Mold Removal Cost In Union City, CA

A typical professional mold job in Union City runs about $1,750 to $6,950 before rebuild. Union City sits in Alameda County.

1979Median year homes were built

53%Homes built before 1980

33%Homes rented, not owned

$1,058,200Median home value

21,923Housing units

68,141People

Figures for Union City city from Census ACS 2019 to 2023.

Half the homes in Union City were built before 1979, and 53 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 33 percent of homes in Union City are rented, so most households here carry an owner's policy on the building itself.

Typical Prices In Union City

JobSizeNational RangeUnion City Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,750 to $6,950
Mold Remediationan attic$2,000 to $7,500$2,300 to $8,650
Mold Inspection and Testinga visual inspection$200 to $600$250 to $700
Mold Inspection and Testingan inspection with samples$300 to $1,000$350 to $1,150
Mold Inspection and Testinga clearance test$300 to $800$350 to $900

Estimate is the national range times 115.6 divided by 100, the price level for San Francisco-Oakland-Fremont, CA, 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 $6,950, that cap falls short by about $1,950 at the top of that range. Read the form

Water Hazards FEMA Rates Here

FEMA rates Alameda County high for inland flooding, coastal flooding. 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 High
HurricaneNot Applicable
Cold waveNo Rating
Winter weatherVery Low

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

ZIP Code Neighborhoods In Union City

ZIPMedian Year BuiltHomes RentedMedian Home Value
94587197933%$1,058,200

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