Mold, Insurance And Removal Costs In Massachusetts

Massachusetts has 14 counties and 532 ZIP code neighborhoods on this guide. At the statewide price level a typical professional mold job runs about $1,600 to $6,350 before rebuild.

1963Median year homes were built

68%Homes built before 1980

37%Homes rented, not owned

$525,800Median home value

3,014,657Housing units

6,992,395People

Statewide figures from Census ACS 2019 to 2023, price level 105.8 from BEA Regional Price Parities 2024.

Half the homes in Massachusetts were built before 1963, and 68 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.

The counties with the oldest housing are Suffolk County (1948), Berkshire County (1955), Hampden County (1958), Essex County (1960), Franklin County (1961).

FEMA rates inland flooding high in 7 of 14 Massachusetts counties, and coastal flooding high in 5. Source FEMA National Risk Index, December 2025.

Every Massachusetts County

CountyZIP CodesMedian Year BuiltTypical Job Up ToInland Flood Risk
Barnstable County471976$5,900Relatively Moderate
Berkshire County331955$5,700Relatively Moderate
Bristol County341963$6,100Relatively High
Dukes County71981$5,900Very Low
Essex County431960$6,500Relatively High
Franklin County291961$5,900Relatively Moderate
Hampden County381958$5,750Relatively High
Hampshire County261970$6,000Relatively Moderate
Middlesex County811961$6,500Relatively High
Nantucket County31983$5,900Very Low
Norfolk County401964$6,500Relatively High
Plymouth County341971$6,500Relatively Moderate
Suffolk County331948$6,500Relatively High
Worcester County841966$6,150Relatively High

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