Search within This 18.5.7.070 Expiration of Tree Removal Permits This section is included in your selections. Tree removal permits shall remain valid for a period of 18 months from the date of issuance or date of final decision by a hearing body, if applicable. A 30-day extension shall be automatically granted by the Staff Advisor if requested in writing before the expiration of the permit. Permits that have lapsed are void. Trees removed after a tree removal permit has expired shall be considered a violation of this chapter.