Redoing a deck with Trex typically costs $20-$45 per square foot when the existing frame can be reused, or $35-$75 per square foot for a rebuild that includes structural framing. A deck’s size, joist condition, railing choices, stairs, and local labor rates drive the final price.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Trex resurfacing | $8,000 | $13,000 | $22,500 | 400 sq ft; boards and basic labor, usable frame |
| Full Trex rebuild | $14,000 | $22,000 | $30,000 | 400 sq ft; new framing and standard finishes |
| Trex decking boards | $5 | $8 | $13 | Per sq ft of deck area; product tier and color vary |
| Railing | $40 | $75 | $140 | Per linear ft; material and design affect price |
Assumptions: U.S. contractor pricing, standard access, ordinary rectangular deck, before unusual structural repairs or taxes.
What Trex Deck Redo Prices Look Like by Project Size
For a straightforward resurfacing, contractors remove old decking and install Trex boards over a sound, code-compliant frame. Typical installed pricing is $20-$45 per square foot. A 200-square-foot platform may cost $4,000-$9,000, while a 400-square-foot deck often runs $8,000-$18,000 before extensive railings, stairs, or repairs.
A complete replacement generally costs $35-$75 per square foot because it includes demolition and new framing as well as decking. A 400-square-foot project therefore commonly totals $14,000-$30,000. Complex layouts, elevated decks, premium Trex lines, and higher-cost metro areas can exceed that range.
For a typical 400-square-foot deck, budget about $13,000 for a basic resurfacing or roughly $22,000 for a standard full rebuild. These averages assume midrange materials, professional installation, and no major foundation or code corrections.
Per-square-foot quotes are useful for early comparisons, but they can hide differences in what is included. A low quote may omit railing, stair work, disposal, fascia, or replacement of deteriorated joists. Ask contractors to identify the included deck area and list each excluded item before comparing totals.
How Boards, Framing, Railing, and Removal Shape the Quote
Materials and labor account for most of the bill, but demolition, hardware, stairs, and disposal can change the total. The breakdown below reflects a 400-square-foot full rebuild with ordinary access and a standard railing package; individual bids may group costs differently.
| Cost component | Low | Average | High | Pricing basis |
|---|---|---|---|---|
| Trex boards and fasteners | $2,400 | $3,600 | $5,200 | $6-$13 per sq ft |
| Framing lumber and connectors | $2,000 | $3,600 | $5,600 | Joists, beams, posts, hardware |
| Installation labor | $4,000 | $6,000 | $9,000 | Approximately $50-$100 per worker-hour |
| Railing and stairs | $1,500 | $3,600 | $6,500 | Rail per linear ft; stair scope varies |
| Demolition and disposal | $800 | $1,600 | $3,000 | Removal, hauling, and dump fees |
Trex board cost varies by product line, profile, color, and retailer. Grooved boards used with hidden fasteners may cost more than basic square-edge boards, while fascia and border boards add material and labor. Many estimates include a waste allowance of about 5%-10% for cuts, especially on angled or irregular decks.
Framing is the key distinction between an $8,000-$18,000 resurfacing quote and a $14,000-$30,000 rebuild quote. A line-item bid should show whether the contractor is replacing only decking or also joists, beams, posts, and footings.
Which Deck Size, Joist Spacing, and Height Raise the Price?
Deck area determines how many boards and labor hours are needed, but square footage alone does not explain the full estimate. An elevated deck requires more demanding access, stronger structural connections, and often more railing. A second-story project can add roughly 10%-25% compared with an easy-to-reach ground-level deck of similar size.
Joist condition and spacing matter for composite decking. Many Trex installations use joists spaced 16 inches on center; some diagonal board patterns or product specifications call for closer spacing, such as 12 inches. If existing joists are too far apart, damaged, or uneven, a contractor may need to add or replace framing before installation. This can add $1,000-$5,000 or more, depending on area and repair extent.
Railing length is another measurable driver. A 400-square-foot deck with 60 linear feet of railing at $40-$140 per linear foot can add $2,400-$8,400. Stairs may cost $800-$3,500 for a typical run, with wide, multi-landing, or high-rise stairs costing more. Built-in benches, lighting, picture-frame borders, and privacy screens are separate upgrades.
Every additional 100 square feet can add about $2,000-$4,500 for resurfacing or $3,500-$7,500 for a full rebuild. Those ranges assume the same access, finish level, and structural condition; an unusual shape or high deck can cost more per square foot than a simple platform.
Structural surprises can include rot near the house ledger, loose posts, inadequate footings, or water damage hidden beneath old boards. Repairs may add several hundred dollars for limited work or several thousand dollars when multiple joists, beams, or supports need replacement. A contractor should inspect the frame rather than assume it is reusable based only on its visible surface.
Resurfacing a Sound Frame Versus Rebuilding the Whole Deck
Resurfacing is usually the lower-cost choice when the frame is firm, level, properly attached, and compatible with the selected Trex product. Removing the old boards and installing new composite decking commonly costs $20-$45 per square foot, including basic labor and disposal. Railing, fascia, stairs, and framing repairs can raise the total.
A full rebuild makes sense when joists, beams, posts, or footings are deteriorated or incorrectly built. It costs more upfront but allows the contractor to correct structural and layout issues. Typical installed pricing is $35-$75 per square foot, with elevated or intricate decks often beyond that range.
