Site Grading Permit
The City’s adopted grading code is Appendix J of the 2010 Oregon Structural Specialty Code. This code provides various guidelines to promote stable excavations and fills and reduce the potential for long term adverse drainage associated with grading activities. Setbacks are included to avoid encroachment into sensitive areas or adjacent properties. To help ensure that these standards are met, the code grants the City Building Official authority to require a grading permit.
Grading Permit Process:
When is a Grading Permit needed?
A grading permit is required if any of the following apply to a proposed scope of work:
- An excavation and/or fill (or combination) over 50 cubic yards
- A two foot or greater change to the existing grade/elevation.
- Any grading that affects a natural or man-made drainageway.
- Any grading in a mapped natural resource area (wetland, riparian corridor, significant vegetation)
- Any grading in a mapped natural hazard area (landslide zones, slopes greater than 15%)
Note: A grading permit may be required in addition to an Erosion Control Permit, but for convenience they are issued as a single “EXC” permit.
What activities do not require a Grading Permit?
Earthwork activities that do not require a grading permit include mining, quarrying, wells, utility trenches, geotechnical investigations, and structure footings. However, placement of excavated material from these activities in other areas may require a grading permit. If uncertain, please contact Development Services.
What is the Cost of the Permit?
The Development Services Division Fee Schedule describes the cost of grading permits.
How Do I Apply?
Apply online at www.corvallispermits.com. More information on the application process can be found at Apply for a Permit | Corvallis Oregon.
Reference Documents
- Grading Code Details (PDF) – Detail drawings of key grading code requirements.
- Oregon Drainage Law (PDF) - A civil guidance document that provides some basic grading rules for land owners, with a focus on avoiding drainage impacts.
- Land Development Code (PDF) – The Corvallis Land Development Code includes Hillside Development Standards related to site grading (see Chapter 4.14).
- Walls Reference Sheet (PDF) – A guide to requirements related to exterior walls.
