Mold Removal Cost And Risk In ZIP 98121, Seattle WA

A typical professional mold job in ZIP 98121, Seattle runs about $1,650 to $6,650 before rebuild. Half the homes here were built before 2004, newer than the King County median of 1983.

2004Median year homes were built

20%Homes built before 1980

75%Homes rented, not owned

$796,600Median home value

$2,329Median gross rent

15,781Housing units

Neighborhood figures for ZIP Code Tabulation Area 98121 from Census ACS 2019 to 2023. Remediation pay in this metro is $28.99 an hour, BLS May 2025 wage survey.

20 percent of homes in 98121 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.

Most homes here are rented, 75 percent against 44 percent across King County. A renter's policy covers belongings and liability, while the owner's policy covers the building.

The top of a typical mold job here, $6,650, is about 0.8 percent of the median home value of $796,600.

Typical Prices In 98121

JobSizeNational Range98121 Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,650 to $6,650
Mold Remediationan attic$2,000 to $7,500$2,200 to $8,350
Mold Inspection and Testinga visual inspection$200 to $600$200 to $650
Mold Inspection and Testingan inspection with samples$300 to $1,000$350 to $1,100
Mold Inspection and Testinga clearance test$300 to $800$350 to $900

Estimate is the national range times 111.1 divided by 100, the price level for Seattle-Tacoma-Bellevue, 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 $6,650, that cap falls short by about $1,650 at the top of that range. Read the form

Water Hazards FEMA Rates For King County

FEMA rates King County high for inland flooding, 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 floodingVery High
Coastal floodingRelatively Moderate
HurricaneNot Applicable
Cold waveRelatively Low
Winter weatherRelatively High

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

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Part of Seattle, King County, Washington.

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98121, WA Area

Seattle, King County