Mold Removal Cost And Risk In Boulder County, CO

A typical professional mold job in Boulder County runs about $1,600 to $6,300 before rebuild, using the Boulder, CO price level. Below are the 16 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Colorado rules.

1986Median year homes were built

42%Homes built before 1980

38%Homes rented, not owned

$713,900Median home value

142,809Housing units

328,317People

Housing figures from Census ACS 2019 to 2023. Remediation workers here earn a median $22.67 an hour, BLS May 2025 wage survey.

Half the homes in Boulder County were built before 1986, and 42 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 38 percent of homes in Boulder County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 80025 has the oldest homes here, a median year of 1938, and ZIP 80027 the newest, 1994.

Typical Prices In Boulder County

JobSizeNational RangeBoulder County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,600 to $6,300
Mold Remediationan attic$2,000 to $7,500$2,100 to $7,900
Mold Inspection and Testinga visual inspection$200 to $600$200 to $650
Mold Inspection and Testingan inspection with samples$300 to $1,000$300 to $1,050
Mold Inspection and Testinga clearance test$300 to $800$300 to $850

Estimate is the national range times 105.2 divided by 100, the price level for Boulder, CO, 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 $6,300, that cap falls short by about $1,300 at the top of that range. Read the form

Water Hazards FEMA Rates Here

FEMA rates Boulder 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 Moderate
Winter weatherRelatively High

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

ZIP Code Neighborhoods In Boulder County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
80025Boulder County1938100%$643,800
80026Boulder County199326%$664,000
80027Boulder County199414%$822,700
80301Boulder County198539%$761,500
80302Boulder County197462%$1,123,800
80303Boulder County197854%$941,600
80304Boulder197953%$1,166,100
80305Boulder197078%$985,700
80310BoulderNot published100%Not published
80455Boulder County197853%$535,700
80466Boulder County197260%$659,900
80481Boulder County197856%$551,500
80501Longmont197759%$461,400
80503Boulder County199327%$704,800
80510Boulder County194788%$772,100
80540Boulder County198346%$787,800

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.

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