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These companies serve Brea from nearby bases in towns including Anaheim, Orange and Santa Ana.
24 companies listed · 9 open 24/7 · 22 open weekends · all 24 rated 4.5+ · 9 show a license
Data verified October 15, 2026
Listed for homeowners in and around Brea, CA, these 24 companies test for mold and indoor air problems. Listings show what each one states about sampling, lab work and the environmental tests it offers, plus ratings and quotes from public reviews.
The 24 companies on this page are rated from 4.7 to 5.0 across 5,516 reviews; 12 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (93%), quality (80%) and responsiveness (78%). The topics that come up most in reviews of the companies on this page are "communication", "price" and "efficient". 9 are open around the clock; 22 are open on Saturdays and 18 on Sundays. The services the companies on this page list most often on their websites are mold removal (4), water damage (4), fire damage (3), mold inspections (3) and mold remediation (3). 9 show a license on their websites; 8 list staff certifications (IICRC and InterNACHI) and 2 have a BBB rating of A or A+. Domain records put 12 websites of the companies on this page at ten or more years old; the oldest dates from 1996. 10 offer emergency call-outs; 6 give free estimates; 5 are family- or locally-owned and 1 lists coupons or special offers. 1 has Spanish-speaking staff. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Not when the first visit ends with a large removal quote attached. You have 24 companies on this page, so getting a second diagnosis is straightforward. Ask each one what it thinks the water source is. Two independent answers that match is the strongest signal you will get.
