Repair-shop disputes generally come down to the same things: the written estimate, what was actually authorized, and the final invoice. Organize those facts and get a free letter outline; the full demand letter is in the $39 Case Pack.
| Estimate required | always |
|---|---|
| Threshold | Not specified |
| Authorization to exceed estimate | written_or_oral |
| Cap on overage | 10% |
| Citation | ORS 646A.480 through 646A.495 |
Source: ORS 646A.480 through 646A.495
Oregon requires a vehicle repair shop to prepare a written cost estimate before beginning ANY work - this is unconditional, not triggered only by customer request or a dollar threshold. A copy must be given to the owner (as a separate document or as part of the invoice) no later than before final payment, and the shop must retain its own copy. If the estimate shows a job will cost the owner more than $200, the shop needs a SEPARATE authorization from the owner (or an owner-designated third party) before evaluating, disassembling, or performing labor beyond what was estimated. That separate $200-trigger authorization can only be waived if the owner receives an explanation of the requirement and signs a distinct document, directly under a clearly identified waiver statement - a notably more formal waiver process than most states. If actual costs will exceed the estimate by more than 10% or $200 (whichever is LESS), the shop must cross out and revise the estimate, or prepare an entirely new one and void the old, before getting authorization to proceed.
Wherewithal is an organizational tool only. Not legal advice. Consider consulting a licensed attorney.