If you’ve already decided composite decking is the right call for your home, the next question is almost always the same: what’s this actually going to cost? The honest answer to composite deck cost Colorado homeowners can expect depends mainly on deck size, board selection, and how much railing, lighting, or custom features you’re adding. Just because, there isn’t a one size fits all deck with a set price. So here’s a real breakdown instead of an inaccurate national number that doesn’t hold up once quotes start coming in.
Table of Contents:
- What Drives the Composite Deck Price
- Typical Installed Composite Decking Cost by Project Size
- Deck Railing and Lighting Costs
- What Pushes Cost Toward the Higher End
- Why Composite Decks Are Well Worth It
- Get an Accurate Quote for Your Composite Deck
What Drives the Composite Deck Price
Composite decking projects have two main cost components:
- The decking material itself
- The labor to frame, install, and finish it.
The composite brand we use, TimberTech, offers several tiers, from entry-level composite boards to premium capped PVC lines, and material choice alone can shift the price significantly before labor is even factored in.
Labor typically makes up close to half of the total project cost. Framing, fastening, flashing, and finishing work all take real time, and site conditions like ground slope, deck height, and access all affect how long that work takes.
Typical Installed Composite Decking Cost by Project Size
For a standard composite deck project in Colorado, installed cost typically runs $40 to $70 per square foot, covering materials, labor, and basic finishing. More complex projects, ones with premium railing, built-in lighting, curved borders, multiple levels, or custom stairs, typically run $70 to $100+ per square foot.
Here’s what that looks like for common deck sizes:
- A 200 sq ft deck: roughly $8,000–$14,000 for a standard build
- A 300 sq ft deck: roughly $12,000–$21,000 for a standard build
- A 400+ sq ft deck, or a premium build with upgraded railing and features: $20,000–$30,000+
These ranges reflect a fully installed project, not just the cost of the decking boards themselves. Board pricing alone (without labor) typically runs $3.50 to $7.50 per square foot depending on the TimberTech collection, so labor and finishing work make up a substantial share of the total.
Deck Railing and Lighting Costs
Railing and lighting are two of the most common upgrades homeowners add to a composite deck, and both affect the total price differently than the decking boards themselves.
Railing is typically priced per linear foot rather than per square foot.
- Standard composite railing usually runs $40–$65 per linear foot installed.
- Glass panel railing, which keeps sightlines open and works well for view lots, typically runs $80–$150 per linear foot.
- Metal cable railing lands in a similar premium range, usually $70–$130 per linear foot, depending on post spacing and finish.
- For a typical deck perimeter, railing alone can add anywhere from $1,500 on the low end to $6,000 or more for glass or cable systems on a larger deck.
Lighting is usually priced per fixture rather than by square footage.
- Post cap lights and recessed step lights typically run $40–$100 per fixture installed, including wiring.
- A modest lighting package, a handful of step lights plus a few post caps, often adds $500–$1,500 to a project.
- A more comprehensive lighting design, with under-rail lighting, accent lighting, and a dedicated transformer setup, can push that closer to $2,000–$4,000.
Both upgrades are usually easiest to price accurately once the base deck size and layout are set, since railing length and fixture count depend directly on the deck’s footprint.
What Pushes Cost Toward the Higher End
A few specific choices tend to move a project from the low end of the range toward the high end. Premium TimberTech collections with deeper wood-grain texture and enhanced fade resistance cost more per square foot than entry-level lines. Custom railing, especially glass or metal cable systems, adds cost well beyond standard composite railing. Multi-level decks, built-in seating, and integrated lighting all add both material and labor. And decks with difficult site access, like a steep grade or limited equipment access, take longer to build regardless of the decking material chosen.
None of these are bad investments. They’re just worth knowing about upfront so your budget conversation starts in the right range from day one.
Why Composite Decks Are Well Worth It
Unlike a wood deck, a composite deck doesn’t require annual staining or sealing, and it resists fading, warping, and splintering far better over time. That lower long-term maintenance cost is worth factoring into the comparison, even though the upfront installed cost of composite decking typically runs higher than pressure-treated wood. So if you can’t see yourself touching up your deck every few months, composite is not only cost effective, but you won’t have to worry about it much.
Get an Accurate Quote for Your Composite Deck
Online ranges are a helpful starting point, but an accurate number for your specific project depends on your deck’s size, layout, board selection, and site conditions. Lasting Exteriors has completed over 2,600 exterior projects across Morrison and the greater Denver metro, and every deck project is backed by a lifetime workmanship warranty as long as you own your home.
Request your free deck estimate from Lasting Exteriors →
Or call: (720) 720-5492