Mold Removal Cost And Risk In Ada County, ID

A typical professional mold job in Ada County runs about $1,500 to $5,900 before rebuild, using the Boise City, ID price level. Below are the 14 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Idaho rules.

1996Median year homes were built

29%Homes built before 1980

29%Homes rented, not owned

$476,000Median home value

205,068Housing units

508,052People

Housing figures from Census ACS 2019 to 2023. Remediation workers here earn a median $23.39 an hour, BLS May 2025 wage survey.

Half the homes in Ada County were built before 1996, and 29 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 29 percent of homes in Ada County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 83702 has the oldest homes here, a median year of 1967, and ZIP 83669 the newest, 2009.

Typical Prices In Ada County

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

Estimate is the national range times 98.4 divided by 100, the price level for Boise City, 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 $5,900, that cap falls short by about $900 at the top of that range. Read the form

Water Hazards FEMA Rates Here

FEMA rates Ada County high for 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 Low
Winter weatherVery High

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

ZIP Code Neighborhoods In Ada County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
83616Ada County200414%$720,300
83634Ada County200414%$414,900
83642Meridian200413%$492,300
83646Meridian20066%$488,000
83669Ada County20098%$535,500
83702Ada County196764%$708,000
83703Boise City198640%$477,000
83704Boise City198050%$354,400
83705Boise City197268%$378,800
83706Boise City198441%$488,900
83709Ada County199731%$440,700
83712Ada County197756%$757,700
83713Boise City199417%$421,600
83714Ada County199819%$468,100

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.

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Ada County Area

Boise City, ID