Mold Removal Cost And Risk In Marin County, CA

A typical professional mold job in Marin County runs about $1,750 to $6,950 before rebuild, using the San Francisco-Oakland-Fremont, CA price level. Below are the 29 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and California rules.

1966Median year homes were built

76%Homes built before 1980

36%Homes rented, not owned

$1,390,000Median home value

111,860Housing units

258,765People

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 Marin County were built before 1966, and 76 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 36 percent of homes in Marin County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 94940 has the oldest homes here, a median year of 1938, and ZIP 94929 the newest, 1984.

Typical Prices In Marin County

JobSizeNational RangeMarin 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 Marin 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 floodingRelatively High
Coastal floodingVery High
HurricaneNot Applicable
Cold waveNo Rating
Winter weatherVery Low

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

ZIP Code Neighborhoods In Marin County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
94901San Rafael196577%$1,369,500
94903San Rafael196774%$1,149,400
94904Kentfield196385%$2,000,001
94920Tiburon196875%$2,000,001
94924Marin County196478%$2,000,001
94925Corte Madera196079%$1,702,000
94929Dillon Beach198444%$1,564,200
94930Marin County195489%$1,152,100
94933Lagunitas-Forest Knolls194880%$886,100
94937Marin County196174%$1,536,500
94938Marin County196192%$1,005,100
94939Larkspur197266%$2,000,001
94940Marin County193894%Not published
94941Marin County196180%$1,990,100
94945Novato197468%$1,094,300
94946Marin County197760%$2,000,001
94947Marin County196979%$995,000
94949Novato197953%$1,075,600
94950Marin CountyNot published100%Not published
94952Marin County196570%$1,016,800
94956Marin County198050%$2,000,001
94957Ross194281%$2,000,001
94960Sleepy Hollow195587%$1,589,200
94963San Geronimo197758%$1,220,800
94964Marin County1954100%Not published
94965Marin County196785%$1,492,600
94970Marin County195958%$1,458,300
94971Marin County197050%$880,000
94973Marin County195288%$1,111,100

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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