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The City of Portland, Oregon

Development Services

From Concept to Construction

Phone: 503-823-7300


1900 SW 4th Ave, Portland, OR 97201

More Contact Info

Site Development/Septic Permits

Site Development Permits

Site Development permits are issued for work related to grading and clearing, tree cutting, landslide repair and subdivision development.

Flood Hazard Regulations and Maps

Regulations for development in flood hazard areas

Fact Sheets

Information on different methods of stormwater management and erosion control including links to the stormwater manual and erosion control manual.