ORS § 87.027
An owner who receives a notice of right to a lien in accordance with the provisions of ORS 87.021 may demand, in writing, from the person providing materials, equipment, services or labor a list of materials or equipment or description of labor or services supplied or a statement of the contractual basis for supplying the materials, equipment, services or labor, including the percentage of the contract completed, and the charge therefor to the date of the demand. The supplier's statement shall be delivered to the owner within 15 days, not including Saturdays, Sundays and other holidays as defined in ORS 187.010, of receipt of the owner's written demand, as evidenced by a receipt or a receipt of delivery of a certified or registered letter containing the demand. Failure of the supplier to furnish the information requested constitutes a loss of attorney fees and costs otherwise allowable in a suit to foreclose a lien.
ORS 87.027