Trex Decking Cost Calculator
Get an instant free estimate for a Trex composite deck based on your deck size, product line, deck height, and board pattern — for Enhance, Select, Transcend, and Signature lines.
Free Trex Decking Cost Calculator
Use this calculator to calculate the cost of trex composite decking near you for free. Enter your ZIP code for a localized estimate.
Deck Size
Enter the deck surface area in square feet (length × width). A typical residential deck is ~200-500 sq ft.
Trex Product Line:
Deck Height:
Board Pattern:
Additional Services:
Estimates are instant and require no contact information.
Based on inputs, your Trex Decking project cost is approximately:
Note that the cost above is purely an estimate.
The actual cost may be higher or lower depending on the contractor's quote.
How Much Does Trex Decking Cost?
Trex composite decking is priced per square foot and typically runs $30 to $60 per square foot installed. A 300 sq ft deck lands roughly $9,000 to $18,000, with larger or premium builds costing more. An entry Enhance Basics ground-level deck sits at the low end; a Transcend or Signature second-story deck with a picture-frame border and full railing sits at the top.
The product line sets the base rate, then deck height and the board pattern adjust it. Remember the boards are only part of the cost — the substructure, railing, stairs, and labor are a big share, and railing alone can add thousands. Use the calculator above to price your deck, then read on for what drives each line.
Trex Decking Cost by Product Line
Installed Cost by Trex Line
| Trex Line | Installed / Sq Ft | Notes |
|---|---|---|
| Enhance Basics | $25 – $38 | Entry-level, budget-friendly. |
| Enhance Naturals / Select | $32 – $48 | Mid-range, more colors. |
| Transcend | $45 – $60 | Premium grain & warranty. |
| Signature | $55 – $75 | Top-tier, most realistic. |
Source: Baseline labor derived from U.S. Bureau of Labor Statistics, Carpenters (SOC 47-2031); ranges reflect our aggregated deck-builder quote data and include the substructure and installation labor.
Common Add-Ons
| Add-On | Typical Cost | Notes |
|---|---|---|
| Composite / Aluminum Railing | ~$6/sq ft | Priced by perimeter. |
| Hidden Fastener Upgrade | ~$1.50/sq ft | Clean, screw-free surface. |
| Fascia Board / Skirting | ~$2/sq ft | Finished edge trim. |
| Deck / Riser Lighting | ~$2/sq ft | Post, step & riser lights. |
| Composite Stairs | ~$700 | A flight of deck stairs. |
| Tear Out Old Deck | ~$3.50/sq ft | Demo & dispose of the old deck. |
Source: U.S. Bureau of Labor Statistics, Carpenters (SOC 47-2031) for baseline labor, combined with our aggregated quote ranges from licensed deck builders. Regional adjustments applied via the calculator above.
The 6 Factors That Drive Your Quote
1. Deck Size
Trex is priced per square foot (length × width), so deck area is the foundation of the estimate. A typical residential deck is about 200 to 500 sq ft. Bigger decks cost more in total, though the per-foot rate can ease slightly at scale as fixed setup and mobilization spread out. Measure the deck surface, not the yard.
2. Trex Product Line
The line sets the base installed rate: Enhance Basics (~$30/sq ft) is the value entry, Enhance Naturals (~$36) and Select (~$42) sit mid-range, and Transcend (~$52) and Signature (~$62) are premium with deeper grain, better fade/stain resistance, and stronger warranties. All are no-stain, no-seal — you're paying up for looks and performance.
3. Deck Height
The boards cost the same at any height, but the substructure doesn't. Ground-level is the baseline; a raised deck adds footings, posts, stairs, and railing (about +20%); and a second-story or elevated deck adds tall posts, deeper footings, heavier framing, and slower work at height (about +45%). Elevation is often the biggest swing between two same-size decks.
4. Board Pattern
Straight boards are the baseline. A diagonal (45°) layout adds about 10% for the extra cuts and waste, and a picture-frame border adds about 18% for the border and breaker boards, precise miters, and extra blocking. Composite's consistent color makes these patterns look especially crisp, which is why they're popular despite the added labor.
