What a Deck Actually Costs in the Triangle
Across the Raleigh-Durham market, a typical full deck-build job runs about $7,500 to $14,000. That covers the most common scenario: a single-level attached deck somewhere between 200 and 300 square feet, built by a licensed crew with materials, labor, footings, and basic railing included. Smaller platform decks can come in under that range, and larger or multi-level builds in premium materials can run well above it. The rest of this guide breaks down why.
Cost by Size and Material
Size and decking material are the two biggest levers on price. Framing, footings, and labor scale with square footage; the decking and railing material determines how much per square foot you're paying on top of that structure. Here's roughly how it shakes out for a straightforward, single-level attached deck:
| Size | Pressure-Treated | Cedar | Composite |
|---|---|---|---|
| Small (100–150 sq ft) | $4,000–$7,000 | $5,500–$8,500 | $7,000–$10,500 |
| Mid-size (200–300 sq ft) | $7,500–$10,500 | $9,500–$13,000 | $11,000–$14,500 |
| Large (350–400+ sq ft) | $11,500–$15,500 | $14,000–$18,500 | $16,500–$22,000+ |
Pressure-treated southern yellow pine is the budget baseline in this region because it's produced and stocked locally and holds up to Triangle humidity when properly sealed. Cedar costs more up front and needs more upkeep here than in drier climates, since our summers are humid enough that unsealed cedar can gray and check faster than homeowners expect. Composite (Trex, TimberTech, and similar) costs the most initially but skips the annual staining that pressure-treated and cedar decks need, which matters if you don't want a recurring maintenance job.
What Pushes a Job to the Top of the Range
Within any size and material combination, a few things reliably add cost:
- Elevation: A deck more than a few feet off the ground needs taller posts, deeper or additional footings, and often engineered plans. Second-story decks on sloped Triangle lots (common in areas like North Raleigh, Cary, and parts of Durham near the creeks) routinely add several thousand dollars over a ground-level build of the same footprint.
- Stairs: A single stair run typically adds somewhere in the $1,000–$3,000 range depending on how many steps, width, and whether the stringers need to match a composite or cedar finish.
- Railings: Basic pressure-treated railing runs roughly $15–$25 per linear foot installed. Composite, aluminum, or cable railing systems run $40–$90+ per linear foot. A deck that needs 60+ linear feet of railing (common on multi-side or wraparound decks) can add several thousand dollars on its own.
- Site access: Backyards with tight side-yard access, mature trees, or a slope that requires extra excavation add labor time that shows up in the final number.
Permits and Inspections: Raleigh vs. Durham
Permit rules differ slightly by jurisdiction, and skipping a required permit is a real risk here — unpermitted decks routinely surface as problems during home sale inspections.
In Durham, freestanding decks not more than 30 inches above grade are exempt from a building permit per NC Residential Code R105.2