Mold Removal Cost And Risk In Johnston County, OK

A typical professional mold job in Johnston County runs about $1,250 to $5,000 before rebuild, using the Oklahoma nonmetro price level. Below are the 10 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and Oklahoma rules.

1983Median year homes were built

45%Homes built before 1980

30%Homes rented, not owned

$110,700Median home value

4,710Housing units

10,334People

Housing figures from Census ACS 2019 to 2023.

Half the homes in Johnston County were built before 1983, and 45 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 30 percent of homes in Johnston County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 74836 has the oldest homes here, a median year of 1973, and ZIP 74748 the newest, 2001.

Typical Prices In Johnston County

JobSizeNational RangeJohnston County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,250 to $5,000
Mold Remediationan attic$2,000 to $7,500$1,650 to $6,250
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 $650

Estimate is the national range times 83.6 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 $5,000, that cap covers the top of that range. Read the form

Water Hazards FEMA Rates Here

FEMA rates none of the water hazards below as high for Johnston County.

HazardFEMA Risk Rating
Inland floodingVery Low
Coastal floodingNot Applicable
HurricaneVery Low
Cold waveRelatively Low
Winter weatherRelatively Low

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

ZIP Code Neighborhoods In Johnston County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
73432Johnston County199230%$114,200
73447Johnston County198739%$95,700
73450Johnston County199037%$124,200
73455Johnston County198149%$68,600
73460Johnston County198050%$142,400
73461Johnston County197857%$98,800
74530Johnston County198149%$57,200
74748Johnston County200130%$73,900
74836Johnston County197356%$210,400
74856Johnston County197758%$121,900

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.

Oklahoma Rules On Mold

Oklahoma Mold And Insurance Rules

All Oklahoma Mold And Insurance Rules lines

All Oklahoma counties

Guides

Area Map

Johnston County Area

Oklahoma