Deck Construction Cost Calculator
Decks must withstand extreme weather and strict municipal structural codes. Calculate accurate estimates for pressure-treated framing, composite boards, Sonotube footings, and railings.
Custom Outdoor Living Deck CompletionCapped polymer composite decking, matte black powder-coated aluminum baluster railing, integrated stair tread lights, and fire lounge zone.
Engineered Foundation & Substructure FramingPoured concrete frost footings, ground-contact pressure treated 2x10 joists, Simpson Strong-Tie galvanized hurricane ties, and ledger flashing.
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Deck Material Comparison
| Material | Maintenance | Installed Cost / sq ft |
|---|---|---|
| Pressure-Treated Pine | Stain / seal every 2 years | $24 – $36 / sq ft |
| Capped Composite (Trex) | Soap & water wash only | $42 – $62 / sq ft |
| Exotic Hardwood (Ipe) | Periodic oiling | $65 – $95 / sq ft |
Installed cost ranges are national-baseline figures. The calculator adjusts for your metro labor market, elevation, and railing choices, so metro-loaded totals can land higher.
Structural Watchouts
- Ledger Board Flashing: Leaking behind the house ledger rots your foundation sill plate. Proper Z-flashing is mandatory.
- Frost Depth Pier Footings: Concrete footings must extend below your municipal frost line to prevent deck heaving.
- Structural Fasteners: Pressure-treated chemicals corrode standard screws; use 316 stainless steel or approved coated fasteners.