20×16 Deck Cost in Rhode Island
A 20×16 (320 sqft) deck in Rhode Island costs $19,520-$31,360 in mid-tier composite with the state's 1.22× labor multiplier (Northeast). A 16×20 deck (320 sqft) is the canonical 'mid-large' deck — fits a full sectional, a 6-seat dining table, and a grill island. Rhode Island labor 1.22× national.
5 finish tiers — 20×16 in Rhode Island
National $/sqft × Rhode Island's 1.22× labor multiplier × 320 sqft = total installed cost. Materials + labor + standard railing included.
Excludes permit ($240-$592 typical in Rhode Island), demolition (if replacing), and exceptional framing for 42″ frost depth. RI permits $200-340.
20×16 framing notes for Rhode Island
Rhode Island considerations
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FAQ — 20×16 deck in Rhode Island
How much does a 20×16 deck cost in Rhode Island?▾
In Rhode Island, a 20×16 (320 sqft) deck costs $9,920-$15,680 in pressure-treated, $19,520-$31,360 in mid-range composite (Trex Transcend / Fiberon Sanctuary), and $29,440-$42,880 in luxury composite/PVC (TimberTech AZEK / Trex Signature). Numbers reflect Rhode Island's 1.22× labor multiplier on 2026-Q1 retail.
What's the cheapest way to build a 20×16 deck in Rhode Island?▾
Cheapest = ground-level pressure-treated pine with no railings (where exempt under 30″ height) — ~$7,808-$11,712 in Rhode Island. Add stairs + railings + above-grade framing and the build goes to ~$10,931-$15,616. DIY saves 30-50% on labor but requires permit + inspection coordination yourself.
How long does it take to build a 20×16 deck in Rhode Island?▾
Permit timeline in Rhode Island: 2-6 weeks depending on jurisdiction. Construction time for a 20×16: 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 20×16 deck in Rhode Island?▾
IRC R507-compliant framing for a 20×16 deck typically uses 2×8 joists at 16″ OC for spans up to 12 ft, 2×10 joists for spans 12-16 ft. Rhode Island's frost depth is 42″ — footings must extend below that per IRC R403.1.4. Sonotube 10-12″ diameter at 42″ depth is typical. Verify with your local building department.
Is composite worth it for a 20×16 deck in Rhode Island?▾
Over 25 years in Rhode Island: PT pine = ~$11,712 install + ~$24,400 maintenance (stain every 2-3 yr) = $36,112 total. Mid composite = ~$22,643 install + $0 maintenance = $22,643 total. Composite wins by 59-81% over 25-yr lifecycle PLUS better resale value in Rhode Island's market.