Site Development Permit

The Site Development Permit authorizes the construction or modification of sanitary sewer, storm sewer, and water quality/quantity facilities.

Depending on the site’s jurisdiction the City or County will be part of the Site Development Permit Process. The cities of Beaverton, Cornelius, Forest Grove, Hillsboro, Sherwood, Tigard, and Tualatin review development plans with regard to sanitary and storm sewer requirements within their jurisdiction. The District reviews development plans with regard to sanitary and storm sewer requirements within unincorporated Washington County, Banks, Durham, Gaston, King City, North Plains.

Limited Development Review (LDR) is an engineering review for minor development projects. This type of review is conducted at the same time as the Environmental Review and has a typical 1-5 day review period. Examples of minor development activities include:

Deck additions,
Exterior modifications to existing structures
Tearing down an existing structure, disconnection from sewer and constructing a replacement dwelling.

We have streamlined our process and no longer require a Limited Development Review form. Instead please continue to fill out the Sensitive Area Pre-Screen Application form (PDF, 319KB).

For any subdivisions or development that will proceed through Land Use, please see the Site Development City Flow Chart (PDF ,481KB) or Site Development County Flow Chart (PDF, 501KB) for details about these processes as well as the information listed below.

Site Development Permit Requirements

Complete, stamped Engineering Plans
Sizing calculations for all utilities and facilities
Landscaping/planting plans for facilities and vegetated corridors
Erosion control plans

Once your project has been submitted and is under review you can check your status of the project at Engineering Plan Review Status or City Plan Review.

Incomplete submittals will be returned without review. Plans will be reviewed within 15 business days if complete, and may require 10 more business days if resubmitted for additional reviews. Please refer to Initial Plan Submittal Requirements (PDF, 119KB).

After initial plans are approved the following items may be required

Cost Estimates for all sanitary and storm sewers, facilities, erosion control, and landscaping/restoration
Performance Assurances (bonds, escrow, etc)
Construction Permit Agreement
Off-site easements
DEQ 1200-C Permit for sites one (1) acre or larger
Copies of any necessary US Army Corps of Engineers (USACE) or Department of State Lands (DSL) permits