In all these zoned areas, a Zoning Compliance Permit-(changing from reference to Building Permit) is needed for Construction in Zoned Areas.
Zoning Compliance Permit Application
If you think a property has a zoning violation/is not in compliance with current zoning the following is a complaint form that can be given to the Planning Department for follow-up.
Zoning Enforcement Complaint Form
Forest Park, Highland Park, and River Road Variance
aRiver Road (to be coming)