(1) The site together with the land that may be required for the convenient use and occupation of the improvement constructed on the site, to be determined by the court at the time of the foreclosure of the lien, shall also be subject to the liens created under ORS 87.010 (1), (4) and (5) if, at the time of the commencement of the improvement, the person who caused the improvement to be constructed was the owner of that site and land. If the person owned less than a fee-simple estate in the site and land, then only the interest of the person therein shall be subject to the lien.
(2) If a lien created under ORS 87.010 (1), (4) and (5) is claimed against a unit as defined in ORS 100.005, the common elements appertaining to that unit are also subject to the lien.
(3) When the interest of the person who caused the improvement to be constructed is a leasehold interest, and that person has forfeited the rights of the person thereto, the purchaser of the improvement and leasehold term at any sale under the provisions of ORS 87.001 to 87.060 and 87.075 to 87.093, is deemed to be the assignee of the leasehold term, and may pay the lessor all arrears of rent or other money and costs due under the lease. If the lessor regains possession of the property, or obtains judgment for the possession thereof prior to the commencement of construction of the improvement, the purchaser may remove the improvement within 30 days after the purchaser purchases it, and the owner of the land shall receive the rent due the owner, payable out of the proceeds of the sale, according to the terms of the lease, down to the time of removal.