Composite deck cost in Kennewick, WA
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $12,900 – $25,800
- Per sq ft
- $43 – $85.50
- before permit
- Versus US midpoint
- +7%
- US $18,100
- Rank of 300 metros
- #46
- 1 = most expensive
Kennewick homeowners pay roughly $12,900 to $25,800 to build a composite deck at 300 sq ft, or $43 to $85.50 per sq ft (permit not included). Against the US midpoint, Kennewick is 7% higher. Carpenters earn a median of $30.92 an hour in the Kennewick area, 6% above the US median of $29.12.
Estimate your composite deck cost
Pick a size, a quality level and where you live. Prices update as you type.
Estimated cost for 300 sq ft in Kennewick, WA, standard level
$16,800 to $21,900
About $55.50 to $72.50 per sq ft before permits. Labor is about 60% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $6,550 | $8,550 |
| Labor | $10,100 | $13,200 |
| Permits and fees | $80 | $120 |
| Total | $16,800 | $21,900 |
Cost breakdown for 300 sq ft in Kennewick, WA
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $5,050 | $7,550 | $10,100 | 39% |
| Labor | $7,800 | $11,700 | $15,600 | 60% |
| Permits and fees | $50 | $100 | $150 | 1% |
| Total | $12,900 | $19,300 | $25,800 | 100% |
What is behind the Kennewick number
Labor is 60% of the midpoint bill here, against 60% nationally. The mix of trades behind this job is carpenters (80%), construction laborers (20%). We weight each trade's local median wage by that share and compare it with the national median. In Kennewick the blended ratio comes out at 1.08.
On the materials line, the BEA goods price index for the Kennewick metro is 105.0 (US = 100). The midpoint materials bill for 300 sq ft comes to $7,550, compared with $7,200 at national prices. Permit and inspection fees are scaled by the broader index (100.1) and land at $50 to $150.
Why two Kennewick quotes can differ
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.
Board grade
Composite materials run $16-$32 per sq ft and the installed price is $40-$80 per sq ft, including the substructure (HomeGuide).
When to schedule composite deck in Kennewick
We use NOAA's 1991-2020 climate normals for Pasco Tri Cities Ap (5 miles from the city center). These are 30-year monthly averages, not forecasts.
February through June and September through November are the stretches where exterior installation runs into the fewest weather problems in Kennewick (8 of 12 months). January and December have an average daytime high under 45°F; July and August have an average daytime high of 90°F or more.
In January and December the average high stays below 45°F. Sealants, adhesives and some materials, such as vinyl, are harder to install well in the cold, and short daylight cuts the working day.
Kennewick gets about 8 inches of precipitation in a normal year. The wettest months are January, November and December (1.0 inches in January). Inside the workable window, June and September are the driest, at 0.6 and 0.3 inches. The station averages about 55 days a year at 90°F or above.
Does the season change the price? Probably, but we do not have a sourced seasonal price curve, so the estimator shows a year-round figure and does not adjust by month. When you collect quotes, ask whether scheduling in a slower month gets a better rate.
| Month | Avg high °F | Avg low °F | Precip (in) | For this job |
|---|---|---|---|---|
| Jan | 41 | 28 | 1.0 | Cold |
| Feb | 49 | 28 | 0.6 | Workable |
| Mar | 59 | 33 | 0.7 | Workable |
| Apr | 67 | 38 | 0.7 | Workable |
| May | 77 | 46 | 0.7 | Workable |
| Jun | 83 | 53 | 0.6 | Workable |
| Jul | 93 | 57 | 0.1 | Hot |
| Aug | 91 | 56 | 0.3 | Hot |
| Sep | 81 | 48 | 0.3 | Workable |
| Oct | 66 | 38 | 0.7 | Workable |
| Nov | 50 | 32 | 0.9 | Workable |
| Dec | 41 | 27 | 1.0 | Cold |
Kennewick: what basic, standard and premium work costs
Three bands are cut from the same cited range and localized for Kennewick wages and prices. They overlap on purpose: a good standard job and a modest premium job can cost the same. The grid below prices the same bands at 4 common sizes.
