How much can a Washington repair estimate increase?
Washington generally requires approval before the authorized repair estimate is exceeded by more than 10%. For face-to-face work expected to exceed $100, customers generally have a right to a written estimate unless waived or an exception applies.
Washington written estimates, 10% overrun approval, and repair invoices
Washington generally entitles a customer to a written estimate for face-to-face repairs expected to cost more than $100 unless the estimate is waived or the transaction fits an exception. The facility must obtain approval before exceeding the authorized estimate by more than 10% and provide a written invoice after the work.
You perform covered motor-vehicle repairs for customers in Washington.
Check recent jobs for a written estimate, customer approval before exceeding allowed overrun limits, and a complete repair invoice.
Audit recent repair orders for the required estimate choice, customer authorization, approval before charges exceed the estimate by more than 10%, final written invoices, and requested replaced-part handling.
Official source and review date
Washington Attorney General — Auto Repair ↗
Our reference was verified Sep 24, 2026. For the complete scope, exceptions and exact wording, use the official source.
For informational shop planning only. Not legal advice or a complete inventory of local and Federal requirements. Verify the official source and applicability before changing shop procedures.