5. Railing & Fasteners
Railing is required by code above about 30 inches of height and is a major cost, priced by the deck's perimeter — composite and aluminum are common, with cable or glass at a premium. Hidden fasteners (clips seated in the board grooves) give the clean, screw-free surface that defines the composite look and are a small but standard upgrade.
6. Stairs, Lighting & Tear-Out
Finishing items round out the quote: a flight of composite stairs, fascia and skirting to cover the framing edge, integrated deck and riser lighting, and tearing out and disposing of an old deck before the new one goes in. Each is a real line item the calculator lets you toggle so the estimate matches your project.
Which Trex Line Should You Choose?
Every Trex line is low-maintenance, so the choice comes down to budget, looks, and how long you want the color and warranty to hold up. Here's the honest breakdown.
Enhance (Basics / Naturals) makes sense when
- Budget is the priority: the lowest-cost way into composite, with the same no-stain benefit.
- The deck is lower-profile or secondary, where premium grain isn't the point.
- You want composite over wood without stretching to the premium tiers.
Select, Transcend, or Signature make sense when
- Looks matter most: Transcend and Signature have the deepest, most realistic wood grain.
- Sun and stains are a concern: the capped premium lines resist fading and staining best.
- You want the strongest warranty and plan to stay in the home for the long haul.
- It's a showcase deck where the extra cost per square foot is a small share of the whole project.
How to Vet and Hire a Deck Builder
A composite deck is only as good as the frame under it and the crew that builds it. The boards last decades — make sure the structure does too. Before you hire:
- Confirm licensing and insurance for deck/carpentry work, plus liability coverage.
- Ask about Trex experience and, ideally, TrexPro status — proper board gapping and fastening protect the warranty.
- Check the substructure spec: footing depth (below frost line), joist spacing, and a code-compliant ledger connection to the house.
- See recent composite decks and reviews, especially picture-frame or elevated builds if that's your project.
What a complete quote should spell out
- The Trex line, color, deck size, height, and board pattern.
- The substructure (framing material, footings, ledger) and whether it's included.
- Which railing, fasteners, fascia, stairs, and lighting are in scope.
- Old-deck tear-out, permits and inspections, and the workmanship warranty alongside Trex's product warranty.
Methodology & Sources
This calculator starts from a per-square-foot installed rate set by your Trex product line(Enhance Basics, Enhance Naturals, Select, Transcend, or Signature), multiplies it by an elevation factor (ground, raised, or elevated) and a board-pattern factor(standard, diagonal, or picture-frame), adds per-square-foot and flat-fee add-ons (railing, hidden fasteners, fascia, lighting, stairs, and old-deck removal), applies a minimum job charge, and adjusts the result to your ZIP code's regional price level. In short: Area × (Line Rate × Height × Pattern) + Add-ons, then localized. Baseline labor is anchored to federal wage data for carpenters and calibrated against our aggregated deck-builder quotes.
Data sources:
- U.S. Bureau of Labor Statistics — Carpenters (SOC 47-2031)
- North American Deck & Railing Association (NADRA)
- Trex — Product Lines & Warranties
For a full explanation of how every calculator on this site is built and localized, see our methodology page.
About the Reviewer
Pool & Outdoor Living Contractor
Outdoor-living contractor specializing in pools, decks, fences, and backyard structures.
View full profile & credentials →Frequently Asked Questions
Installed Trex composite decking runs about $30 to $60 per square foot, so a 300 sq ft deck typically lands between $9,000 and $18,000, with larger or premium decks costing more. The product line sets the base rate (Enhance Basics is cheapest, Transcend and Signature are premium), and deck height and board pattern adjust it from there. It's important to know the boards are only part of the price — the substructure (joists, beams, posts, footings), labor, railing, and stairs make up a large share, and railing in particular can add several thousand dollars on a raised deck.
