Mold Removal Cost And Risk In Frederick County, MD

A typical professional mold job in Frederick County runs about $1,650 to $6,550 before rebuild, using the Washington-Arlington-Alexandria, DC-VA-MD-WV price level. Below are the 27 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Maryland rules.

1990Median year homes were built

35%Homes built before 1980

23%Homes rented, not owned

$437,700Median home value

106,480Housing units

280,341People

Housing figures from Census ACS 2019 to 2023. Remediation workers here earn a median $23.26 an hour, BLS May 2025 wage survey.

Half the homes in Frederick County were built before 1990, and 35 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 23 percent of homes in Frederick County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 21717 has the oldest homes here, a median year of 1938, and ZIP 21704 the newest, 2007.

Typical Prices In Frederick County

JobSizeNational RangeFrederick County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,650 to $6,550
Mold Remediationan attic$2,000 to $7,500$2,200 to $8,150
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 $850

Estimate is the national range times 108.9 divided by 100, the price level for Washington-Arlington-Alexandria, DC-VA-MD-WV, 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 $6,550, that cap falls short by about $1,550 at the top of that range. Read the form

Water Hazards FEMA Rates Here

FEMA rates Frederick 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
HurricaneRelatively Low
Cold waveRelatively Low
Winter weatherRelatively High

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

ZIP Code Neighborhoods In Frederick County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
21701Frederick County198446%$404,900
21702Frederick County199033%$384,800
21703Frederick County199515%$364,300
21704Frederick County200713%$585,900
21710Frederick County199626%$582,100
21714Braddock Heights195954%$314,700
21716Brunswick198149%$335,000
21717Frederick County193877%$430,000
21718Burkittsville193891%$446,900
21727Frederick County198447%$304,000
21754Frederick County198936%$619,700
21755Frederick County198933%$493,700
21758Frederick County197458%$388,200
21762LibertytownNot published100%Not published
21769Frederick County198346%$490,800
21770Green Valley198835%$599,700
21771Frederick County198735%$532,200
21773Frederick County198445%$475,700
21774Linganore199711%$508,100
21777Point of Rocks19988%$441,300
21778Frederick County197082%$415,700
21780Frederick County195667%$419,900
21788Frederick County197852%$342,700
21790Frederick CountyNot published0%Not published
21791Frederick County196470%$370,300
21793Frederick County198147%$416,400
21798Frederick County198739%$466,100

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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Washington-Arlington-Alexandria, DC-VA-MD-WV

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