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The Corvallis Public Works Department is the lead agency for flooding in Corvallis. Local area flooding impacts can be projected based upon historical river levels.

Corvallis is nestled in the heart of Oregon's Willamette Valley, within 90 minutes of the bustling Portland metropolitan area, the rugged beauty of the Cascade Mountains, and the spectacular Oregon Coast. Corvallis has a residential population of 60,408 per 2024 population estimate and is home to Oregon State University.

Site plans - should include:

When is an Erosion Prevention and Sediment Control (EPSC) Permit Needed?

Permits are required for all construction sites that disturb 2,000 square feet or more of land surface. Land disturbance includes any activity that exposes soil, including but not limited to grading, excavating, filling, vegetation removal, or logging.

What is the Cost of the Permit?

When is an Excavation & Grading Permit Needed?

When is a Street Cut Permit Needed?

A street cut permit authorizes a registered, bonded contractor to excavate in a public street or alley to access a public utility line. The review and issuance of these permits allows City staff to assess the need for the street cut, ensure that the contractor can perform the work in a manner consistent with City standards, impose traffic control standards if necessary, specify backfilling requirements, and outline City specifications for the patching process.

When is a Manufactured Dwelling Permit Needed?

A permit is required whenever a manufactured dwelling is proposed to be placed or replaced in a manufactured dwelling park, manufactured dwelling subdivision, or in a residential zone. A permit may also be required for altering, repairing or converting a manufactured dwelling, installing earthquake resistant bracing or constructing a manufactured dwelling accessory structure.

When is a Permit Needed to Occupy the Right-of-Way?

Permits to occupy public right-of-way are generally issued to allow either:

When is a Mechanical Permit Needed?

Mechanical permits are required for the installation, alteration, repair, or replacement of mechanical systems or devices, which may include heating, ventilating, cooling and refrigeration systems, incinerators, chimneys and vents, ductwork, gas piping, or other miscellaneous heat-producing and/or associated appliances.

The following are some examples of when mechanical permits are required. This information is not all-inclusive, so please check with Development Services staff to discuss the scope of your project.