Top Notch
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Many San Marcos homeowners make the mistake of hiring the cheapest contractor they find without checking credentials. Since California doesn't require a specific state license for mold work, it's easy for unqualified people to claim expertise. Before you hire anyone, verify they hold a valid CSLB license, current insurance, and IICRC certification. Top Notch meets these standards, and they understand the specific challenges San Marcos faces with its humid climate and older housing stock.
Given that the median home in San Marcos was built in 1994, mold issues aren't uncommon in this area. A typical remediation project runs between $1900 and $5650, so you'll want a contractor you can trust to do the job right the first time. Top Notch has earned a 5-star rating across 148 Google reviews from local customers. Before you sign any agreement, ask to see proof of their current CSLB license, insurance documentation, and IICRC certification.
Based on public rating data and local climate records, not on individual reviews. We do not represent or endorse this firm.
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Business data sourced from public records · Last updated March 2026
MoldGuide is a lead referral service. We do not employ, endorse, or guarantee the work of any contractor listed in this directory. Verify licenses, insurance, and certifications independently before hiring.