Mold Removal Cost In Seattle, WA

A typical professional mold job in Seattle runs about $1,650 to $6,650 before rebuild. Seattle sits in King County.

1974Median year homes were built

54%Homes built before 1980

56%Homes rented, not owned

$912,100Median home value

382,933Housing units

741,440People

Figures for Seattle city from Census ACS 2019 to 2023.

Half the homes in Seattle were built before 1974, and 54 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. Most homes in Seattle are rented, 56 percent. A renter's policy covers belongings and liability, while the owner's policy covers the building.

Typical Prices In Seattle

JobSizeNational RangeSeattle 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 Here

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.

ZIP Code Neighborhoods In Seattle

ZIPMedian Year BuiltHomes RentedMedian Home Value
98101199784%$741,400
98102197274%$988,700
98103196755%$1,012,900
98104198792%$663,000
98105197567%$1,261,100
98106198042%$666,800
98107199261%$924,900
98108196943%$693,500
98109200379%$986,000
98112194439%$1,407,400
98115196041%$1,041,500
98116197346%$917,000
98117195029%$1,028,100
98118196642%$746,400
98119196861%$1,032,500
98121200475%$796,600
98122198772%$929,400
98125197354%$844,500
98126196340%$751,900
98134197066%$385,300
98136195936%$900,000
98144197354%$890,400
98164Not published16%$714,600
98199196038%$1,160,000

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

Guides

Area Map

Seattle Area

Seattle city