When does the Zoning Code require it?
Landscaping may be required in a variety of situations, including the following:
- New residential and commercial development;
- Parking areas;
- Exterior development areas (exterior storage, display or work areas);
- Screening of mechanical equipment;
- Drive-through areas;
- Mitigation as a result of an Adjustment Review, Environmental Review, or other Land Use Review; and/or
- Other regulations relating to landscaping.
Note: Tree preservation and planting requirements are found in Title 11, Trees.
Where are the landscaping and screening regulations found in the Zoning Code?
Landscaping regulations are located throughout the Zoning Code, in the base zone, overlay zone, plan district, or other regulation. Specific landscaping regulations that apply to a site depend on the base zone, overlay zone, plan district and the type of development proposed.
In some circumstances, the landscaping requirements are stated directly in the base zone, overlay zone, plan district or other regulation.
However, in most cases, the base zone, overlay zone, plan district or other regulation references the landscaping requirements in Chapter 33.248, Landscaping and Screening. In turn, parts of Chapter 33.248 refer to other publications and guides, described as follows:
Other publications referred to in the Zoning Code
Depending on the situation, different types of plants may be planted on a site. The Zoning Code refers to several plant lists. These lists are referenced within the Zoning Code. If any of the Zoning Code provisions that apply to a site refer to one of these lists, you must view the publication to obtain the most accurate detail regarding the landscaping requirements for the site.
Portland Plant List - This publication provides a list of native trees, shrubs and ground cover. It also includes a list of plants that are designated Nuisance or Prohibited plants. Many of the landscaping requirements prohibit the use of Nuisance or Prohibited plants. Also, mitigation and replacement requirements in Environmental zones require that the plants be listed as Native on the Portland Plant List.
Street Tree List - Information on recommended trees, permitting, and maintenance for trees planted in the public right-of-way.
Tree and Landscaping Manual - The Tree and Landscaping Manual is a publication that has been compiled to provide detailed guidance on how to address landscaping requirements. In addition, the Tree and Landscaping Manual provides information about landscaping regulations in the Zoning Code, including interior parking lot landscaping.
- Landscaping: Section 1 - Landscaping Regulations and How to Apply Them)
This section of the manual includes the Table of Contents, what rules apply, how to use the Manual, and a Landscaping Calculations Worksheet.
- Landscaping: Section 2 - Frequently Asked Questions
This section of the manual includes Frequently Asked Questions regarding landscaping requirements, plans, permits, inspections and tree-cutting permits.
- Landscaping: Section 3 - Landscaping Standards L1, L2, L3, L4, L5, P1
This section of the Manual outlines tree, shrub and groundcover requirements to meet the different landscaping standards of L1, L2, L3, L4, L5, P1.
- Landscaping: Section 4 - Maintenance, Irrigation, Protection, etc.
This section of the Manual includes information on maintenance of plantings, tree protection requirements, and descriptions of the different plant lists.
- Landscaping: Section 5 - Plant Materials and Suggested Plant Lists
This section of the Manual includes suggested species of trees, shrubs, and ground cover plants to meet landscaping requirements. These lists are intended to assist you in selecting plant materials, but projects are not limited to plants on the lists.
Stormwater Management Manual - For landscaping in association with stormwater management facilities and Chapter 17.38 of the Portland City Code, see the Stormwater Management Manual. This document is maintained by the Bureau of Environmental Services.
Questions? For further assistance with the land use and zoning regulations that apply to your site, please call us at (503) 823-7526, or visit Planning and Zoning Staff in the Development Services Center.