10×8 Deck Cost in New Hampshire
A 10×8 (80 sqft) deck in New Hampshire costs $4,880-$7,840 in mid-tier composite with the state's 1.22× labor multiplier (Northeast). An 8×10 deck (80 sqft) is the smallest practical deck size — barely fits a 4-person bistro set. Most affordable build in this list. New Hampshire labor 1.22× national. Frost depth 48″.
5 finish tiers — 10×8 in New Hampshire
National $/sqft × New Hampshire's 1.22× labor multiplier × 80 sqft = total installed cost. Materials + labor + standard railing included.
Excludes permit ($240-$592 typical in New Hampshire), demolition (if replacing), and exceptional framing for 48″ frost depth. NH permits $200-340.
10×8 framing notes for New Hampshire
New Hampshire considerations
Get a precise quote for your 10×8 deck in New Hampshire
Open the Deck Cost Calculator with NH pre-selected and dial in your exact size, framing, material, and railing choices.
FAQ — 10×8 deck in New Hampshire
How much does a 10×8 deck cost in New Hampshire?▾
In New Hampshire, a 10×8 (80 sqft) deck costs $2,480-$3,920 in pressure-treated, $4,880-$7,840 in mid-range composite (Trex Transcend / Fiberon Sanctuary), and $7,360-$10,720 in luxury composite/PVC (TimberTech AZEK / Trex Signature). Numbers reflect New Hampshire's 1.22× labor multiplier on 2026-Q1 retail.
What's the cheapest way to build a 10×8 deck in New Hampshire?▾
Cheapest = ground-level pressure-treated pine with no railings (where exempt under 30″ height) — ~$1,952-$2,928 in New Hampshire. Add stairs + railings + above-grade framing and the build goes to ~$2,733-$3,904. DIY saves 30-50% on labor but requires permit + inspection coordination yourself.
How long does it take to build a 10×8 deck in New Hampshire?▾
Permit timeline in New Hampshire: 2-6 weeks depending on jurisdiction. Construction time for a 10×8: 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 10×8 deck in New Hampshire?▾
IRC R507-compliant framing for a 10×8 deck typically uses 2×8 joists at 16″ OC for spans up to 12 ft, 2×10 joists for spans 12-16 ft. New Hampshire's frost depth is 48″ — footings must extend below that per IRC R403.1.4. Deep frost requires more concrete per footing — budget extra for sonotubes + concrete. Verify with your local building department.
Is composite worth it for a 10×8 deck in New Hampshire?▾
Over 25 years in New Hampshire: PT pine = ~$2,928 install + ~$6,100 maintenance (stain every 2-3 yr) = $9,028 total. Mid composite = ~$5,661 install + $0 maintenance = $5,661 total. Composite wins by 59-81% over 25-yr lifecycle PLUS better resale value in New Hampshire's market.