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A 16x16 deck covers 256 square feet and costs about $4,506 – $7,040 installed in pressure-treated pine, up to $9,830 – $15,360 in composite. It takes about 38 decking boards at 16 ft, 13 joists, 3 footings and 48 linear feet of railing.
| Material | Installed cost |
|---|---|
| Pressure-Treated Pine | $4,506 – $7,040 |
| Cedar | $6,554 – $10,240 |
| Redwood | $7,782 – $12,160 |
| Composite (Trex/TimberTech) | $9,830 – $15,360 |
| PVC / Cellular | $11,878 – $18,560 |
| Ipe / Tropical Hardwood | $13,312 – $20,800 |
A 16x16 deck is 256 square feet. In pressure-treated pine, expect roughly $4,506 – $7,040 installed. Cedar runs about $6,554 – $10,240 and composite about $9,830 – $15,360. Building it yourself typically removes 40 to 55 percent of those figures, because labour is around half of a finished deck price.
Laying boards across the 16 ft direction, you need 35 rows — that is 560 linear feet of decking, or about 38 boards at 16 ft with a waste allowance. A 16 ft board crosses the deck in one piece, so there are no butt joints.
About 3, one under each post, with posts at no more than 8 feet along the beam. That is roughly 0.37 cubic yards of concrete for 12 inch tubes poured 42 inches below grade — around 17 eighty-pound bags. Your own frost depth sets the real number and is not negotiable.