Mold Removal Cost And Risk In Orange County, CA

A typical professional mold job in Orange County runs about $1,700 to $6,800 before rebuild, using the Los Angeles-Long Beach-Anaheim, CA price level. Below are the 87 ZIP code neighborhoods, the age of the homes, FEMA's water hazard ratings and California rules.

1977Median year homes were built

57%Homes built before 1980

44%Homes rented, not owned

$915,500Median home value

1,138,473Housing units

3,164,063People

Housing figures from Census ACS 2019 to 2023. Remediation workers here earn a median $24.59 an hour, BLS May 2025 wage survey.

Half the homes in Orange County were built before 1977, and 57 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 44 percent of homes in Orange County are rented, so most households here carry an owner's policy on the building itself.

Housing age swings by neighborhood. ZIP 92676 has the oldest homes here, a median year of 1947, and ZIP 92618 the newest, 2013.

Typical Prices In Orange County

JobSizeNational RangeOrange County Estimate
Mold Remediationa typical professional job$1,500 to $6,000$1,700 to $6,800
Mold Remediationan attic$2,000 to $7,500$2,250 to $8,500
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 113.6 divided by 100, the price level for Los Angeles-Long Beach-Anaheim, CA, 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 $6,800, that cap falls short by about $1,800 at the top of that range. Read the form

Water Hazards FEMA Rates Here

FEMA rates Orange County high for inland flooding, coastal flooding. 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 floodingVery High
Coastal floodingRelatively High
HurricaneNo Rating
Cold waveNo Rating
Winter weatherVery Low

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

ZIP Code Neighborhoods In Orange County

ZIPAreaMedian Year BuiltBuilt Before 1980Median Home Value
90620Buena Park195987%$782,000
90621Buena Park197564%$734,400
90623La Palma197282%$920,200
90630Cypress197177%$866,400
90631La Habra196776%$757,900
90680Stanton197565%$571,300
90720Los Alamitos196478%$1,166,200
90740Seal Beach196687%$488,400
90742Huntington Beach196375%$1,625,000
90743Seal Beach196987%$2,000,001
92602Irvine20054%$1,323,200
92603Irvine200125%$1,718,800
92604Irvine197680%$993,900
92606Irvine199423%$1,046,700
92610Lake Forest19955%$939,000
92612Irvine199230%$938,900
92614Irvine198814%$983,100
92617Irvine199814%$666,500
92618Irvine20135%$1,153,400
92620Irvine200417%$1,204,100
92624Dana Point197375%$1,142,400
92625Newport Beach197464%$2,000,001
92626Costa Mesa197270%$1,037,700
92627Costa Mesa196968%$1,074,900
92629Dana Point198145%$1,212,400
92630Lake Forest198049%$858,900
92637Laguna Woods196991%$364,900
92646Huntington Beach197082%$1,031,700
92647Huntington Beach197075%$963,900
92648Huntington Beach198246%$1,176,000
92649Huntington Beach197472%$1,070,800
92651Orange County196476%$2,000,001
92653Laguna Hills197952%$978,400
92655Midway City197170%$723,700
92656Aliso Viejo19956%$849,900
92657Newport Beach19984%$2,000,001
92660Newport Beach197953%$2,000,001
92661Newport Beach196474%$2,000,001
92662Newport Beach195672%$2,000,001
92663Newport Beach197268%$2,000,001
92673San Clemente200014%$1,207,600
92675San Juan Capistrano197955%$929,700
92676Orange County194771%$797,000
92677Laguna Niguel198624%$1,123,000
92678Orange County196380%$988,600
92679Orange County19934%$1,242,900
92683Westminster197076%$820,000
92688Rancho Santa Margarita19934%$857,100
92691Mission Viejo197576%$916,800
92692Mission Viejo198630%$983,800
92694Rancho Mission Viejo20082%$1,042,600
92701Santa Ana197169%$608,300
92703Santa Ana196773%$585,900
92704Santa Ana197078%$641,600
92705North Tustin197076%$1,135,600
92706Santa Ana195984%$839,100
92707Santa Ana196383%$635,600
92708Fountain Valley197382%$1,018,600
92780Tustin197082%$832,200
92782Tustin19985%$1,028,900
92801Anaheim197269%$632,600
92802Anaheim196479%$721,700
92804Anaheim196681%$729,700
92805Anaheim197554%$667,400
92806Anaheim197272%$791,200
92807Anaheim197669%$918,000
92808Anaheim199315%$1,036,800
92821Brea197661%$851,800
92823Orange County200825%$1,061,200
92831Fullerton196979%$821,300
92832Fullerton196371%$773,100
92833Fullerton197068%$844,000
92835Fullerton197272%$981,700
92840Garden Grove196176%$746,900
92841Garden Grove196278%$766,400
92843Garden Grove196676%$665,900
92844Garden Grove197074%$706,900
92845Garden Grove196591%$882,600
92861Villa Park197480%$1,686,200
92865Orange196972%$842,700
92866Orange196282%$892,200
92867Orange197067%$951,000
92868Orange197462%$714,300
92869Orange197952%$935,200
92870Placentia197661%$871,000
92886Yorba Linda198051%$1,062,200
92887Yorba Linda198714%$1,130,900

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.

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