A pressure-treated wood deck typically costs $25-$55 per square foot installed, or about $7,500-$16,500 for a 300-square-foot project. Treated wood deck cost depends most on deck size and height, stairs and railings, site access, local labor rates, and whether an old deck must be removed.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Installed deck | $25 per sq ft | $40 per sq ft | $55 per sq ft | Basic pressure-treated deck, standard access |
| 300-sq-ft deck | $7,500 | $12,000 | $16,500 | Before unusual grading or demolition |
| Materials only | $8 per sq ft | $13 per sq ft | $20 per sq ft | Lumber, fasteners, and basic framing supplies |
| Deck removal | $5 per sq ft | $10 per sq ft | $18 per sq ft | Hauling and disposal can raise the charge |
What a pressure-treated deck costs by size
For a straightforward ground-level deck, contractors commonly charge $25-$45 per square foot. Elevated decks, complex shapes, or projects with many stairs and railings can reach $40-$70 per square foot. A low estimate generally assumes a simple rectangle, ordinary pressure-treated pine, firm ground, and no major demolition.
A practical planning figure is about $40 per square foot installed for a standard deck with typical access and finishes. At that rate, a 200-square-foot platform is around $8,000, while a 400-square-foot deck is around $16,000. These are budget estimates rather than guaranteed bids; local labor and the structural plan can shift the total substantially.
| Deck size | Low installed price | Average installed price | High installed price | Typical scope |
|---|---|---|---|---|
| 10 by 12 ft, 120 sq ft | $3,000 | $4,800 | $6,600 | Small, simple platform |
| 12 by 20 ft, 240 sq ft | $6,000 | $9,600 | $13,200 | Family-size rectangular deck |
| 16 by 20 ft, 320 sq ft | $8,000 | $12,800 | $17,600 | Larger platform with more framing |
Assumptions: U.S. national planning ranges, standard treated-pine decking, contractor installation, ordinary soil, and no extensive access or code complications.
How framing, labor, and stairs shape the quote
A deck quote typically combines lumber and hardware, framing and installation labor, site preparation, and smaller charges such as delivery or disposal. The allocation varies by design; framing lumber may be more expensive than decking boards when the structure is elevated or requires extra posts and beams.
Labor and structural framing usually account for the largest shares beyond the decking itself. The table gives common planning ranges for a 300-square-foot, ground-level deck. A contractor’s line items may combine several categories or include overhead within labor.
| Quote component | Typical range | Example for 300 sq ft | What changes the charge |
|---|---|---|---|
| Decking, framing lumber, and fasteners | $8-$20 per sq ft | $2,400-$6,000 | Lumber grade, joist spacing, and waste |
| Installation labor | $12-$30 per sq ft | $3,600-$9,000 | Height, cuts, access, and crew rates |
| Footings and site preparation | $500-$2,500 total | $500-$2,500 | Soil, slope, digging, and concrete needs |
| Permit and inspection fees | $100-$800 total | $100-$800 | Municipality and project scope |
| Delivery and disposal | $150-$1,200 total | $150-$1,200 | Distance, debris volume, and access |
Numbers in the example are not meant to be added as fixed allowances: ranges overlap, and some contractors bundle labor, preparation, and delivery. Ask whether the estimate includes concrete footings, ledger flashing, railing, stairs, fasteners, cleanup, and sales tax. helps compare labor assumptions: a 60-hour crew estimate at $75-$125 per hour equals $4,500-$7,500 before any separate overhead or equipment charges.
Which deck dimensions and site conditions raise the price
Deck size is only one driver. A simple 12-by-20-foot rectangle usually needs less cutting and edge framing per square foot than a deck with angles, built-in seating, or multiple levels. A change from 12-inch to 16-inch joist spacing may affect material quantities and structural suitability; the correct spacing depends on board thickness, span, local code, and the manufacturer’s requirements.
Height, stairs, and railing can turn a low platform estimate into a much larger structural project. A deck less than about 30 inches above grade may avoid some railing requirements, depending on local code, while a 4-foot-high deck commonly requires stairs, guardrails, and stronger support details. A 10-foot stair run or a long perimeter railing adds materials and installation time.
Slope and soil also matter. A site with a 2-foot grade change may require taller posts, deeper or stepped footings, and additional bracing. Rocky soil, buried utilities, poor drainage, or limited access for lumber delivery can add several hundred to several thousand dollars. Replacing a ledger attached to an existing house can also reveal water damage that was not visible before demolition.
Material selection changes the estimate too. Standard treated pine boards are generally the lower-cost choice, while premium treated lumber with fewer knots or a smoother finish costs more. Assumptions: A 300-sq-ft deck, U.S. contractor labor, and code-compliant framing; actual structural specifications require local review.
How regional labor rates change deck bids
Pricing varies with wages, contractor demand, climate, transport, and local permitting. As a rough comparison, rural areas in lower-cost markets may come in 10%-20% below the national planning range for a basic design. Large metro areas and high-cost coastal markets may run 15%-30% above it, particularly where labor is scarce or access is difficult.
