Build Deck Cost in 2026
Average cost: $15 - $50 per square foot
A typical average deck (350 sq ft) costs $5,250 - $17,500
Includes materials and professional labor.
Deck construction adds an outdoor living space attached to your home. A 350 sq ft composite deck with railings costs $10,500-$17,500 in 2026, including footings, framing, decking, and permits.
Calculate Your Cost
Your Estimated Cost
$5,250 - $17,500
Based on 350 square foots in National Average
Prices updated March 2026
Cost Breakdown
What This Means
For 350 square foots in National Average, expect to pay $5,250-$17,500 with mid-range materials that balance quality and cost.
About $5,688 goes to materials and $3,981 covers labor. At $33 per square foot, your project is right at the national average.
This is a moderate investment—about the cost of a used car. Many homeowners finance projects this size with a home equity line or contractor financing.
Tips for your project:
- •DIY could save you $4,550, but budget extra time and factor in your skill level.
- •A smaller 245 square foot project would run about $7,962.
- •Always get 3 quotes—prices can vary 20-30% between contractors.
What If...
Budget materials
Use builder-grade or economy materials
$3,938 - $13,125
-$3,500 (-31%)
Premium materials
Upgrade to high-end finishes
$7,088 - $23,625
+$2,800 (25%)
Smaller (263 square foots)
Reduce project scope by 25%
$3,945 - $13,150
-$3,485 (-31%)
Larger (438 square foots)
Expand project scope by 25%
$6,570 - $21,900
+$1,765 (16%)
DIY installation
Do the work yourself (materials only)
$5,801 - $7,849
-$4,550 (-40%)
What to Ask Your Contractor
1Are you licensed and insured for this type of work?
Are you licensed and insured for this type of work?
Why ask: Protects you from liability if someone gets hurt on your property.
Red flag: Hesitation or claims that insurance "isn't necessary" for this job.
2Can I see references from similar projects?
Can I see references from similar projects?
Why ask: Build Deck requires specific experience. Past work shows capability.
Red flag: Unable to provide any references or only has very old ones.
3What's included in your $11,375 quote—and what's not?
What's included in your $11,375 quote—and what's not?
Why ask: Prevents surprise charges for permits, disposal, or finishing work.
Red flag: Vague answers or unwillingness to put details in writing.
4Who handles the permit application and inspection scheduling?
Who handles the permit application and inspection scheduling?
Why ask: Permits ensure work meets code and protect your home's resale value.
Red flag: Resistance to pulling permits or suggesting you "don't need one."
5What's your payment schedule, and what triggers each payment?
What's your payment schedule, and what triggers each payment?
Why ask: Standard is a small deposit, then payments tied to milestones.
Red flag: Demanding 50%+ upfront or full payment before work begins.
Show 1 more questions
6What's the realistic timeline, and what could cause delays?
What's the realistic timeline, and what could cause delays?
Why ask: Honest contractors set expectations. Weather, material backorders, and inspections cause delays.
Red flag: Unrealistically short timelines or guarantees of "no delays."
Cost Breakdown
| Component | Percentage | Cost Range* |
|---|---|---|
| Materials | 50% | $2,625 - $8,750 |
| Labor | 35% | $1,837 - $6,125 |
| Permits, footings & hardware | 15% | $788 - $2,625 |
| Total | 100% | $5,250 - $17,500 |
*Based on average deck (350 sq ft) at national average prices.
What Affects the Cost
Decking material
Pressure-treated wood costs $15-25/sf, cedar $25-35/sf, composite $30-50/sf
Deck height
Ground-level decks are cheapest; elevated decks requiring stairs add 20-40%
Design complexity
Simple rectangles cost less; angles, curves, and built-in seating add 15-30%
Railings
Wood railings cost $20-40/LF, composite $40-70/LF, cable or glass $100-200/LF
Impact: H = High, M = Medium, L = Low
DIY vs. Hire a Contractor
🔨 DIY
Risk: Medium — structural errors are dangerous; permits and inspections required
👷 Hire a ProRecommended
Includes: Professional installation, cleanup, warranty, and permit handling.
