Mold Removal Cost And Risk In Asotin County, WA

A typical professional mold job in Asotin County runs about $1,350 to $5,450 before rebuild, using the Lewiston, ID-WA price level. Below are the 3 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Washington rules.

1977Median year homes were built

55%Homes built before 1980

26%Homes rented, not owned

$286,200Median home value

10,165Housing units

22,424People

Housing figures from Census ACS 2019 to 2023.

Half the homes in Asotin County were built before 1977, and 55 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 Asotin County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 99403 has the oldest homes here, a median year of 1976, and ZIP 99401 the newest, 1988.

Typical Prices In Asotin County

JobSizeNational RangeAsotin County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,350 to $5,450
Mold Remediationan attic$2,000 to $7,500$1,800 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 91.2 divided by 100, the price level for Lewiston, ID-WA, 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 $5,450, that cap falls short by about $450 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 Asotin County.

HazardFEMA Risk Rating
Inland floodingRelatively Low
Coastal floodingNot Applicable
HurricaneNot Applicable
Cold waveVery Low
Winter weatherVery Low

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

ZIP Code Neighborhoods In Asotin County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
99401Asotin County198822%$322,100
99402Asotin County197753%$295,700
99403Asotin County197656%$283,800

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.

Washington Rules On Mold

Washington Mold And Insurance Rules

All Washington Mold And Insurance Rules lines

Washington Office of the Insurance Commissioner

All Washington Office of the Insurance Commissioner lines

All Washington counties

Guides

Area Map

Asotin County Area

Lewiston, ID-WA