Composite deck cost in Columbia, SC
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $10,500 – $21,100
- Per sq ft
- $35 – $70
- before permit
- Versus US midpoint
- −12%
- US $18,100
- Rank of 300 metros
- #240
- 1 = most expensive
A composite deck in Columbia, SC usually costs $10,500 to $21,100 for 300 sq ft. That works out to about $35 to $70 per sq ft before permits. Compared with the national midpoint that is $2,250 less. Carpenters earn a median of $23.11 an hour in the Columbia area, 21% below the US median of $29.12.
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Estimated cost for 300 sq ft in Columbia, SC, standard level
$13,700 to $18,000
About $45.50 to $59.50 per sq ft before permits. Labor is about 56% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $6,000 | $7,850 |
| Labor | $7,650 | $10,000 |
| Permits and fees | $75 | $110 |
| Total | $13,700 | $18,000 |
Cost breakdown for 300 sq ft in Columbia, SC
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $4,600 | $6,950 | $9,250 | 44% |
| Labor | $5,850 | $8,800 | $11,700 | 56% |
| Permits and fees | $45 | $95 | $140 | 1% |
| Total | $10,500 | $15,800 | $21,100 | 100% |
Why Columbia prices look the way they do
We price the labor side from BLS wage data for 2 trades: carpenters at 80%, construction laborers at 20%. Weighted together, Columbia wages are 0.82 times the national level. Labor makes up about 56% of the midpoint estimate (60% at national prices).
Materials are scaled with BEA's regional price parity for goods. Columbia is at 96.3 against 100 for the US, so a materials line of $7,200 nationally becomes $6,950 here (midpoint, 300 sq ft). Permits follow the all-items index of 93.7: $45 to $140.
Composite deck: what moves the price in Columbia
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).
Labor
Labor for composite is $24-$48 per sq ft, higher than wood because the boards need extra parts and more careful assembly.
What local crews earn in Columbia
The labor line is built from BLS wage data, one trade at a time. This job draws on 2 trades. We compare each trade's local median with the US median, weight the ratios by how much of the job each trade does, and apply the blend to the national labor cost. For Columbia the blend is 0.82.
Carpenters (47-2031), 80% of the weighting: a median of $23.11 an hour, 21% below the US median of $29.12. The middle half of them earn between $20.13 and $28.49 an hour. About 880 work in the metro. That is 22.3 per 10,000 jobs, compared with 43.1 nationally, so expect fewer local crews to bid.
For construction laborers (47-2061, weighted 20%) the local median is $20.49 an hour, which is 10% below the national $22.66. The middle half of them earn between $17.50 and $23.15 an hour. BLS counts 2,610 of them working in the area, 66.2 for every 10,000 jobs (US: 70.5), so the local bench is about average.
A quick sensitivity check: moving the lead trade (carpenters) from the median to the 75th percentile wage adds about $1,600 to the midpoint estimate; the 25th percentile takes off about $880. That is a swing of roughly 5.6% to 10.1% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Columbia has 394,200 jobs in total (BLS, May 2025), ranking 65th by size among the 300 metros on this site.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 80% | $20.13 | $23.11 | $28.49 | $29.12 | 0.79 | metro |
| Construction laborers (47-2061) | 20% | $17.50 | $20.49 | $23.15 | $22.66 | 0.90 | metro |
| Blended | 100% | 0.82 | |||||
Extras that change the Columbia total
Add-ons start from national price ranges and are scaled by 0.89 for Columbia, which is the average of the area's wage index (0.82) 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) | $1,600 – $4,800 |
Columbia: what basic, standard and premium work costs
The cited range is split into basic, standard and premium bands, then scaled to Columbia. Bands overlap, because plenty of standard jobs cost as much as a light premium one. Sizes run from 10x12 (120 sq ft) to 20x20 (400 sq ft).
Basic
$10,500 to $14,800
Entry-level composite boards, low deck, simple shape
Standard
$13,700 to $18,000
Mid-grade capped boards with railing and stairs
Premium
$16,900 to $21,100
Premium capped or PVC boards, multi-level, hidden fasteners
| Size | Basic | Standard | Premium |
|---|---|---|---|
| 10x12 (120 sq ft) | $4,250 – $5,950 | $5,550 – $7,250 | $6,800 – $8,550 |
| 12x12 (144 sq ft) | $5,100 – $7,150 | $6,650 – $8,700 | $8,150 – $10,200 |
| 16x20 (320 sq ft) | $11,200 – $15,800 | $14,600 – $19,100 | $18,000 – $22,500 |
| 20x20 (400 sq ft) | $14,000 – $19,700 | $18,300 – $23,900 | $22,500 – $28,100 |
What nearby projects cost in Columbia
Jobs that often go together with composite deck are priced below at their usual sizes, using the same Columbia wage and price inputs. Compared with national midpoints, concrete patio comes out highest (−8%) and wood deck lowest (−10%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Wood deck | 300 sq ft | $6,800 – $13,600 | −10% |
| Concrete patio | 300 sq ft | $1,150 – $3,650 | −8% |
| Paver patio | 300 sq ft | $2,750 – $4,950 | −9% |
| Gutters | 160 linear ft | $1,150 – $3,850 | −9% |
Is Columbia 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 $15,800 to $17,200 across Columbia and its five closest metros.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Columbia, SCthis page | $10,500 – $21,100 | $15,800 | |
| Augusta, GA70 miles | $11,500 – $23,000 | $17,200 | +9% |
| Spartanburg, SC70 miles | $10,900 – $21,800 | $16,300 | +3% |
| Florence, SC70 miles | $10,700 – $21,500 | $16,100 | +2% |
| Charlotte, NC75 miles | $10,900 – $21,900 | $16,400 | +4% |
| Greenville, SC90 miles | $10,800 – $21,600 | $16,200 | +2% |
| South Carolina (statewide) | $10,800 – $21,700 | $16,200 | +2% |
| United States | $12,100 – $24,200 | $18,100 | +14% |
Out of the 300 metros we cover, Columbia ranks #240 for the cost of this job (#1 is the most expensive). Statewide, Columbia is 2% below the South Carolina figure.