Cost by State
| State | Cost Range (per square foot) | vs. National Avg |
|---|---|---|
| Alabama | $12 - $41 | -18% |
| Alaska | $21 - $69 | +38% |
| Arizona | $15 - $51 | +2% |
| Arkansas | $12 - $40 | -20% |
| California | $20 - $68 | +35% |
| Colorado | $18 - $59 | +18% |
| Connecticut | $19 - $63 | +25% |
| Delaware | $17 - $55 | +10% |
| Florida | $16 - $52 | +4% |
| Georgia | $15 - $49 | -2% |
| Hawaii | $22 - $73 | +45% |
| Idaho | $15 - $49 | -2% |
| Illinois | $17 - $56 | +12% |
| Indiana | $14 - $48 | -5% |
| Iowa | $14 - $46 | -8% |
| Kansas | $14 - $45 | -10% |
| Kentucky | $13 - $44 | -12% |
| Louisiana | $14 - $45 | -10% |
| Maine | $16 - $54 | +8% |
| Maryland | $18 - $60 | +20% |
| Massachusetts | $19 - $64 | +28% |
| Michigan | $15 - $49 | -2% |
| Minnesota | $17 - $55 | +10% |
| Mississippi | $12 - $39 | -22% |
| Missouri | $14 - $46 | -8% |
| Montana | $15 - $50 | Avg |
| Nebraska | $14 - $45 | -10% |
| Nevada | $15 - $51 | +2% |
| New Hampshire | $17 - $57 | +15% |
| New Jersey | $19 - $62 | +24% |
| New Mexico | $13 - $43 | -15% |
| New York | $20 - $66 | +32% |
| North Carolina | $15 - $49 | -2% |
| North Dakota | $13 - $42 | -16% |
| Ohio | $14 - $48 | -4% |
| Oklahoma | $13 - $44 | -12% |
| Oregon | $18 - $60 | +20% |
| Pennsylvania | $16 - $53 | +6% |
| Rhode Island | $18 - $59 | +18% |
| South Carolina | $14 - $45 | -10% |
| South Dakota | $13 - $42 | -16% |
| Tennessee | $14 - $46 | -8% |
| Texas | $14 - $47 | -6% |
| Utah | $15 - $50 | Avg |
| Vermont | $17 - $56 | +12% |
| Virginia | $16 - $54 | +8% |
| Washington | $18 - $61 | +22% |
| West Virginia | $12 - $41 | -18% |
| Wisconsin | $15 - $51 | +2% |
| Wyoming | $13 - $42 | -16% |
Frequently Asked Questions
How much does it cost to build a 12x16 deck?
A 12x16 (192 sq ft) deck costs $2,900-$9,600. Pressure-treated wood runs $2,900-$4,800. Cedar costs $4,800-$6,700. Composite decking ranges from $5,800-$9,600. All prices include labor, railings, and basic stairs.
Is it cheaper to build a deck yourself?
DIY saves 35-45% on labor but requires tools, skills, and significant time. Material costs alone are $10-30/sf. Building permits and inspections are still required. DIY makes sense for skilled homeowners with time; hire pros for elevated or complex decks.
How long does it take to build a deck?
Professional deck construction takes 1-3 weeks depending on size and complexity. Simple ground-level decks can be completed in 3-5 days. Large elevated decks with stairs and complex railings take 2-4 weeks. Add 1-3 weeks for permits.
What is the cheapest deck material?
Pressure-treated pine is cheapest at $2-4/sf for materials. It is strong and holds stain well but requires regular maintenance (sealing every 1-2 years). Cedar ($4-8/sf) costs more but is naturally rot-resistant. Composite has higher upfront cost but minimal maintenance.
Does a deck add value to your home?
Decks recoup 65-80% of costs at resale. Wood decks return slightly more than composite. Decks also help homes sell faster by expanding outdoor living space. Best ROI in climates with long outdoor seasons.
Related Projects
Need to calculate materials for your project? Try our sister site CalcOnce.com for concrete, lumber, paint, and more calculators.
Return on Investment
Recoups 65-80% at resale; expands living space