Tree preservation plans are used by property owners, contractors, and others involved with land division and development. In these cases, various municipal codes regulate how many trees must be retained and how many can be removed. These codes are complex, are updated frequently, and are different in every jurisdiction. We help our clients navigate these regulations and comply with the law.

Tree preservation plans are used by property owners, contractors, and others involved with land division and development. In these cases, various municipal codes regulate how many trees must be retained and how many can be removed. These codes are complex, are updated frequently, and are different in every jurisdiction. We help our clients navigate these regulations and comply with the law.


Tree Codes Are Far-reaching

In the City of Portland, tree codes apply to anyone seeking to subdivide a property or develop it. This includes individuals, businesses, construction companies, and architects involved with the project. By develop, we mean building a structure or subdivision, apartment building, or an ADU. Each of these triggers one or more City Code requirements relating to tree protection measures during construction.


Tree Codes Are Far-reaching

In the City of Portland, tree codes apply to anyone seeking to subdivide a property or develop it. This includes individuals, businesses, construction companies, and architects involved with the project. By develop, we mean building a structure or subdivision, apartment building, or an ADU. Each of these triggers one or more City Code requirements relating to tree preservation.

Tree Codes AreFar-reaching

In the City of Portland, tree codes apply to anyone seeking to subdivide a property or develop it. This includes individuals, businesses, construction companies, and architects involved with the project. By develop, we mean building a structure or subdivision, apartment building, or an ADU. Each of these triggers one or more City Code requirements relating to tree preservation.


Requirements Vary

In the City of Portland a land division, property boundary line adjustment or the like will require a professional arborist to develop a tree preservation plan. All trees 6" in diameter and larger must be accounted for. There are various parameters based on the number of trees that are 20" diameter and larger, and requirements regarding the total inches of tree diameter on the property. A Demolition Permit and a Development Permit both trigger additional obligations relating to street tree density and overall tree canopy area, based on the square footage of the property. In addition to 6" trees, there are obligations based on 12" trees, 20" trees, with special requirements for trees 36" and larger.


Requirements Vary

In the City of Portland a land division, property line adjustment or the like will require a professional arborist to develop a tree preservation plan. All trees 6" in diameter and larger must be accounted for. There are various parameters based on the number of trees that are 20" diameter and larger, and requirements regarding the total inches of tree diameter on the property. A Demolition Permit and a Development Permit both trigger additional obligations relating to street tree density and overall tree canopy area, based on the square footage of the property. In addition to 6" trees, there are obligations based on 12" trees, 20" trees, with special requirements for trees 36" and larger.

The Requirements Vary

In the City of Portland a land division, property line adjustment or the like will require a professional arborist to develop a tree preservation plan. All trees 6" in diameter and larger must be accounted for. There are various parameters based on the number of trees that are 20" diameter and larger, and requirements regarding the total inches of tree diameter on the property. A Demolition Permit and a Development Permit both trigger additional obligations relating to street tree density and overall tree canopy area, based on the square footage of the property. In addition to 6" trees, there are obligations based on 12" trees, 20" trees, with special requirements for trees 36" and larger.

We Seek Win-win Solutions

As your Tree Consultants, it is our job to work with all stakeholders — architects, City Planners, builders, and owners — and find a way for you to build what you want on your property while still preserving trees and complying with the law.

We Seek Win-win Solutions

As your Tree Consultants, it is our job to work with all stakeholders — architects, City Planners, builders, and owners — and find a way for you to build what you want on your property while still preserving trees and complying with the law.

We Seek Win-win Solutions

As your Tree Consultants, it is our job to work with all stakeholders — architects, City Planners, builders, and owners — and find a way for you to build what you want on your property while still preserving trees and complying with the law.

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