Mold Removal Cost And Risk In Alameda County, CA

A typical professional mold job in Alameda County runs about $1,750 to $6,950 before rebuild, using the San Francisco-Oakland-Fremont, CA price level. Below are the 48 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and California rules.

1969Median year homes were built

66%Homes built before 1980

46%Homes rented, not owned

$1,057,400Median home value

630,726Housing units

1,651,949People

Housing figures from Census ACS 2019 to 2023. Remediation workers here earn a median $28.65 an hour, BLS May 2025 wage survey.

Half the homes in Alameda County were built before 1969, and 66 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 46 percent of homes in Alameda County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 94602 has the oldest homes here, a median year of 1938, and ZIP 95391 the newest, 2010.

Typical Prices In Alameda County

JobSizeNational RangeAlameda County 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 Alameda County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
94501Alameda195980%$1,213,100
94502Alameda198335%$1,182,600
94536Fremont197564%$1,210,200
94538Fremont197755%$1,104,800
94539Fremont197952%$1,878,400
94541Hayward196766%$781,900
94542Hayward197853%$1,085,900
94544Hayward197068%$801,900
94545Hayward197264%$838,800
94546Alameda County196076%$976,300
94550Alameda County197757%$1,146,700
94551Alameda County198149%$931,000
94552Alameda County198829%$1,286,300
94555Fremont198340%$1,295,000
94560Newark197560%$1,094,200
94566Pleasanton198244%$1,592,200
94568Dublin200321%$1,224,100
94577San Leandro195974%$824,900
94578San Leandro196579%$793,500
94579San Leandro195881%$815,900
94580San Lorenzo195586%$820,100
94586Alameda County196571%$1,557,900
94587Union City197953%$1,058,200
94588Alameda County198637%$1,277,200
94601Oakland194981%$703,100
94602Oakland193890%$1,111,800
94603Oakland195283%$596,100
94605Oakland195382%$840,700
94606Oakland195183%$747,600
94607Oakland197753%$744,600
94608Oakland197161%$826,900
94609Oakland194079%$1,147,900
94610Oakland195690%$1,324,500
94611Oakland195980%$1,485,000
94612Oakland197753%$814,000
94618Oakland194674%$1,789,100
94619Oakland194784%$997,300
94621Oakland195577%$537,600
94702Berkeley194684%$1,168,200
94703Berkeley194482%$1,273,000
94704Berkeley196668%$918,500
94705Oakland193882%$1,892,300
94706Albany195078%$1,188,100
94707Berkeley193895%$1,626,500
94709Berkeley195085%$1,240,500
94710Berkeley196759%$1,084,500
94720Berkeley195868%Not published
95391Alameda County20107%$859,600

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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San Francisco-Oakland-Fremont, CA