If building permits are not issued for site development authorized by a discretionary permit within one year of the date of approval or such longer time as may be stipulated as a condition of approval, the permit shall expire with the building permit application. Upon written request received prior to expiration, the director may grant renewals of an approval for successive periods of not more than one year each, up to a total of three years. Requests beyond three years are subject to review by the planning commission. Approvals of such renewals shall be in writing and for a specific period. Renewals may be approved with new or modified conditions upon a finding that the circumstances under which the permit was originally approved have substantially changed. Renewal of a permit shall not require public notice or hearing, unless the renewal is subject to new or modified conditions. In order to approve a renewal, the director, or planning commission as applicable, must make the findings required for initial approval. (Ord. 1650 § 3 (Exh. B), 2018)