Replacing deck floorboards typically costs $3,000-$9,000 for a 300-square-foot deck, with a national average near $5,500. The deck’s size, wood or composite material, labor rates, stairs and railings, and any hidden framing damage can move the quote considerably.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Wood deck floor replacement | $8 per sq ft | $14 per sq ft | $22 per sq ft | Pressure-treated or common hardwood boards |
| Composite deck floor replacement | $15 per sq ft | $23 per sq ft | $35 per sq ft | Board and installation price; premium products cost more |
| 300-square-foot deck, wood | $2,400 | $4,200 | $6,600 | Assumes framing is reusable |
| 300-square-foot deck, composite | $4,500 | $6,900 | $10,500 | May include hidden fasteners and trim |
| Joist or framing repair | $100 per joist | $250 per joist | $500+ per joist | Depends on access and extent of rot |
What replacing deck boards costs on a 300-square-foot deck
For a straightforward board-only project, homeowners commonly pay $8-$22 per square foot for wood and $15-$35 per square foot for composite. These installed rates generally include removing existing boards, disposing of ordinary debris, supplying new boards, and fastening them to sound framing. A 300-square-foot project therefore ranges from about $2,400-$6,600 for wood or $4,500-$10,500 for composite.
A practical national budget is about $5,500 for a midrange wood deck floor, or roughly $7,000-$8,000 for a comparable composite installation. A simple rectangle with easy ground-level access tends to fall near the lower end; complex borders, stairs, premium boards, or framing repairs raise the total.
These figures cover the walking surface rather than a complete deck rebuild. Replacing railings, stairs, posts, or the supporting structure can add several hundred to several thousand dollars. Material prices also vary by region and product availability, so a local written quote is more useful than treating a national average as a guaranteed price.
Assumptions: 300 square feet of deck surface, standard board layout, ordinary removal, and framing suitable for reuse; labor rates and material availability vary by U.S. market.
How boards, tear-out, and labor shape the quote
Quotes usually combine materials, installation labor, removal, and smaller charges for fasteners, delivery, or disposal. Ask whether the contractor priced the visible deck surface alone or included stairs, fascia, and perimeter trim. The distinction matters because a quoted per-square-foot rate may not include every part of the deck.
| Quote component | Typical price | What changes the charge | Common billing basis |
|---|---|---|---|
| Wood or composite boards | $3-$18 per sq ft | Species, board grade, color, and product line | Material area, with waste allowance |
| Installation labor | $4-$12 per sq ft | Layout, access, board pattern, and local rates | Surface area or crew hours |
| Old-board removal | $2-$5 per sq ft | Fastener type, board condition, and height | Surface area or separate tear-out fee |
| Disposal and delivery | $150-$700 | Haul distance, debris volume, and site access | Flat charge or per load |
| Fasteners and finish trim | $150-$800 | Hidden clips, screws, fascia, and edge details | Project allowance or linear foot |
| Framing repair allowance | $100-$500+ per joist | Rot, joist size, connection details, and access | Per joist or time and materials |
Labor, removal, and material choice together account for most of the replacement bill. For estimating labor, contractors may use an hourly rate of roughly $50-$100 per worker, although many quote the full project rather than itemizing hours.
Some estimates include a 5%-10% material overage for cuts and defects. A diagonal layout or intricate picture-frame border can require more waste and careful fitting than straight boards. Clarify whether the quote includes sales tax, permits if required, and a written allowance for concealed repairs.
Why joist spacing and board material change deck floor prices
Deck area is a starting point, but the board specification and existing structure can change the estimate substantially. Pressure-treated pine is usually among the least expensive choices. Cedar, redwood, and many hardwoods cost more, while composite boards have a higher purchase price but do not require the same periodic staining as many wood surfaces.
Material and framing compatibility should be settled before comparing bids. Composite products typically require joists spaced no farther apart than the manufacturer allows, often 16 inches on center for common installations; some designs call for 12 inches, particularly when boards run diagonally. If existing joists are 24 inches apart, adding or replacing joists may be necessary before installing certain boards.
Board width and thickness, hidden-fastener systems, and pattern also matter. A standard straight layout is generally less labor-intensive than diagonal decking, which can add roughly 10%-20% to labor and increase offcuts. Premium composite lines and specialty hardwoods can push materials well above ordinary pressure-treated lumber, even when the deck footprint is unchanged.
Condition is another major variable. A contractor may find soft joists, loose ledger connections, damaged stair framing, or inadequate flashing after removing the old surface. Replacing a few accessible joists might add $300-$1,500; extensive structural deterioration can turn a floor-only project into a larger rebuild costing several thousand dollars more.
Stairs, built-in benches, and unusually shaped edges require extra cuts and detail work. A deck 8 feet or more above grade can also cost more to work on than a low platform because access, safety equipment, and debris handling are more difficult. These factors should appear as separate line items rather than vague contingencies.
How long a deck-board crew works and what labor covers
A crew of two or three may finish a simple 200- to 300-square-foot board replacement in one to three working days. Removal and installation take longer when the deck is elevated, boards are tightly fastened, the layout includes borders, or weather interrupts the work. Framing repairs and inspections can extend the schedule beyond the board installation itself.
