Mold Removal Cost And Risk In Bonneville County, ID

A typical professional mold job in Bonneville County runs about $1,400 to $5,650 before rebuild, using the Idaho Falls, ID price level. Below are the 11 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Idaho rules.

1985Median year homes were built

46%Homes built before 1980

28%Homes rented, not owned

$327,000Median home value

46,425Housing units

127,056People

Housing figures from Census ACS 2019 to 2023.

Half the homes in Bonneville County were built before 1985, and 46 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 28 percent of homes in Bonneville County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 83454 has the oldest homes here, a median year of 1957, and ZIP 83427 the newest, 2003.

Typical Prices In Bonneville County

JobSizeNational RangeBonneville County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,400 to $5,650
Mold Remediationan attic$2,000 to $7,500$1,900 to $7,100
Mold Inspection and Testinga visual inspection$200 to $600$200 to $550
Mold Inspection and Testingan inspection with samples$300 to $1,000$300 to $950
Mold Inspection and Testinga clearance test$300 to $800$300 to $750

Estimate is the national range times 94.4 divided by 100, the price level for Idaho Falls, ID, 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 $5,650, that cap falls short by about $650 at the top of that range. Read the form

Water Hazards FEMA Rates Here

FEMA rates Bonneville County high for cold wave. 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 Moderate

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

ZIP Code Neighborhoods In Bonneville County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
83120Bonneville County196172%$377,300
83285Bonneville County199533%$450,000
83401Bonneville County198546%$307,700
83402Bonneville County197559%$301,400
83404Bonneville County198546%$355,200
83406Bonneville County200223%$350,500
83427Bonneville County200334%$368,400
83428Bonneville County198051%$540,400
83443Bonneville County197168%$154,200
83449Bonneville County198931%$550,600
83454Ucon195788%$306,900

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.

Idaho Rules On Mold

Idaho Mold And Insurance Rules

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Bonneville County Area

Idaho Falls, ID