This is what Oregon DOT site says

A salvage title is required in the following situations (under ORS 819.010; 819.012 and 819.014):

Vehicles declared a total loss by an insurer who is obligated to cover the loss (this includes damaged and unrecoveredstolen vehicles); or

Vehicles that have sustained damage not covered by an insurer and the estimated repair cost is equal to at least 80% ofthe retail market value prior to the damage. ôRetail market valueö is defined as the amount shown in publications used byfinancial institutions (e.g., banks and lenders) in this state

Vehicles wrecked, disassembled, dismantled, substantially altered, or a vehicle sold under ORS 819.220 or other similarOregon county or city ordinance if the buyer intends to repair or rebuild the vehicle; use the frame or unibody to repair orreconstruct another vehicle; or transfer the ownership of the vehicle to anyone except a licensed dismantler whose solepurpose is to completely destroy the vehicle including the frame or unibody