Mold Removal Cost And Risk In Snohomish County, WA

A typical professional mold job in Snohomish County runs about $1,650 to $6,650 before rebuild, using the Seattle-Tacoma-Bellevue, WA price level. Below are the 26 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Washington rules.

1989Median year homes were built

36%Homes built before 1980

32%Homes rented, not owned

$644,600Median home value

327,893Housing units

834,648People

Housing figures from Census ACS 2019 to 2023. Remediation workers here earn a median $28.99 an hour, BLS May 2025 wage survey.

Half the homes in Snohomish County were built before 1989, and 36 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 32 percent of homes in Snohomish County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 98201 has the oldest homes here, a median year of 1960, and ZIP 98087 the newest, 2001.

Typical Prices In Snohomish County

JobSizeNational RangeSnohomish County 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 Snohomish 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 floodingRelatively 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 Snohomish County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
98012Mill Creek199917%$811,500
98020Edmonds197164%$959,200
98021Bothell199626%$902,800
98026Edmonds197560%$758,900
98036Lynnwood198444%$693,300
98037Lynnwood198441%$683,600
98043Mountlake Terrace197164%$605,800
98087North Lynnwood200121%$633,200
98201Snohomish County196065%$476,900
98203Everett197457%$575,300
98204Snohomish County198923%$386,300
98208Eastmont198933%$641,300
98223Snohomish County199429%$556,900
98241Snohomish County197560%$391,000
98251Snohomish County199230%$414,900
98252Snohomish County199329%$492,500
98256Snohomish County196866%$379,500
98258Lake Stevens199527%$606,600
98270Marysville199134%$540,000
98271Snohomish County199432%$483,100
98272Snohomish County199426%$638,300
98275Mukilteo199025%$830,000
98290Snohomish County198642%$717,600
98292Snohomish County199231%$610,700
98294Snohomish County199136%$462,500
98296Maltby199421%$867,700

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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Seattle-Tacoma-Bellevue, WA