Mold Removal Cost And Risk In Brown County, SD

A typical professional mold job in Brown County runs about $1,300 to $5,200 before rebuild, using the South Dakota nonmetro price level. Below are the 14 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and South Dakota rules.

1974Median year homes were built

59%Homes built before 1980

34%Homes rented, not owned

$212,900Median home value

18,009Housing units

38,079People

Housing figures from Census ACS 2019 to 2023.

Half the homes in Brown County were built before 1974, and 59 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 34 percent of homes in Brown County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 57426 has the oldest homes here, a median year of 1938, and ZIP 57427 the newest, 2004.

Typical Prices In Brown County

JobSizeNational RangeBrown County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,300 to $5,200
Mold Remediationan attic$2,000 to $7,500$1,750 to $6,500
Mold Inspection and Testinga visual inspection$200 to $600$150 to $500
Mold Inspection and Testingan inspection with samples$300 to $1,000$250 to $850
Mold Inspection and Testinga clearance test$300 to $800$250 to $700

Estimate is the national range times 86.7 divided by 100, the price level for the nonmetro part of the state, 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 $5,200, that cap falls short by about $200 at the top of that range. Read the form

Water Hazards FEMA Rates Here

FEMA rates Brown County high for cold wave, 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 Low
Coastal floodingNot Applicable
HurricaneNot Applicable
Cold waveRelatively High
Winter weatherVery High

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

ZIP Code Neighborhoods In Brown County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
57401Brown County197460%$216,300
57426Brown County193890%$256,800
57427Brown County200415%$384,100
57432Brown County194968%$150,700
57433Brown County198743%Not published
57439FerneyNot published100%Not published
57441Brown County196761%$116,000
57445Brown County197260%$185,200
57446Brown County196663%Not published
57449Brown County195190%Not published
57460Brown County198148%$271,900
57474Brown County193887%$215,900
57479Brown County198844%$230,000
57481Brown County197466%$201,000

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.

South Dakota Rules On Mold

South Dakota Mold And Insurance Rules

All South Dakota Mold And Insurance Rules lines

All South Dakota counties

Guides

Area Map

Brown County Area

Aberdeen, SD