Trex tiers its composite decking by looks, performance, warranty, and price. Enhance is the value tier — Enhance Basics (the most economical, limited colors) and Enhance Naturals (a step up with more natural wood tones). Select is the mid-range 'better' line with refined colors. Transcend is the premium 'best' line with deep multi-tonal grain and top scratch/fade/stain resistance — the closest look to exotic hardwood and the most popular premium choice. Signature is the top tier with the most realistic finishes and longer boards for high-end projects. Higher lines cost more per square foot but bring richer looks, better fade/stain resistance, and stronger warranties; all share the core no-stain, no-seal benefit.
It depends on how long you'll keep the deck. Trex costs more upfront than pressure-treated wood (and is comparable to premium cedar), but it eliminates wood's biggest ongoing chore: no staining, sealing, or refinishing every year or two, plus no rot, splintering, or insect damage. Over a 25-to-30-year life, that lower upkeep often makes Trex's lifetime cost competitive with or below wood despite the higher purchase price. The tradeoffs: it can get hot in direct sun, costs more to install, and the framing underneath is still wood or steel. For homeowners staying put who want low maintenance, Trex is usually worth it; for a tight budget or short-term need, wood can make sense.
The Trex boards cost the same per square foot no matter how high the deck sits — but the structure holding them up scales dramatically with height. A ground-level or floating deck needs minimal posts and simple footings. A raised deck (the common attached-with-stairs setup) adds footings below the frost line, posts, beams, stairs, and code-required railings — about 20% more here. A second-story or elevated deck is the priciest (about +45%) because it needs tall posts, deeper and larger footings to carry the load and resist lateral forces, heavier beams and bracing, longer stairs, and slower, riskier work at height. Two same-size decks in the same Trex line can cost very differently based on elevation alone.
A picture-frame deck runs a border board around the perimeter so the field boards butt into it, hiding the cut ends for a cleaner, higher-end look — often with a contrasting-color frame as an accent. It costs more than a plain straight layout because it needs extra border and breaker boards (and more cutting waste), precise miter cuts at the corners, and additional blocking under the border to support it. This calculator adds about 18% for a picture-frame border and about 10% for a diagonal (45°) pattern, which similarly increases cuts and waste. These patterns look especially sharp in composite because the boards' consistent color and quality show off the design.
Usually yes on both. Grooved Trex boards are typically installed with a hidden fastener system — clips that seat into a groove on each board's edge and screw into the joists, so no screw heads show on the surface. It's the hallmark clean composite look (square-edge boards can be face-screwed on stairs). It adds a bit over simple face-screwing but is standard, and this calculator offers it as an upgrade. Railing is required by code on decks more than about 30 inches above grade, and even low decks often add it for looks. Trex makes matching composite and aluminum railing, and cable or glass systems are premium options — railing is priced by perimeter and is a significant line item.
It's low-maintenance, not no-maintenance. You skip wood's staining, sealing, and refinishing entirely — the color and protective shell are built in — and you won't deal with rot or splintering. What Trex still needs is periodic cleaning: wash it a couple of times a year with soap and water and a soft brush to clear dirt, pollen, and grime, and clean up spills, grease, and leaf debris promptly so a surface film doesn't feed mold or mildew in damp, shaded spots. Keep the board gaps clear for drainage, and avoid harsh chemicals or abrasive tools. The capped premium lines (Transcend, Signature) resist fading and staining best.
Most residential Trex decks take about one to two weeks. A straightforward ground-level or modest raised deck can go up in a few days to a week; large, elevated, or design-heavy decks (picture-frame patterns, multiple levels, lots of railing and stairs) take two weeks or more. The schedule includes permitting and inspections, any old-deck demolition, digging footings and setting posts (concrete has to cure), building and inspecting the substructure, then installing the boards with hidden fasteners, followed by railing, stairs, fascia, and finishing. Footing and framing inspections can add waiting time, and the substructure often takes as long as installing the visible boards — plus weather and material lead times can extend it.