Mold Removal Cost And Risk In St. Mary's County, MD

A typical professional mold job in St. Mary's County runs about $1,500 to $6,050 before rebuild, using the Lexington Park, MD price level. Below are the 25 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Maryland rules.

1992Median year homes were built

30%Homes built before 1980

27%Homes rented, not owned

$390,900Median home value

46,078Housing units

114,372People

Housing figures from Census ACS 2019 to 2023.

Half the homes in St. Mary's County were built before 1992, and 30 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 27 percent of homes in St. Mary's County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 20628 has the oldest homes here, a median year of 1946, and ZIP 20619 the newest, 2002.

Typical Prices In St. Mary's County

JobSizeNational RangeSt. Mary's County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,500 to $6,050
Mold Remediationan attic$2,000 to $7,500$2,000 to $7,550
Mold Inspection and Testinga visual inspection$200 to $600$200 to $600
Mold Inspection and Testingan inspection with samples$300 to $1,000$300 to $1,000
Mold Inspection and Testinga clearance test$300 to $800$300 to $800

Estimate is the national range times 100.8 divided by 100, the price level for Lexington Park, MD, 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 $6,050, that cap falls short by about $1,050 at the top of that range. Read the form

Water Hazards FEMA Rates Here

FEMA rates none of the water hazards below as high for St. Mary's County.

HazardFEMA Risk Rating
Inland floodingRelatively Low
Coastal floodingRelatively Moderate
HurricaneRelatively Moderate
Cold waveRelatively Low
Winter weatherRelatively Low

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

ZIP Code Neighborhoods In St. Mary's County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
20606St. Mary's County197476%$464,100
20609St. Mary's County198346%$474,700
20618St. Mary's County198148%$291,900
20619St. Mary's County200216%$364,200
20620Callaway199223%$369,200
20621St. Mary's County197858%$562,500
20624St. Mary's County199416%$423,700
20626St. Mary's County196080%Not published
20628St. Mary's County194669%$412,100
20630St. Mary's County198342%$584,600
20634California199516%$334,800
20636St. Mary's County199432%$470,300
20650St. Mary's County199626%$464,000
20653St. Mary's County199330%$341,900
20656St. Mary's CountyNot published100%Not published
20659St. Mary's County198833%$388,400
20660St. Mary's CountyNot published0%Not published
20667St. Mary's County199217%Not published
20670St. Mary's County199532%Not published
20674Piney Point197270%$398,600
20680St. Mary's County195582%$392,400
20684St. Mary's County199511%$375,500
20687St. Mary's County196069%$771,600
20690Tall Timbers198443%$558,900
20692St. Mary's County199516%$381,700

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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St. Mary's County Area

Lexington Park, MD