Replacing only isolated damaged boards may cost $300-$1,500 for a small repair, but matching older colors and profiles can be difficult. A partial board replacement may also require removing adjacent boards to access hidden fasteners. If the deck frame is sound but the surface is worn, resurfacing avoids the expense of replacing structural components unnecessarily.
Do not choose resurfacing until the contractor confirms that the existing frame is structurally sound and suitable for composite decking. A written inspection note identifying joist spacing, rot, ledger attachment, and planned repairs helps show whether the lower quote is a genuine savings or an incomplete scope.
How Many Labor Hours Does Trex Installation Take?
A professional crew may complete a simple 200-square-foot resurfacing in two to four working days. A 400-square-foot resurfacing often takes four to seven days, while a full rebuild of that size may take one to two weeks. These are broad scheduling estimates, not guaranteed durations; weather, inspections, stairs, and custom details can extend the job.
Labor rates commonly fall around $50-$100 per worker-hour when contractor overhead, insurance, and business costs are reflected in the project price. A two- or three-person crew may spend approximately 60-120 labor hours on a typical 400-square-foot deck, with more time needed for demolition or extensive framing. Some contractors quote a fixed project price rather than hourly billing.
Ask whether the estimate includes demolition, installation of hidden fasteners, trimming, stair construction, cleanup, and hauling. Clarifying those tasks can explain why two quotes with similar materials differ by several thousand dollars.
Labor time rises fastest when access is difficult, framing needs correction, or the deck has multiple levels and stair runs. Clearing a path to the work area and deciding on board direction and railing style before work begins can reduce delays, though it will not eliminate necessary structural work.
Three Trex Deck Quotes for Different 400-Square-Foot Scopes
The examples below show how scope changes the bill even when the deck area stays the same. They use illustrative midmarket rates and standard materials; local bids can differ substantially.
| Project | Scope and unit pricing | Estimated total | Typical duration |
|---|---|---|---|
| Basic resurfacing | 400 sq ft at $24 per sq ft; limited trim, sound frame | $9,600 | 4-6 days |
| Resurfacing with rails and stairs | 400 sq ft at $30 per sq ft; 60 ft railing at $75 per ft; $1,800 stair work | $18,300 | 6-9 days |
| Full midrange rebuild | 400 sq ft at $46 per sq ft; framing, removal, standard rails | $18,400 | 8-12 days |
The basic resurfacing example assumes no joist replacement and minimal accessory work. The second includes a midrange railing allowance and stairs, but assumes the frame remains usable. The rebuild example includes ordinary new framing and demolition; premium boards or extensive footing work could push the total higher.
When comparing bids, match the scope line by line rather than comparing only the final total. Check the Trex product line, board profile, railing material, stair count, disposal, framing allowance, and warranty terms. Also confirm whether the contractor has included sales tax where applicable.
How Midwest, Coastal, and Urban Labor Rates Change Estimates
Deck pricing varies by local wages, contractor demand, disposal fees, building rules, and material delivery distance. A practical planning adjustment is to expect prices in lower-cost rural and inland markets to fall near the lower end of the ranges above. Large metro areas and high-cost coastal markets may run about 15%-30% above a comparable midmarket quote.
Remote rural locations can also be expensive if crews travel far or materials require special delivery. Coastal areas may have stricter structural requirements, corrosion-resistant hardware needs, or higher labor costs. In snowy regions, seasonal scheduling can affect availability, while wet climates may require careful drainage and protection around the house connection.
Use national ranges as a starting point, then compare at least three local estimates for the same written scope. A difference of 20% between quotes may reflect labor markets, but it can also signal differences in framing, railing, removal, or product quality rather than a simple regional price gap.
Permits and inspections are determined locally. A resurfacing that keeps the structure unchanged may be treated differently from a rebuild, but rules vary by city and project height. Permit fees may range from about $100-$500 for a straightforward deck, while engineering, plan review, or required code upgrades can add more. The contractor should identify who obtains permits and whether fees are included.
Which Trex Upgrades Can Be Removed From the Budget?
Keeping the existing footprint and a sound frame is often the largest controllable saving. Avoid enlarging the deck or adding a second level unless the added space is necessary. A simpler rectangular layout also reduces offcuts and labor compared with curves, angled corners, or several small platforms.
Choose a Trex product line and color based on appearance and expected use rather than defaulting to the highest-priced option. Standard board patterns, basic railing, and surface-mounted lighting usually cost less than premium railing systems, elaborate borders, or integrated lighting. Confirm that any lower-cost substitute meets the product requirements for the joist spacing and fastening system.
Homeowners can sometimes clear furniture, planters, and stored items before demolition, but should leave structural work, cutting, and installation to qualified crews. DIY demolition may reduce labor charges, yet it can create disposal costs or damage that complicates the contractor’s work. Ask the contractor whether owner-prepared access or removal actually lowers the written price.
Request separate prices for must-have structural work and optional finishes before authorizing upgrades. Compare bids using the same deck dimensions and Trex product specification, ask about repair allowances, and have changes documented in writing. A low initial quote with broad exclusions can become more expensive than a complete estimate.
Scheduling outside the busiest local building months may improve contractor availability, though discounts are not guaranteed. Weather can limit installation, and delaying a project with active rot may increase repair needs. The most reliable savings come from a defined scope, an inspected frame, standard details, and a quote that includes removal and disposal.