No License Required

Mold licensing in California.

Research last verified 2026-06. Confirm current requirements directly with the state before beginning work.

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Inspection and assessment

Not required

No state license required.

  • 01The California Department of Public Health explicitly states there is no legal requirement for training, licensing, or certification of mold assessors.
  • 02California treats visible mold as a substandard housing condition and requires written disclosure to tenants, but does not regulate who can inspect or assess it.
  • 03Voluntary certifications (IICRC, ACAC, NORMI) are recommended.

Regulating body: California Department of Public Health (CDPH)

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Mold remediation

Not required

No mold-specific license required.

  • 01No mold-specific remediation license exists in California.
  • 02General contractor licensing (CSLB) is required for any construction or improvement project valued over $500 — this typically applies to remediation work.
  • 03Mold remediation alone, without structural work, does not trigger CSLB licensing.

After you verify the rule

Keep the requirements visible as the job moves.

Mold Inspector can organize scheduling, field documentation, reports, quotes, and invoices. It does not replace required training, licensing, sampling protocols, legal review, or professional judgment.

See the workflow

Always verify directly with California. Requirements may have changed since 2026-06. Confirm the current rule with the responsible regulatory body before beginning mold-related work. This page is a research starting point, not legal advice.