Basic
$12,900 to $18,100
Entry-level composite boards, low deck, simple shape
Standard
$16,800 to $21,900
Mid-grade capped boards with railing and stairs
Premium
$20,600 to $25,800
Premium capped or PVC boards, multi-level, hidden fasteners
| Size | Basic | Standard | Premium |
|---|---|---|---|
| 10x12 (120 sq ft) | $5,200 – $7,250 | $6,750 – $8,850 | $8,300 – $10,400 |
| 12x12 (144 sq ft) | $6,200 – $8,700 | $8,100 – $10,600 | $9,950 – $12,500 |
| 16x20 (320 sq ft) | $13,700 – $19,200 | $17,900 – $23,400 | $22,000 – $27,500 |
| 20x20 (400 sq ft) | $17,200 – $24,000 | $22,300 – $29,200 | $27,500 – $34,400 |
Local wages behind the labor line
Wages are the part of this estimate that changes most from town to town. 2 trades carry the job here, and each is compared with its US median. The weighted result for Kennewick is 1.08 times the national level.
For carpenters (47-2031, weighted 80%) the local median is $30.92 an hour, which is 6% above the national $29.12. The middle half of them earn between $29.03 and $48.19 an hour. BLS counts 1,310 of them working in the area, 101.2 for every 10,000 jobs (US: 43.1), so the local bench is deeper than average.
Construction laborers (47-2061), 20% of the weighting: a median of $26.32 an hour, 16% above the US median of $22.66. The middle half of them earn between $21.79 and $33.92 an hour. About 1,110 work in the metro. That is 85.7 per 10,000 jobs, compared with 70.5 nationally, which suggests plenty of local crews to bid.
Quotes come from real crews, not medians. If the carpenters on your job are paid at the 75th percentile ($48.19 an hour) instead of the median, the labor line grows by about $5,100. At the 25th percentile ($29.03) it shrinks by about $560. The total moves by 26.5% or 2.9%, so wages alone rarely explain a quote that is far outside our range.
For context on the local economy, BLS counts 129,490 jobs in the Kennewick-Richland area. That makes it the 169th largest of the 300 metros we cover, with 0.08% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 80% | $29.03 | $30.92 | $48.19 | $29.12 | 1.06 | metro |
| Construction laborers (47-2061) | 20% | $21.79 | $26.32 | $33.92 | $22.66 | 1.16 | metro |
| Blended | 100% | 1.08 | |||||
Related projects, priced for Kennewick
Because every project leans on different trades, Kennewick's wage level does not move all prices equally. Against the US midpoint, concrete patio runs +16% and wood deck +6%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Wood deck | 300 sq ft | $8,050 – $16,100 | +6% |
| Concrete patio | 300 sq ft | $1,400 – $4,650 | +16% |
| Paver patio | 300 sq ft | $3,450 – $6,250 | +15% |
| Gutters | 160 linear ft | $1,500 – $4,750 | +14% |
Is Kennewick cheap or dear? The local comparison
Contractors rarely work more than an hour or two from home, so the neighboring metros set a rough ceiling and floor for your quotes. Midpoints for 300 sq ft range from $17,400 to $21,200 across Kennewick and its five closest metros.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Kennewick, WAthis page | $12,900 – $25,800 | $19,300 | |
| Yakima, WA70 miles | $12,600 – $25,200 | $18,900 | −2% |
| Spokane, WA140 miles | $12,500 – $25,100 | $18,800 | −3% |
| Seattle, WA145 miles | $14,100 – $28,300 | $21,200 | +10% |
| Coeur d'Alene, ID150 miles | $11,600 – $23,200 | $17,400 | −10% |
| Portland, OR165 miles | $13,800 – $27,600 | $20,700 | +7% |
| Washington (statewide) | $13,900 – $27,800 | $20,800 | +8% |
| United States | $12,100 – $24,200 | $18,100 | −6% |
Across 300 US metros, Kennewick comes in at #46 from the top. The priciest is Honolulu, HI at $25,200; the cheapest is Brownsville, TX at $13,500 (midpoints, 300 sq ft). Statewide, Kennewick is 7% below the Washington figure.
