Mold Removal Cost And Risk In Strafford County, NH

A typical professional mold job in Strafford County runs about $1,600 to $6,500 before rebuild, using the Boston-Cambridge-Newton, MA-NH price level. Below are the 16 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and New Hampshire rules.

1978Median year homes were built

52%Homes built before 1980

33%Homes rented, not owned

$332,400Median home value

56,162Housing units

131,743People

Housing figures from Census ACS 2019 to 2023. Remediation workers here earn a median $24.00 an hour, BLS May 2025 wage survey.

Half the homes in Strafford County were built before 1978, and 52 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 33 percent of homes in Strafford County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 03869 has the oldest homes here, a median year of 1963, and ZIP 03825 the newest, 1988.

Typical Prices In Strafford County

JobSizeNational RangeStrafford County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,600 to $6,500
Mold Remediationan attic$2,000 to $7,500$2,150 to $8,100
Mold Inspection and Testinga visual inspection$200 to $600$200 to $650
Mold Inspection and Testingan inspection with samples$300 to $1,000$300 to $1,100
Mold Inspection and Testinga clearance test$300 to $800$300 to $850

Estimate is the national range times 108.3 divided by 100, the price level for Boston-Cambridge-Newton, MA-NH, 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 $6,500, that cap falls short by about $1,500 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 Strafford County.

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

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

ZIP Code Neighborhoods In Strafford County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
03820Dover197556%$397,900
03823Strafford County198342%$459,300
03824Strafford County197951%$469,900
03825Strafford County198835%$349,500
03835Strafford County197362%$273,000
03839Rochester198736%$299,800
03851Strafford County198149%$282,500
03852Strafford County198147%$330,900
03855Strafford County198246%$307,400
03861Strafford County198538%$449,300
03867Rochester197258%$259,200
03868Rochester198734%$258,700
03869Strafford County196369%$363,200
03878Somersworth197065%$295,200
03884Strafford County198538%$402,400
03887Strafford County198247%$261,100

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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Strafford County Area

Boston-Cambridge-Newton, MA-NH