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Planning and Sustainability

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100s Base Zones

The 100 series contains the base zone chapters. These chapters state which uses are allowed in each zone. They also state which uses are allowed in limited situations, which are conditional uses, and which are prohibited. The general development standards for each base zone are also included. The development standards include requirements such as maximum heights and required setbacks.


Heartbleed Security Notice

A serious security vulnerability known as "Heartbleed" was recently discovered in OpenSSL, a popular software library commonly used by many websites on the internet to encrypt communication between a user's computer and a web server.

PortlandOregon.gov is NOT affected by this vulnerability as it does not use the OpenSSL software library. Please rest assured we are dedicated to protecting your security on this website.