Mold Removal Cost And Risk In Middlesex County, NJ

A typical professional mold job in Middlesex County runs about $1,700 to $6,750 before rebuild, using the New York-Newark-Jersey City, NY-NJ price level. Below are the 36 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and New Jersey rules.

1973Median year homes were built

58%Homes built before 1980

36%Homes rented, not owned

$439,300Median home value

316,633Housing units

861,535People

Housing figures from Census ACS 2019 to 2023. Remediation workers here earn a median $35.61 an hour, BLS May 2025 wage survey.

Half the homes in Middlesex County were built before 1973, and 58 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 36 percent of homes in Middlesex County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 08861 has the oldest homes here, a median year of 1957, and ZIP 08831 the newest, 1992.

Typical Prices In Middlesex County

JobSizeNational RangeMiddlesex County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,700 to $6,750
Mold Remediationan attic$2,000 to $7,500$2,250 to $8,450
Mold Inspection and Testinga visual inspection$200 to $600$250 to $700
Mold Inspection and Testingan inspection with samples$300 to $1,000$350 to $1,150
Mold Inspection and Testinga clearance test$300 to $800$350 to $900

Estimate is the national range times 112.6 divided by 100, the price level for New York-Newark-Jersey City, NY-NJ, 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 $6,750, that cap falls short by about $1,750 at the top of that range. Read the form

Water Hazards FEMA Rates Here

FEMA rates Middlesex County high for inland flooding, coastal flooding, 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 High
Coastal floodingRelatively High
HurricaneRelatively Moderate
Cold waveRelatively High
Winter weatherVery High

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

ZIP Code Neighborhoods In Middlesex County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
07001Avenel197853%$351,200
07008Carteret196072%$370,100
07064Port Reading196278%$415,500
07067Colonia195984%$473,200
07077Sewaren195867%$414,900
07080South Plainfield196274%$444,100
07095Woodbridge196859%$361,200
07747Middlesex County197852%$464,100
08512Middlesex County198149%$618,300
08536Middlesex County198530%$655,100
08810Middlesex County198723%$471,700
08816Middlesex County197556%$502,600
08817Middlesex County196864%$411,100
08820Middlesex County198241%$597,700
08824Kendall Park197853%$602,500
08828Helmetta198442%$321,400
08830Iselin196170%$394,200
08831Middlesex County199232%$489,700
08832Keasbey197467%$328,100
08837Middlesex County196766%$432,500
08840Metuchen195975%$517,700
08846Middlesex196475%$414,600
08850Milltown196285%$436,600
08852Middlesex County198920%$489,100
08854Middlesex County197458%$423,900
08857Middlesex County197357%$459,400
08859Sayreville197064%$407,100
08861Perth Amboy195773%$340,900
08863Fords195785%$414,100
08872Sayreville197657%$404,300
08879Sayreville196271%$377,700
08882South River195881%$382,500
08884Spotswood196768%$358,100
08901New Brunswick196763%$316,800
08902Middlesex County198243%$402,400
08904Highland Park196174%$463,600

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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Middlesex County Area

New York-Newark-Jersey City, NY-NJ