Compare local quotes using the same dimensions, railing length, stair count, and material grade. For a 300-square-foot deck that might budget near $12,000 at a $40-per-square-foot midpoint, a 20% regional adjustment implies roughly $9,600 in a lower-cost market or $14,400 in a higher-cost market. Those percentages are useful for screening a budget, not for predicting an individual contractor’s price.
Climate can affect the specification rather than merely the labor rate. Wet or freeze-thaw regions may require careful drainage, flashing, and footing details. Local building departments set requirements for attachment, guards, stairs, and frost-depth footings, so quotes from neighboring towns may differ even when their labor markets are similar. Ask whether the contractor has included required inspections and any structural upgrades identified by the local code official.
How many crew hours a treated deck needs
A basic 200-square-foot ground-level deck may take a small crew about 3-6 working days, including layout, footings, framing, decking, and cleanup. A 300- to 400-square-foot deck often takes 1-2 weeks, while a high deck with several stair runs, complicated footing work, or demolition can take longer. Weather, inspections, and material delivery may extend calendar time beyond the days spent on site.
More square footage does not always mean a proportional labor increase. A crew can build a large, open rectangle efficiently, but a smaller deck with a steep slope or tight access may take more hours per square foot. Typical contractor labor rates may range from $50-$100 per worker-hour, or about $75-$125 per crew-hour where a crew rate is quoted; markets and company pricing methods differ.
Get the projected crew size and estimated workdays in writing, along with the hourly rate for approved extras. Clarify whether the quote assumes homeowner access to a driveway, an unobstructed work area, and a usable power source. A minimum service or mobilization charge may make very small decks cost more per square foot than larger jobs.
Three deck bids that show how scope changes the total
Example estimates make it easier to judge whether a quote’s scope matches its total. The figures below are illustrative U.S. contractor prices, not national fixed rates. They assume pressure-treated framing and decking, ordinary fastening, and no hidden structural damage.
For comparison, each example identifies the size, labor allowance, and cost per square foot. Local permit charges and tax may be included differently, so a real bid should state those items separately or explain how they are included.
| Project | Included work | Labor allowance | Estimated total | Installed rate |
|---|---|---|---|---|
| 120 sq ft low platform | Simple rectangle, basic steps, no removal | 35-50 crew-hours | $4,000-$6,500 | $33-$54 per sq ft |
| 240 sq ft family deck | Standard framing, railing on one side, short stair run | 65-95 crew-hours | $8,000-$13,500 | $33-$56 per sq ft |
| 320 sq ft elevated deck | Higher posts, full guardrail, stairs, more footing work | 100-150 crew-hours | $15,000-$24,000 | $47-$75 per sq ft |
The elevated example costs more per square foot because posts, guardrails, stair construction, and fall-protection details add work that does not increase the walking area. If a bid is far outside its comparable range, check for differences in lumber grade, railing coverage, footing depth, removal, and warranty rather than comparing only the total.
When repair or a different decking material costs less
Replacing only damaged boards can cost less than rebuilding the entire deck when joists, beams, posts, and footings remain sound. A contractor may charge roughly $10-$30 per square foot for decking-board replacement, depending on removal, board availability, and fastening details. A small repair can still have a minimum charge, and color differences between new and weathered treated lumber may remain visible.
Keep the existing structure only after its load-bearing parts have been checked. Soft joists, loose connections, corroded hardware, or water-damaged house framing can make a surface-only repair short-lived or unsafe. A structural inspection or repair visit may cost about $100-$500, with larger repairs priced after the damaged area is exposed.
Pressure-treated wood is typically less costly upfront than composite decking. Composite commonly runs about $40-$80 per square foot installed, depending on product and railing, compared with roughly $25-$55 for a basic treated-wood deck. Composite can reduce routine staining and sealing, but may require different framing details and does not eliminate cleaning or repair expenses.
For wood, periodic cleaning and sealing or staining may cost about $1-$4 per square foot when professionally done. Treated lumber should dry adequately before coating; follow the product instructions and local conditions. A low initial price may not be the lowest long-term expense if the deck will need repeated maintenance or extensive board replacement.
Which choices lower the treated-wood deck estimate
The most controllable savings usually come from simplifying the plan. A rectangular layout, one level, standard board lengths, and stairs only where needed reduce cutting and framing complexity. Keeping the deck close to grade can avoid taller posts and extensive guardrails when local code permits. Do not reduce joist size, footing depth, or attachment hardware below the approved structural design.
Control the scope before asking contractors to sharpen their bids. Specify the same square footage, height, railing length, number of stair treads, lumber grade, and demolition plan for each quote. Comparing three written estimates can expose missing items, such as flashing, permits, cleanup, or disposal, that make an apparently cheap offer more expensive later.
Homeowners may save labor by clearing furniture, trimming vegetation, and confirming access before work begins, if the contractor agrees those tasks are safe and useful. Avoid buying lumber independently unless the installer accepts responsibility for quantities, grade, and delivery. Shortages, warped boards, or incompatible fasteners can erase the apparent savings.
Scheduling can also affect price. In busy spring and early-summer periods, contractors may have less flexibility; late-season bids can be more competitive in some markets, though weather can delay work. Request a written change-order rate for hidden rot, buried obstructions, or code-required repairs, and avoid paying for premium decorative upgrades that do not improve the deck’s function or required safety.