Allentown, PA · 2026 cost guide
How much does a deck cost in Allentown?
In Allentown, a deck costs about $4,900–$19,500 in 2026 for a 320 sq ft deck, from pressure-treated to composite — roughly $15.3–$61.2 per square foot. That’s in line with the Pennsylvania average.
Estimate your Allentown project with the Deck Cost Calculator →
Allentown cost breakdown
| Allentown typical range | $4,900–$19,500 |
| Allentown per square foot | $15.3–$61.2 |
| Pennsylvania state average | $4,900–$19,500 |
| Versus Pennsylvania average | in line with average |
What’s different about Allentown
Allentown in the Lehigh Valley has moderate labor costs, with snowy winters and freeze-thaw cycles driving durable exterior construction.
- Footings have to reach below the frost line, so deeper excavation adds cost.
How the cost is built
Deck cost depends on size, decking material (pressure-treated pine is cheapest; composite and PVC are mid-range; tropical hardwood is premium), and structural extras like railings, stairs, and elevated footings. Permits and ledger flashing add cost on attached decks.
Frequently asked questions
How much does a deck cost in Allentown?
In Allentown, a deck costs about $4,900 to $19,500 in 2026 for a 320 sq ft deck, from pressure-treated to composite — roughly 15.3–61.2 per square foot. That's in line with the Pennsylvania average, reflecting local labor and permit costs.
What affects the cost of a deck in Allentown?
Allentown in the Lehigh Valley has moderate labor costs, with snowy winters and freeze-thaw cycles driving durable exterior construction. Footings have to reach below the frost line, so deeper excavation adds cost.
How can I get an accurate deck building estimate in Allentown?
Use the free Deck Cost Calculator to plug in your real measurements, then collect two or three local Allentown quotes to compare. Prices vary by neighborhood, access, and project complexity.
Deck building cost in other Pennsylvania metros
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Open calculator →The Allentown figure scales the Pennsylvania cost range by a local metro index, then adjusts for the city’s labor market and climate. A 2026 planning estimate, not a quote — get local bids. See our methodology.