D21 · Limited specialties

Machinery and Pumps

1107 contractors hold a California D21 Machinery and Pumps license

What Does a D21 License Cover?

Installs, maintains, and repairs machinery and pumps.

Hiring a Machinery and Pumps

Before hiring, verify the contractor's license is active and that they carry current workers' compensation insurance and a contractor bond. California law requires a written contract for home improvement projects over $500. Get at least three written estimates and check references before making a decision.

California law requires a contractor license for this type of work on projects valued at $500 or more (combined labor and materials). Hiring an unlicensed contractor for work requiring a license may void your consumer protections.

Also in Limited specialties

C-61: Limited Specialty Contractor

Licensing Resources

Deposit and payment rules for California contracts
Home improvement contract requirements
How to verify a contractor license

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