Covered Decks in Portland, OR: Deck Roofs, Covers & Permits

Last updated October 9, 2026

Covered decks in Portland

A covered deck is a deck with a roof over it, which in Portland’s wet months is the difference between a deck you look at and one you can sit out on. A cover can go over a deck you already have or be built with a new one. Tell us about the deck and a local deck contractor will give you a free quote for the cover, the deck or both.

Attached or freestanding?

An attached deck cover is fastened to the house at one side and carried on posts at the other, usually as an extension of the roof line or just below it. It shares the house wall, so how it connects to the house and sheds water away from it are the details to ask about. A freestanding cover stands on its own posts and beams, so it can sit over a deck away from the house, but it needs its own footings throughout.

Whichever you choose, the cover is a structure in its own right: the deck below has to be able to carry its posts, or the posts need footings of their own.

Deck cover permits in Oregon

Covers have their own line in the state’s permit exemptions, separate from the 30-inch rule for decks. Chapter 1 of the 2026 Oregon Residential Specialty Code (R105.2), mandatory since October 1, 2026, exempts:

“Deck, patio or porch covers as defined in Section BF102, not more than 200 square feet (18.58 m2) in floor area and not closer than 3 feet (914 mm) to lot lines.”

So a cover larger than 200 square feet, or one within 3 feet of a property line, needs a building permit, even over a deck low enough not to need one. Cities then add their own layers:

• Portland: the City’s deck guidance says of covered decks, “Regardless of height, you will need to follow additional zoning requirements,” and its plan requirements state that covered decks must follow setback rules.
• Oregon City: permits from both the Planning and Building divisions are required for decks covered by a roof or canopy over 200 square feet or more. The city publishes a separate guide to building a cover for a deck or patio. See deck builders in Oregon City.
• Tigard: the low-deck setback allowance applies only to unroofed decks, and the City’s exemption for covered porches and decks requires them to stay at least 3 feet from the property lines.

Our guide to deck permit rules covers the rest of the metro.

Roof options

Most deck covers use one of three kinds of roof:

• a solid roof, framed and roofed to match or complement the house;
• translucent panels, such as polycarbonate, which keep the rain off but let light through to the windows behind the deck;
• a louvered system, whose slats open for sun and close for rain.

The choice changes the framing, the drainage and the price, so it is worth deciding before you ask for a quote; our page on what a deck costs explains what else moves a deck’s price. If the deck under the cover is due for work too, see deck repair and replacement.