City Code Zoning Group
Overlay zones consist of regulations that address specific subjects that may be applicable in a variety of areas in the City. Plan districts consist of regulations that have been tailored to a specific area of the City. Both overlay zones and plan districts are applied in conjunction with a base zone and modify the regulations of the base zone. The Official Zoning Maps identify overlay zones and plan districts as well as the base zones and other information.
33.400 Aircraft Landing Zone (PDF - 265.25 KB)
33.405 Alternative Design Density Overlay Zone (PDF - 96.22 KB)
33.410 Buffer Zone (PDF - 248.32 KB)
33.415 Centers Main Street Overlay Zone (PDF - 284.91 KB)
33.418 Constrained Sites Overlay Zone (PDF - 114.1 KB)
33.420 Design Overlay Zone (PDF - 934.74 KB)
33.430 Environmental Zones (PDF - 2.59 MB)
33.435 Future Urban Zone (PDF - 107.07 KB)
33.440 Greenway Overlay Zones (PDF - 1.22 MB)
33.445 Historic Resource Overlay Zone (PDF - 672.78 KB)
33.450 Light Rail Transit Station Zone (PDF - 95.16 KB)
33.453 Interim Forest Review (PDF - 101.74 KB)
33.455 Main Street Node Overlay Zone (PDF - 97.37 KB)
33.460 Main Street Corridor Overlay Zone (PDF - 78.47 KB)
33.465 Pleasant Valley Natural Resources Overlay Zone (PDF - 412.08 KB)
33.470 Portland International Airport Noise Impact Zone (PDF - 147.75 KB)
33.471 Prime Industrial Overlay Zone (PDF - 114.83 KB)
33.475 River Overlay Zones (PDF - 2.55 MB)
33.480 Scenic Resource Zone (PDF - 481.83 KB)