20×14 Deck Cost in Oregon
A 20×14 (280 sqft) deck in Oregon costs $17,920-$28,560 in mid-tier composite with the state's 1.28× labor multiplier (West). A 14×20 deck (280 sqft) accommodates dining + lounge zones — popular mid-size build. Oregon labor 1.28× national. Pacific Northwest rain + moss favor composite over PT.
5 finish tiers — 20×14 in Oregon
National $/sqft × Oregon's 1.28× labor multiplier × 280 sqft = total installed cost. Materials + labor + standard railing included.
Excludes permit ($218-$537 typical in Oregon), demolition (if replacing), and exceptional framing for 18″ frost depth. OR permits $250-380. Coastal salt-air notes.
20×14 framing notes for Oregon
Oregon considerations
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FAQ — 20×14 deck in Oregon
How much does a 20×14 deck cost in Oregon?▾
In Oregon, a 20×14 (280 sqft) deck costs $8,960-$14,280 in pressure-treated, $17,920-$28,560 in mid-range composite (Trex Transcend / Fiberon Sanctuary), and $26,880-$39,480 in luxury composite/PVC (TimberTech AZEK / Trex Signature). Numbers reflect Oregon's 1.28× labor multiplier on 2026-Q1 retail.
What's the cheapest way to build a 20×14 deck in Oregon?▾
Cheapest = ground-level pressure-treated pine with no railings (where exempt under 30″ height) — ~$7,168-$10,752 in Oregon. Add stairs + railings + above-grade framing and the build goes to ~$10,035-$14,336. DIY saves 30-50% on labor but requires permit + inspection coordination yourself.
How long does it take to build a 20×14 deck in Oregon?▾
Permit timeline in Oregon: 2-6 weeks depending on jurisdiction. Construction time for a 20×14: pro crew = 5-8 days for framing + boards + railings + stairs. DIY = 3-5 weekends for experienced DIYer. Allow extra time for permit approval + inspections.
What framing do I need for a 20×14 deck in Oregon?▾
IRC R507-compliant framing for a 20×14 deck typically uses 2×8 joists at 16″ OC for spans up to 12 ft, 2×10 joists for spans 12-16 ft. Oregon's frost depth is 18″ — footings must extend below that per IRC R403.1.4. Sonotube 10-12″ diameter at 18″ depth is typical. Verify with your local building department.
Is composite worth it for a 20×14 deck in Oregon?▾
Over 25 years in Oregon: PT pine = ~$10,752 install + ~$22,400 maintenance (stain every 2-3 yr) = $33,152 total. Mid composite = ~$20,787 install + $0 maintenance = $20,787 total. Composite wins by 59-81% over 25-yr lifecycle PLUS better resale value in Oregon's market.