Central Vacuum Systems
0 contractors hold a California D-04 Central Vacuum Systems license
What Does a D-04 License Cover?
Installs, modifies, maintains, or repairs central vacuum systems, pneumatic tube dispatching systems, or any other pipeline operating systems of reduced pressure.
Hiring a Central Vacuum Systems
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.
A California contractor license is generally required when a project costs $1,000 or more in combined labor and materials, requires a building permit, or uses additional workers. Small jobs cannot be split from a larger project to qualify for the exemption. Read the CSLB requirements.
Also in Limited specialties
Licensing Resources
Deposit and payment rules for California contracts
Home improvement contract requirements
How to verify a contractor license
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