Elsewhere in South Carolina
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Greenville, SC | 434,900 jobs | $10,800 – $21,600 | $16,200 | +2% |
| Charleston, SC | 394,170 jobs | $10,800 – $21,600 | $16,200 | +2% |
| Spartanburg, SC | 165,150 jobs | $10,900 – $21,800 | $16,300 | +3% |
| Myrtle Beach, SC | 146,260 jobs | $10,400 – $20,800 | $15,600 | −2% |
| Florence, SC | 89,060 jobs | $10,700 – $21,500 | $16,100 | +2% |
| Hilton Head, SC | 81,920 jobs | $10,700 – $21,500 | $16,100 | +2% |
Metros of a similar size
Big cities and small ones price differently, so here is Columbia against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Des Moines, IA | 404,130 jobs | $11,900 – $23,900 | $17,900 | +13% |
| Charleston, SC | 394,170 jobs | $10,800 – $21,600 | $16,200 | +2% |
| Bridgeport, CT | 404,180 jobs | $12,500 – $25,100 | $18,800 | +19% |
| Boise, ID | 391,790 jobs | $11,000 – $22,000 | $16,500 | +4% |
Columbia weather and the composite deck calendar
Climate numbers on this page come from NOAA's 1991-2020 U.S. Climate Normals at the nearest suitable station, Columbia Owens Dwtn Ap (5 miles from the city center). They are 30-year averages, so any one year can run hotter, colder or wetter.
For exterior installation, the comfortable months in Columbia are September through May: 9 of 12. Outside them, June, July and August have an average daytime high of 90°F or more.
Columbia gets about 44 inches of precipitation in a normal year. The wettest months are June, July and August (4.8 inches in July). Inside the workable window, April and November are the driest, at 2.7 and 2.8 inches. The station averages about 83 days a year at 90°F or above.
We do not adjust the estimate by month, because we have no reliable published data on seasonal pricing. It is still worth asking contractors whether an off-peak start date changes their bid.
| Month | Avg high °F | Avg low °F | Precip (in) | For this job |
|---|---|---|---|---|
| Jan | 57 | 37 | 3.4 | Workable |
| Feb | 61 | 40 | 3.3 | Workable |
| Mar | 69 | 46 | 3.5 | Workable |
| Apr | 77 | 53 | 2.7 | Workable |
| May | 84 | 62 | 3.0 | Workable |
| Jun | 90 | 70 | 4.8 | Hot |
| Jul | 93 | 73 | 4.8 | Hot |
| Aug | 91 | 72 | 4.7 | Hot |
| Sep | 86 | 67 | 4.3 | Workable |
| Oct | 77 | 56 | 3.1 | Workable |
| Nov | 67 | 44 | 2.8 | Workable |
| Dec | 60 | 39 | 3.5 | Workable |
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 $13,700 to $18,000 for Columbia, SC is attached.
Detailed composite deck report for Columbia, SC, $9
Multi-page report for Columbia, SC: 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 Columbia: your questions
+How much does it cost to build a composite deck in Columbia?
For 300 sq ft, expect $10,500 to $21,100 in the Columbia area. A standard-spec job lands at $13,700 to $18,000. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for composite deck in Columbia?
About $35 to $70 per sq ft for materials and labor, plus $45 to $140 for the permit if one is needed. The US range is $40 to $80.
+Is composite deck cheaper in Columbia or Augusta?
Augusta is 70 miles away. The midpoint for 300 sq ft there is $17,200, which is 9% more than Columbia ($15,800). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Columbia?
About 56% at the midpoint, or $8,800 out of $15,800. Materials are 44% and permits 1%. Nationally, labor is 60%.
+What would 16x20 (320 sq ft) cost in Columbia?
$11,200 to $22,500. Pick a different size in the estimator above to get your own number.
+Does composite deck need a permit in Columbia?
Often, but rules are set by your city or county building office, so call before you hire. Budget $45 to $140 for fees in the Columbia area (our national range of $50 to $150 scaled by the local price level).
+Is Columbia expensive for composite deck compared with the rest of South Carolina?
Columbia is 2% below the South Carolina statewide estimate ($16,200 at the midpoint). We cover 7 metros in South Carolina; see the state page to compare them.
+What do carpenters earn in Columbia?
The BLS median is $23.11 an hour in the Columbia area, compared with $29.12 nationally. The 25th to 75th percentile range is $20.13 to $28.49.
+What do basic and premium composite deck work cost in Columbia?
For 300 sq ft, basic work runs $10,500 to $14,800 and premium work $16,900 to $21,100. 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 Columbia?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are September through May. April and November 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 Columbia?
$1,600 to $4,800 for 300 sq ft, from a national range scaled by the local wage and goods indexes.
Composite deck near Columbia
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