Mobile mechanic license in Washington

Do you need a license to work as a mobile mechanic in Washington? Requirements, fees, and the rules that actually apply.

In Washington, mechanic licensing is handled as follows: — (WA Dept. of Revenue (UBI)), fee $90 (initial business license), plus a No state bond.

Key facts — Washington
  • State license: See details below
  • Fee: $90 (initial business license)
  • Bond: No state bond
  • Authority: WA Dept. of Revenue (UBI)
  • Federal: EPA Section 609 certification is required nationwide to service vehicle A/C

Washington at a glance

RequirementNo (RCW 46.71 disclosures)
License / registration
Issuing authorityWA Dept. of Revenue (UBI)
Fee$90 (initial business license)
RenewalAnnual
Surety bondNo state bond
Scope / notesYes

Federal rules that apply everywhere

Regardless of your state, these apply to mobile mechanics nationwide:

Frequently asked questions

Do you need a license to be a mobile mechanic in Washington?

See the details above for Washington.

How much does a mechanic license cost in Washington?

The Washington fee is approximately $90 (initial business license) plus a No state bond.

Do mobile mechanics need insurance in Washington?

Washington does not require insurance to be licensed, but general liability and garage-keepers coverage are strongly advised and are typically required by fleet clients, apartment complexes, and dealer accounts.

Can you do A/C work as a mobile mechanic in Washington?

Only if you hold EPA Section 609 certification, which is a federal requirement nationwide. It is a single exam, does not expire, and is required before you handle refrigerant on any vehicle.

Primary source
WA Dept. of Revenue (UBI) ↗ · Verified 2026-04-27
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