Deck Installation Cost in Portland, OR
Based on 1,315 deck installation building permits filed in Portland between 2017 and 2026, the typical declared project value is $18,000, with most landing between $8,000 and $30,000. These are real records from Portland's public building-permit data, declared job values, not contractor estimates or AI guesses.
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Deck Installation values over time in Portland
Median declared value moved from $16,000 in 2021 to $15,000 in 2026, down 6% over that span. Each year below is computed from the filings that actually cleared in Portland.
Recent deck installation permits in Portland
Actual filings from Portland's public permit records. Declared job values, not final paid prices.
| Filed | Declared value | Work described |
|---|---|---|
| 2026-06-15 | $8,500 | SINGLE PDF - REMOVE AND REPLACE DECK, REPLACE RAILING WITH ALUMINUM AND STAINLESS CABLE RA |
| 2026-06-09 | $20,000 | SINGLE PDF - REPLACE AND EXTEND DECK AND ADD STAIRS TO REAR ELEVATION |
| 2026-06-04 | $11,400 | SINGLEPDF - ADDED VALUE REVISION TO REPLACE EXISTING DECK |
| 2026-06-03 | $24,000 | *SINGLE PDF* Seven existing deck columns to be repaired. The bases have rotted and need to |
| 2026-05-28 | $9,900 | SINGLE PDF - RETROACTIVE PERMIT FOR DECK AND STAIRS ON EAST ELEVATION**REFER TO 25-023801- |
| 2026-05-26 | $29,000 | SINGLE PDF- 134 SF ADDITION OF LIVING SPACE. NEW SPACE TO CREATE ANNEX OFF KITCHEN AND EX |
| 2026-05-21 | $3,500 | SINGLE PDF - CHANGE OF USE/OCCUPANCY TO RESIDENTIAL TREATMENT HOME FOR 5 OR FEWER PERSONS |
| 2026-05-19 | $10,000 | SINGLE PDF CONVERT 2ND LEVEL OF EXISTING SHED TO AN ADU. FRAMING, REBUILD STAIRS AND DECK. |
| 2026-05-18 | $15,000 | Single PDF* Replace existing deck with new Composite Trex Deck, extending side of deck by |
| 2026-05-01 | $27,700 | SINGLE PDF REPLACING EXISTING DECK WITH NEW 390 SQFT DECK. COVER, STAIRS, RAILING, FOOTIN |
| 2026-04-30 | $23,411 | SINGLE PDF - ENCLOSE EXISTING PORCH TO CREATE ADDITIONAL LIVING SPACE, BUILD DECK AT REAR |
| 2026-04-30 | $75,000 | SINGLE PDF - REPLACE EXISTING DECK ON REAR ELEVATION WITH A NEW DECK OF THE SAME SIZE |
| 2026-04-28 | $12,500 | SINGLE PDF - 2ND STORY DECK EXTENSION |
| 2026-04-27 | $35,000 | SINGLE PDF - NEW 362 SF REAR DECK AND 120 SF PATIO COVER |
| 2026-04-22 | $10,800 | SINGLE PDF - RETROACTIVE PERMIT FOR AN ENCLOSED 324 SF UNFINISHED STORAGE ROOM ON THE EXTE |
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Add your price →How to read these numbers
A permit's declared value is the job cost the owner or contractor stated when they pulled the permit. It tracks the real cost of the work but can run a bit under what was actually paid, since it often leaves out some labor and finish costs. Treat the range as a grounded starting point. What deck installation actually costs in Portland comes down to home size, materials, and scope.
Where this comes from
Every figure is pulled from Portland's public building-permit records and classified by the work described. Nothing is estimated or AI-generated. How the data works. The moment a Portland homeowner adds a real receipt, this page upgrades to show what neighbors actually paid next to these permit values.
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