Labor estimates should identify removal, installation, and repair as distinct tasks. A contractor might estimate 20-40 crew hours for a straightforward medium-size deck, but larger surfaces or detailed patterns can take substantially longer. Hourly rates alone do not predict a final invoice unless the estimate also states crew size, expected hours, and how additional work is approved.
Before work begins, confirm whether the crew will protect nearby siding and landscaping, move furniture, and haul away old boards. Ask how the contractor handles unexpected rot: a useful agreement describes the hourly or per-joist rate and requires approval before repair costs exceed the stated allowance.
How deck replacement quotes vary across U.S. regions
Labor-intensive markets and areas with higher delivery costs often price above rural regions. As a broad planning range, metropolitan Northeast and West Coast quotes may run about 10%-25% above a national midrange estimate. Smaller Midwestern and Southern markets may be 5%-15% below it, although coastal demand, local material supply, and contractor availability can reverse those patterns.
Use regional percentages as a comparison tool, not a fixed adjustment. For example, a $5,500 midrange wood-floor estimate might translate to roughly $5,800-$6,900 in a higher-cost metro area or $4,700-$5,200 in a lower-cost market, before unusual site work. Composite boards may show different regional spreads because shipping and product availability influence material prices.
Get at least two or three itemized estimates from contractors who regularly work with the chosen material. Compare the same board product, square footage, disposal scope, fastening system, and repair allowance. A lower total may simply omit stairs, fascia, or tear-out rather than represent a lower price for equivalent work.
Three deck sizes show how project scope affects the total
The examples below assume ordinary access, straight board runs, and framing that can be reused. They illustrate typical installed budgets rather than guaranteed quotes; local rates, material grades, and repair findings can change the totals.
| Example | Scope and material | Estimated price | What is included |
|---|---|---|---|
| Small platform | 120 sq ft; pressure-treated pine at $12-$18 per sq ft | $1,440-$2,160 | Board removal, new boards, standard fasteners, basic haul-away |
| Family deck | 300 sq ft; cedar at $15-$23 per sq ft | $4,500-$6,900 | Standard installation, ordinary disposal, limited trim |
| Large composite deck | 500 sq ft; midrange composite at $22-$32 per sq ft | $11,000-$16,000 | Board removal, composite installation, fastening system, typical waste |
A larger deck does not always cost exactly the same per square foot as a small one. Fixed charges for delivery, mobilization, and disposal make small jobs more expensive per square foot. On a large deck, stairs, borders, or structural repairs can add more than the surface-area estimate suggests.
For example, a 300-square-foot composite deck with 30-40 crew hours at $60-$90 per worker-hour would imply $1,800-$3,600 in labor before material and disposal. A bid may use a blended installation rate instead, so this calculation is a reasonableness check rather than a substitute for the contractor’s full scope.
Wood, composite, or spot repairs for an aging deck floor
Replacing only failed boards can be cheaper than resurfacing the entire deck when damage is isolated. A small repair may cost $300-$1,200, depending on the number of boards, minimum service charge, and whether matching material is available. If more than about 20%-30% of the surface is damaged, or boards are failing across multiple areas, a full replacement may provide a more consistent result.
Choose the replacement material with both upfront price and upkeep in mind. Pressure-treated wood generally has the lowest initial cost, but it may need cleaning and periodic sealing or staining. Cedar and redwood cost more and also need maintenance to preserve appearance. Composite typically costs more upfront but avoids routine staining; it still needs cleaning and product-specific care.
Before installing new boards, have the joists, ledger, posts, and connections checked. A new surface is not a durable fix for a deck with significant structural decay. If repair work approaches the cost of rebuilding the supporting structure, compare a full rebuild quote against resurfacing plus framing repairs rather than assuming board replacement is the economical choice.
Which deck-floor choices can lower the replacement bill
Keeping the existing layout and reusing sound framing are two of the most effective ways to control cost. Straight board runs, standard widths, and commonly stocked colors reduce cutting time and special-order expenses. Changing from wood to a composite system may also require new fasteners or joist adjustments, so compare the complete installed price rather than the board price alone.
Control the written scope before asking contractors to reduce the price. Confirm the exact deck area, whether stairs and fascia are included, the board grade, and the quantity of framing repairs covered by the estimate. Separate optional upgrades, such as decorative borders or premium railing work, from necessary safety repairs so each choice has a clear price.
Homeowners can often lower preparation charges by clearing furniture, planters, and movable accessories before the crew arrives. They should not remove structural components or begin tear-out unless the contractor approves; damaging framing or creating an unsafe work area may increase the total. Ask whether scheduling during a contractor’s less busy period can improve availability or pricing, but do not trade away permits, proper fastening, or adequate installation details.
Finally, compare at least three written quotes on the same material and scope. Look for per-square-foot rates, disposal charges, a clear labor description, and a change-order process for concealed damage. A quote that explains exclusions is easier to compare than a low lump sum with no detail.