Portland, OR Environmental Rules: Boat Dock Permits (2026)
Key Facts
- Max new dock size
- 200 sq ft, no adjustments
- Shallow water habitat
- Docks prohibited outright
- Pre-2021 oversized docks
- Must shrink 25% on repair
- Enforcing agency
- Portland Permitting & Development
- Applies in
- River Overlay zones, Willamette River
Summary
New residential floating docks on Portland's Willamette River frontage are capped at 200 square feet with no variances, and shallow water habitat is off-limits to docks entirely.
B. Residential dock standards. The following standards apply to new floating boat docking structures located in a residential zone. 1. The total square footage of the new floating boat docking structure must not exceed 200 square feet. Adjustments are prohibited; and 2. The new floating boat docking structure may not be located within shallow water habitat. Adjustments are prohibited. Modifications are allowed through river review.
Full Breakdown
Portland caps new floating residential docks on the Willamette River at 200 square feet, with no adjustments allowed, and bars them entirely from shallow water habitat that supports fish and wildlife species. Any change beyond routine maintenance requires River Review, the city's land-use permit process for River Overlay zones. Docks that existed before March 1, 2021 and exceed 200 square feet must shrink their floating portion by at least 25% whenever they're replaced or when more than half their combined systems are altered or repaired. Portland Permitting & Development administers and enforces the standard.
Violations & Fines
Unpermitted dock work is a Title 33 violation. PP&D issues written notice under § 33.700.030 and enforces through Chapter 3.30 and Title 22 of the City Code.
Frequently Asked Questions
Do I need a permit for a new dock on my Willamette River property?
Can I keep my existing dock if it's bigger than 200 square feet?
Sources & Official References
Other rules in Portland
Compare Portland to another location·View the Oregon environmental rules overview
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Boat Dock Permits in Nearby Cities
How other cities in Multnomah County handle boat dock permits.