When is a Permit Required? Share Written By Alyssa Eazell Tags 2021-04-09 Check with City Hall before building or remodeling any structure. Call City Hall at (714) 998-1500. City Hall is located at: 17855 Santiago Blvd. Villa Park, CA 92861 See below for specific department hours: The Building Department is open Monday, Wednesday, and Friday from 8am-11am or you can email permits@villapark.org. The Planning Department is open Monday and Wednesday from 8am-2pm or you can email ray@villapark.org or kaden@villapark.org. The Engineering Department is open Monday, Wednesday, and Friday from 8am-12pm or you can email mahrooz@villapark.org. CLICK HERE FOR A HANDOUT ON WHEN A PERMIT IS REQUIRED.