10×10 Deck Cost in Delaware
A 10×10 (100 sqft) deck in Delaware costs $4,600-$7,400 in mid-tier composite with the state's 0.92× labor multiplier (South). A 10×10 deck (100 sqft) is the typical entry-level deck — good for a 4-seat dining set with grill space. Delaware labor 0.92× national. Humid Atlantic climate — lean toward PVC or top-tier composite.
5 finish tiers — 10×10 in Delaware
National $/sqft × Delaware's 0.92× labor multiplier × 100 sqft = total installed cost. Materials + labor + standard railing included.
Excludes permit ($105-$259 typical in Delaware), demolition (if replacing), and exceptional framing for 30″ frost depth. DE permits $150-250. New Castle County stricter than southern counties.
10×10 framing notes for Delaware
Delaware considerations
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FAQ — 10×10 deck in Delaware
How much does a 10×10 deck cost in Delaware?▾
In Delaware, a 10×10 (100 sqft) deck costs $2,300-$3,700 in pressure-treated, $4,600-$7,400 in mid-range composite (Trex Transcend / Fiberon Sanctuary), and $6,900-$10,100 in luxury composite/PVC (TimberTech AZEK / Trex Signature). Numbers reflect Delaware's 0.92× labor multiplier on 2026-Q1 retail.
What's the cheapest way to build a 10×10 deck in Delaware?▾
Cheapest = ground-level pressure-treated pine with no railings (where exempt under 30″ height) — ~$1,840-$2,760 in Delaware. Add stairs + railings + above-grade framing and the build goes to ~$2,576-$3,680. DIY saves 30-50% on labor but requires permit + inspection coordination yourself.
How long does it take to build a 10×10 deck in Delaware?▾
Permit timeline in Delaware: 2-6 weeks depending on jurisdiction. Construction time for a 10×10: pro crew = 3-5 days for framing + boards + railings + stairs. DIY = 2-3 weekends for experienced DIYer. Allow extra time for permit approval + inspections.
What framing do I need for a 10×10 deck in Delaware?▾
IRC R507-compliant framing for a 10×10 deck typically uses 2×8 joists at 16″ OC for spans up to 12 ft, 2×10 joists for spans 12-16 ft. Delaware's frost depth is 30″ — footings must extend below that per IRC R403.1.4. Sonotube 10-12″ diameter at 30″ depth is typical. Verify with your local building department.
Is composite worth it for a 10×10 deck in Delaware?▾
Over 25 years in Delaware: PT pine = ~$2,760 install + ~$5,750 maintenance (stain every 2-3 yr) = $8,510 total. Mid composite = ~$5,336 install + $0 maintenance = $5,336 total. Composite wins by 59-81% over 25-yr lifecycle PLUS better resale value in Delaware's market.