Composite deck cost in Missouri
Statewide estimate from BLS wages and BEA prices. Reviewed Nov 4, 2026.
- Statewide range (300 sq ft)
- $12,200 – $24,400
- Per sq ft
- $40.50 – $81
- before permit
- Versus US midpoint
- +1%
- US $18,100
- Metros covered
- 6
Missouri prices for composite deck: $12,200 to $24,400 for 300 sq ft, or $40.50 to $81 per sq ft without the permit. The state midpoint is 1% above the national one. Local wages for carpenters are $29.25 an hour.
Inside Missouri, the metros we cover range from $16,100 (Joplin) to $20,400 (St. Louis) at the midpoint. Pick your closest city in the table for a tighter number.
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Estimated cost for 300 sq ft in Missouri (statewide), standard level
$15,900 to $20,700
About $52.50 to $69 per sq ft before permits. Labor is about 62% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $6,000 | $7,850 |
| Labor | $9,800 | $12,800 |
| Permits and fees | $75 | $110 |
| Total | $15,900 | $20,700 |
Cost breakdown for 300 sq ft in Missouri
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $4,600 | $6,950 | $9,250 | 38% |
| Labor | $7,500 | $11,300 | $15,000 | 62% |
| Permits and fees | $45 | $90 | $140 | 0% |
| Total | $12,200 | $18,300 | $24,400 | 100% |
Why two Missouri quotes can differ
Board grade
Composite materials run $16-$32 per sq ft and the installed price is $40-$80 per sq ft, including the substructure (HomeGuide).
Labor
Labor for composite is $24-$48 per sq ft, higher than wood because the boards need extra parts and more careful assembly.
Drainage
Ground-level decks over poorly draining yards may need $1,000-$4,000 of drainage work first.
Engineering
Large or complex decks may need a structural engineer at $100-$220 an hour to get a permit.
What carpenters and the other trades earn in Missouri
Missouri's labor line is priced from 2 trades, each compared with its US median wage. After weighting by each trade's share of the work, the state comes out at 1.04 times the national level.
Carpenters (47-2031), 80% of the weighting: a median of $29.25 an hour, in line with the US median of $29.12. The middle half of them earn between $22.85 and $38.74 an hour. About 14,410 work in the state. That is 49.1 per 10,000 jobs, compared with 43.1 nationally, so the supply of crews looks typical.
For construction laborers (47-2061, weighted 20%) the local median is $27.28 an hour, which is 20% above the national $22.66. The middle half of them earn between $21.93 and $37.30 an hour. BLS counts 17,050 of them working in the state, 58.1 for every 10,000 jobs (US: 70.5), so the local bench is thinner than average.
A crew paid at the 75th percentile for carpenters ($38.74 an hour) would add about $2,800 to the statewide midpoint; one at the 25th percentile ($22.85) would take off about $1,900. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.
BLS counts 2,936,050 jobs across Missouri (May 2025), which is 1.9% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 80% | $22.85 | $29.25 | $38.74 | $29.12 | 1.00 | state |
| Construction laborers (47-2061) | 20% | $21.93 | $27.28 | $37.30 | $22.66 | 1.20 | state |
| Blended | 100% | 1.04 | |||||
Composite deck cost by metro in Missouri
1 of the 6 metros sit above the statewide midpoint of $18,300, and the top-to-bottom gap is 27%. Each row prices the default size with that metro's own BLS wages and BEA price levels, so the gap between rows is real local variation rather than a flat markup.
| Metro | Range (300 sq ft) | Midpoint | vs. state |
|---|---|---|---|
| St. Louis, MO | $13,600 – $27,200 | $20,400 | +11% |
| Kansas City, MO | $12,000 – $24,000 | $18,000 | −2% |
| Jefferson City, MO | $11,800 – $23,600 | $17,700 | −3% |
| Columbia, MO | $11,600 – $23,300 | $17,500 | −4% |
| Springfield, MO | $11,000 – $22,000 | $16,500 | −10% |
| Joplin, MO | $10,700 – $21,500 | $16,100 | −12% |
Weather windows across Missouri
Weather decides when exterior installation can happen, and Missouri is not uniform. The table uses NOAA's 1991-2020 climate normals from the weather station nearest each metro we cover, and counts the months that are neither cold nor hot enough to complicate the job.
Springfield has the longest comfortable season of the metros we cover in Missouri at 11 months (February through December); Kansas City has the shortest at 9 (February through June and August through November). Rainfall runs from 38 inches a year in Kansas City to 47 inches in Springfield.
