Deck Cost Guide: What a New Deck Actually Costs in 2026
Real-world pricing by material, plus the add-ons that don't show up in the base square-foot rate.
Deck quotes vary more by material choice than almost any other outdoor project, and the base per-square-foot rate often hides two of the biggest cost drivers: railing and stairs, which are priced separately by linear foot, not folded into the deck surface cost.
Typical Cost Ranges by Finish Level
| Finish Level | Cost per sq ft | 300 sq ft deck |
|---|
| Budget | $14–$22 | ~$4,200–$6,600 |
| Mid-Range | $34–$38 | ~$10,200–$11,400 |
| High-End | $68–$75 | ~$20,400–$22,500 |
These ranges cover the deck surface and structure. Railing, stairs, and any permit fees are typically additional — see below.
What Actually Drives the Price
- Decking material — Pressure-treated pine is the budget standard. Composite decking (Trex and similar) roughly doubles material cost but needs far less ongoing maintenance — no staining or sealing.
- Railing and stairs — Priced per linear foot, separate from the deck surface. A deck with a lot of railing (wraparound, multiple stair sections) can add meaningfully to the total even at a modest square footage.
- Height off grade — A deck more than a couple feet off the ground typically needs deeper footings and often triggers stricter permit and railing-height requirements, which adds both material and labor cost.
- Ground conditions — Sloped yards, poor soil, or difficult footing access can add unexpected labor before the deck structure itself even starts.
- Local permit requirements — Most jurisdictions require a permit for an attached deck; the fee and inspection process add both cost and time to the schedule.
Frequently Asked Questions
- Is composite decking worth the extra cost?
- For most homeowners planning to stay in the home long-term, yes — the lack of annual staining/sealing offsets a meaningful part of the higher upfront cost over the years, though pressure-treated wood remains a perfectly solid choice if minimizing upfront cost matters more.
- Do I need a permit to build a deck?
- In most areas, yes, especially for an attached deck of any real size — but requirements vary by local jurisdiction, so check with your building department before starting.
- How long does building a deck take?
- A straightforward deck typically takes 1–2 weeks once permits are approved. Complex shapes, multiple levels, or difficult ground conditions extend that.