Other Washington metros
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Seattle, WA | 2,086,210 jobs | $14,100 – $28,300 | $21,200 | +10% |
| Spokane, WA | 255,820 jobs | $12,500 – $25,100 | $18,800 | −3% |
| Olympia, WA | 130,300 jobs | $12,700 – $25,500 | $19,100 | −1% |
| Yakima, WA | 97,010 jobs | $12,600 – $25,200 | $18,900 | −2% |
| Bremerton, WA | 93,740 jobs | $12,900 – $25,900 | $19,400 | +1% |
| Bellingham, WA | 91,390 jobs | $13,800 – $27,700 | $20,800 | +7% |
Cities with a workforce like Kennewick's
Big cities and small ones price differently, so here is Kennewick against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Waco, TX | 129,860 jobs | $10,200 – $20,400 | $15,300 | −21% |
| Elkhart, IN | 127,730 jobs | $12,300 – $24,600 | $18,400 | −5% |
| Olympia, WA | 130,300 jobs | $12,700 – $25,500 | $19,100 | −1% |
| Norwich, CT | 126,450 jobs | $12,400 – $24,900 | $18,700 | −3% |
Extras that change the Kennewick total
Extras are quoted nationally and then scaled to Kennewick by the average of the local wage index (1.08) and goods index (1.05), a factor of 1.07. Tick any of them in the estimator above to add them to your total. Treat these as planning figures: an add-on touches different trades than the main job, so the scaling is an approximation.
| Add-on | Local range |
|---|---|
| Add a deck railing (approx. 0.3 ft per sq ft) | $1,900 – $5,750 |
Get 3 local quotes
Tell us about the job and we will try to connect you with up to three local contractors for written quotes. It is free and you are under no obligation to hire. Your estimate of $16,800 to $21,900 for Kennewick, WA is attached.
Detailed composite deck report for Kennewick, WA, $9
Multi-page report for Kennewick, WA: low, typical and high cost, a line-item breakdown of materials and labor by trade, permit notes, the best months to schedule, a quote comparison sheet, red flags, questions for contractors, checklists and every source. 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 Kennewick: your questions
+How much does it cost to build a composite deck in Kennewick?
For 300 sq ft, expect $12,900 to $25,800 in the Kennewick area. A standard-spec job lands at $16,800 to $21,900. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for composite deck in Kennewick?
About $43 to $85.50 per sq ft for materials and labor, plus $50 to $150 for the permit if one is needed. The US range is $40 to $80.
+Is composite deck cheaper in Kennewick or Yakima?
Yakima is 70 miles away. The midpoint for 300 sq ft there is $18,900, which is 2% less than Kennewick ($19,300). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Kennewick?
About 60% at the midpoint, or $11,700 out of $19,300. Materials are 39% and permits 1%. Nationally, labor is 60%.
+What would 16x20 (320 sq ft) cost in Kennewick?
$13,700 to $27,500. Pick a different size in the estimator above to get your own number.
+Does composite deck need a permit in Kennewick?
Often, but rules are set by your city or county building office, so call before you hire. Budget $50 to $150 for fees in the Kennewick area (our national range of $50 to $150 scaled by the local price level).
+Is Kennewick expensive for composite deck compared with the rest of Washington?
Kennewick is 7% below the Washington statewide estimate ($20,800 at the midpoint). We cover 7 metros in Washington; see the state page to compare them.
+What do carpenters earn in Kennewick?
The BLS median is $30.92 an hour in the Kennewick area, compared with $29.12 nationally. The 25th to 75th percentile range is $29.03 to $48.19.
+What do basic and premium composite deck work cost in Kennewick?
For 300 sq ft, basic work runs $12,900 to $18,100 and premium work $20,600 to $25,800. Basic means: entry-level composite boards, low deck, simple shape. Premium means: premium capped or PVC boards, multi-level, hidden fasteners.
+When is the best time to build a composite deck in Kennewick?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are February through June and September through November. June and September are typically the driest of those months. Local contractors' schedules matter as much as the weather, so book early for the busy months.
+What does "add a deck railing" add in Kennewick?
$1,900 to $5,750 for 300 sq ft, from a national range scaled by the local wage and goods indexes.
Composite deck near Kennewick
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