350 to $5,350 before rebuild, using the Wisconsin nonmetro price level. Below are the 21 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Wisconsin rules.

1973Median year homes were built

62%Homes built before 1980

31%Homes rented, not owned

$186,300Median home value

22,192Housing units

51,678People

Housing figures from Census ACS 2019 to 2023.

Half the homes in Grant County were built before 1973, and 62 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 Grant County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 53810 has the oldest homes here, a median year of 1944, and ZIP 53801 the newest, 1982.

Typical Prices In Grant County

JobSizeNational RangeGrant 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 Grant County.

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

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

ZIP Code Neighborhoods In Grant County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
53554Grant County196970%$165,900
53569Grant County196171%$198,400
53573Grant County197952%$169,100
53801Grant County198248%$128,400
53802Grant County197461%$206,300
53804Grant County197357%$163,600
53805Grant County197558%$147,300
53806Grant County197172%$145,100
53807Grant County197265%$209,900
53808Grant County197369%$183,200
53809Grant County197165%$183,000
53810Grant County194478%$151,900
53811Grant County197853%$219,300
53812Kieler197287%$194,500
53813Grant County196266%$204,900
53816Grant County197951%$207,500
53817Patch Grove197950%$139,800
53818Grant County197462%$214,200
53820Grant County197260%$203,600
53825Grant County196262%$143,800
53827Grant County197853%$150,000

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.

Wisconsin Rules On Mold

Wisconsin Mold And Insurance Rules

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Area Map

Grant County Area

Platteville, WI