Building a deck in Portland involves more paperwork than most homeowners expect, and the structural requirements are stricter than they were ten years ago. This is not a complaint. The current IRC deck code produces decks that are safer and longer-lasting than what was being built in the 1990s. But it does mean that the permit process needs to be part of the plan from the beginning.

What the permit covers and why it matters

A deck permit in Portland requires a site plan showing the deck footprint relative to property lines, a framing plan with joist and beam sizing, and a footing detail. The permit triggers a framing inspection before decking goes down and a final inspection at completion. Unpermitted decks are a liability when you sell the house and can affect your homeowner's insurance. We pull the permit on every deck we build.

Footing depth and frost requirements

Portland's frost depth is 12 inches, but we dig post footings to 18 inches as a standard practice. Footings that are too shallow heave over time, which causes the deck to move and the ledger connection to work loose. We use tube forms and pour concrete footings on every build. We do not use precast deck blocks, which are not code-compliant for attached decks in Portland.

Material choices: cedar vs. Composite

Clear-grade western red cedar is our preferred decking material for most builds. It is regional, it weathers predictably, and it can be refinished. Composite decking (we install Trex Transcend) is a reasonable choice for clients who want a low-maintenance surface. The framing is always pressure-treated regardless of the decking surface. We do not install composite decking over existing framing that has not been inspected and confirmed to be structurally sound.

Timeline from permit to completion

From the time we submit a permit application to the time the deck is complete, a typical project runs eight to twelve weeks. Permit approval is currently running four to six weeks at Portland's Bureau of Development Services. Construction, once the permit is in hand, takes one to two weeks for a standard deck. If you want a deck ready for late summer, starting the permit process in July gives you a realistic chance of finishing before September.

If you are planning a deck build this summer, the time to start is now. We prepare the permit drawings, submit on your behalf, and schedule construction to follow approval. Call us at ((503) 842-7190 or use the contact form to get started.