Mold Removal Cost And Risk In Flathead County, MT

A typical professional mold job in Flathead County runs about $1,350 to $5,500 before rebuild, using the Montana nonmetro price level. Below are the 14 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Montana rules.

1989Median year homes were built

37%Homes built before 1980

26%Homes rented, not owned

$467,700Median home value

50,948Housing units

108,445People

Housing figures from Census ACS 2019 to 2023.

Half the homes in Flathead County were built before 1989, and 37 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 26 percent of homes in Flathead County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 59913 has the oldest homes here, a median year of 1977, and ZIP 59925 the newest, 2001.

Typical Prices In Flathead County

JobSizeNational RangeFlathead County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,350 to $5,500
Mold Remediationan attic$2,000 to $7,500$1,850 to $6,850
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 $750

Estimate is the national range times 91.6 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 $5,500, that cap falls short by about $500 at the top of that range. Read the form

Water Hazards FEMA Rates Here

FEMA rates Flathead County high for cold wave, 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 Moderate
Coastal floodingNot Applicable
HurricaneNot Applicable
Cold waveRelatively High
Winter weatherRelatively High

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

ZIP Code Neighborhoods In Flathead County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
59901Flathead County198841%$417,200
59912Flathead County198935%$438,000
59913Flathead County197759%$533,000
59916Flathead County199324%$360,500
59919Hungry Horse198831%Not published
59920Flathead County199335%$668,600
59922Flathead County199435%$549,100
59925Flathead County200124%$366,300
59926Flathead County198050%Not published
59927Flathead County198342%$528,200
59928Flathead County199922%Not published
59932Flathead County198546%$617,500
59936Flathead County197952%$562,500
59937Flathead County199034%$654,800

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.

Montana Rules On Mold

Montana Mold And Insurance Rules

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Flathead County Area

Kalispell, MT