If your deck went up in the '80s or '90s — and across Centennial, Littleton, and the rest of the south metro, a huge share did — you're not researching a luxury. You're pricing overdue maintenance on the most-used room of the house. Here's what deck replacement actually costs across the Denver metro in 2026, and the one question that swings the price by tens of thousands of dollars.
The one question: replace, or re-deck?
Two very different projects hide under the phrase "deck replacement":
- Re-decking (resurfacing). The framing underneath is sound, so the old boards and railings come off and a new surface goes on over the structure you already own. Typical Denver-metro range: $20–$35 per square foot installed for capped composite.
- Full replacement. Teardown to grade, haul-off, new engineered footings and framing, new surface and code-current railings. This is new-deck pricing plus demolition: $40–$70 per square foot for composite, plus roughly $1,500–$3,500 for teardown and disposal, depending on size and access.
On a typical 350 sq ft deck, that's the difference between roughly $7,000–$12,000 and $16,000–$28,000. Which side you land on isn't a preference — it's a structural fact, and it's why every replacement quote we give starts with a real inspection: ledger, footings, posts, joists, hardware. If the bones are good, we say so and quote the cheaper job.
What pushes a replacement toward the top of the range
- Height. Walk-out and second-story decks carry taller posts, bigger footings, and engineered railing loads. Expect elevated builds to run 15–30% above a ground-level deck of the same size — our second-story deck cost guide breaks this down.
- What the old deck is hiding. Rotted rim joists, an unflashed ledger, or footings poured shallow of frost depth get discovered at teardown, not before. A builder who inspected first will have warned you; one who bid off a photo will change-order you.
- Code, since your last deck. Railing height, baluster spacing, stair geometry, and ledger attachment have all tightened since most metro decks were built. A replacement brings everything current — that's a feature, and it's permitted and inspected like one.
- Add-ons. Stairs, premium railing, and shade structures price the same as on a new build — our stairs and railings cost guide has those numbers.
Is replacement worth it?
Against the alternative — annual patch-and-stain triage on a deck that's structurally done — almost always. A capped-composite rebuild resets the clock by decades, ends the maintenance cycle, and reads as a straight asset on an inspection report instead of a red flag. And unlike the original builder-grade deck, a replacement is designed for how you actually use the space, not for the cheapest possible line on a spec sheet.
Want a planning number for your square footage before talking to anyone? Run it through our deck cost calculator. Ready for a real one? We'll come look at what you've got — if it's a re-deck, we'll tell you that too.
