A permit expires
1. In two years from the date of its issuance
2. If no work has been started within six months from its issuance
3. Work has started but stopped for over six months.
However, within 30 days of its expiration, an extension of time to extend a permit may be filed with the Department using either modification Request for Modification Form 41a or Request for Modification Form 42 . The request shall be filed with the inspection district supervisor if no work has been started. If the permit has expired and the work has started, the request shall be filed with any plan check office.