We do not adjust prices by month, because we have no reliable published data on seasonal pricing. Timing is still worth raising when you collect bids.
| Metro | Jan avg low °F | Jul avg high °F | Precip (in/yr) | Comfortable months |
|---|---|---|---|---|
| St. Louis | 25 | 90 | 44 | 10: February through June and August through December |
| Kansas City | 22 | 90 | 38 | 9: February through June and August through November |
| Springfield | 23 | 88 | 47 | 11: February through December |
| Columbia | 23 | 89 | 45 | 10: February through November |
| Joplin | 25 | 90 | 46 | 10: September through June |
| Jefferson City | 23 | 89 | 40 | 11: February through December |
Add-ons priced for Missouri
Add-ons start from national price ranges and are scaled by 1.00 for Missouri, which is the average of the area's wage index (1.04) and goods price index (0.96). The estimator above can add them to your total.
| Add-on | Local range |
|---|---|
| Add a deck railing (approx. 0.3 ft per sq ft) | $1,800 – $5,400 |
Related projects, priced for Missouri
Each project weights the trades differently, so Missouri's wage level does not push every price by the same amount. Compared with the US midpoint, paver patio is +7% and gutters −1%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Wood deck | 300 sq ft | $7,550 – $15,100 | level |
| Concrete patio | 300 sq ft | $1,250 – $4,150 | +3% |
| Paver patio | 300 sq ft | $3,200 – $5,850 | +7% |
| Gutters | 160 linear ft | $1,300 – $4,150 | −1% |
Missouri versus the states around it
Missouri ranks 16 of 51 (the 50 states plus DC) for composite deck, where 1 is the most expensive. The costliest is Hawaii at $23,800 and the cheapest Oklahoma at $15,300, both for 300 sq ft at the midpoint. Missouri sits at $18,300. The five states closest by workforce center are listed below.
| State | Distance | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Iowa | 220 miles away | $11,500 – $23,100 | $17,300 | −6% |
| Arkansas | 230 miles away | $10,200 – $20,500 | $15,400 | −16% |
| Kansas | 250 miles away | $11,300 – $22,700 | $17,000 | −7% |
| Nebraska | 270 miles away | $10,800 – $21,600 | $16,200 | −11% |
| Illinois | 310 miles away | $14,400 – $28,900 | $21,600 | +18% |
Basic, standard or premium: Missouri prices
Bands overlap on purpose, since a good standard job can cost as much as a light premium one. Below are the three bands for the default size, then a grid from 10x12 (120 sq ft) to 20x20 (400 sq ft).
Basic
$12,200 to $17,100
Entry-level composite boards, low deck, simple shape
Standard
$15,900 to $20,700
Mid-grade capped boards with railing and stairs
Premium
$19,500 to $24,400
Premium capped or PVC boards, multi-level, hidden fasteners
| Size | Basic | Standard | Premium |
|---|---|---|---|
| 10x12 (120 sq ft) | $4,900 – $6,900 | $6,400 – $8,350 | $7,850 – $9,850 |
| 12x12 (144 sq ft) | $5,850 – $8,250 | $7,650 – $10,000 | $9,400 – $11,800 |
| 16x20 (320 sq ft) | $13,000 – $18,200 | $16,900 – $22,100 | $20,800 – $26,000 |
| 20x20 (400 sq ft) | $16,200 – $22,700 | $21,100 – $27,600 | $26,000 – $32,500 |
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Detailed composite deck report for Missouri, $9
The report lays out the composite deck numbers for Missouri line by line, with the local wage and price inputs, permit and timing notes, a quote comparison sheet and the full method. Save your estimate above, preview page 1 free, and unlock the full report for $9 one-time, or get every report with CostLocal Pro.
Composite deck in Missouri: your questions
+How much does it cost to build a composite deck in Missouri?
$12,200 to $24,400 for 300 sq ft, using statewide wages and prices. Metro areas inside Missouri can sit above or below that.
+Which city in Missouri is cheapest for composite deck?
Joplin at about $16,100 (midpoint, 300 sq ft). The priciest is St. Louis at $20,400.
+Is composite deck cheaper in Missouri than the US average?
It is 1% more expensive: $18,300 against $18,100 for 300 sq ft at the midpoint.
+What share of the price is labor in Missouri?
About 62% ($11,300). Materials are 38%. Statewide labor for this job is weighted 1.04x the national wage level.
+What do carpenters earn in Missouri?
The BLS statewide median is $29.25 an hour, against $29.12 for the US. The 25th to 75th percentile range is $22.85 to $38.74.
+Where does Missouri rank for composite deck costs?
16th most expensive of 51 (the 50 states plus DC) at the midpoint, $18,300 for 300 sq ft. Rank 1 is the costliest.
+What do basic and premium composite deck work cost in Missouri?
For 300 sq ft, basic work runs $12,200 to $17,100 and premium work $19,500 to $24,400. Basic means: entry-level composite boards, low deck, simple shape. Premium means: premium capped or PVC boards, multi-level, hidden fasteners.
+Does the season matter for composite deck in Missouri?
Yes where winters or summers are hard. Of the Missouri metros we cover, Springfield has the most comfortable months (11 of 12) based on NOAA 1991-2020 normals. Our prices do not change by month, so ask contractors whether they charge more or less in busy and slow seasons.
+What does "add a deck railing" add in Missouri?
$1,800 to $5,400 for 300 sq ft, from a national range scaled by the statewide wage and goods indexes.
Composite deck by city in Missouri
Where these numbers come from
Base prices are national ranges from the sources below. We scale labor by local BLS wages, materials by BEA goods prices and permits by the BEA all-items price level. Full method on the methodology page.
- HomeGuide: How Much Does Composite Decking Cost? (2026) (accessed November 4, 2026)
- HomeGuide: 2026 Building Permit Costs | Fees & Cost Calculator (accessed November 4, 2026)
- BLS Occupational Employment and Wage Statistics, May 2025
- BEA Regional Price Parities, 2024
- NOAA NCEI U.S. Climate Normals, 1991-2020