Composite deck cost in Connecticut
Statewide estimate from BLS wages and BEA prices. Reviewed Nov 4, 2026.
- Statewide range (300 sq ft)
- $12,600 – $25,200
- Per sq ft
- $42 – $83.50
- before permit
- Versus US midpoint
- +5%
- US $18,100
- Metros covered
- 5
Across Connecticut, a composite deck costs about $12,600 to $25,200 for 300 sq ft. Statewide, that midpoint is 5% above the US figure of $18,100. Carpenters earn a median $30.80 an hour in Connecticut (US: $29.12).
Inside Connecticut, the metros we cover range from $18,600 (Waterbury) to $19,300 (New Haven) 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 Connecticut (statewide), standard level
$16,400 to $21,500
About $54.50 to $71 per sq ft before permits. Labor is about 62% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $6,050 | $7,950 |
| Labor | $10,200 | $13,400 |
| Permits and fees | $85 | $120 |
| Total | $16,400 | $21,500 |
Cost breakdown for 300 sq ft in Connecticut
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $4,650 | $7,000 | $9,350 | 37% |
| Labor | $7,850 | $11,800 | $15,700 | 62% |
| Permits and fees | $50 | $100 | $160 | 1% |
| Total | $12,600 | $18,900 | $25,200 | 100% |
Why two Connecticut 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.
Which Connecticut city is cheapest for composite deck?
1 of the 5 metros sit above the statewide midpoint of $18,900, and the top-to-bottom gap is 4%. 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 |
|---|---|---|---|
| New Haven, CT | $12,800 – $25,700 | $19,300 | +2% |
| Hartford, CT | $12,600 – $25,300 | $18,900 | level |
| Bridgeport, CT | $12,500 – $25,100 | $18,800 | level |
| Norwich, CT | $12,400 – $24,900 | $18,700 | −1% |
| Waterbury, CT | $12,400 – $24,800 | $18,600 | −2% |
What carpenters and the other trades earn in Connecticut
Connecticut'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 1.09 times the national level.
Carpenters (47-2031), 80% of the weighting: a median of $30.80 an hour, 6% above the US median of $29.12. The middle half of them earn between $27.66 and $38.86 an hour. About 5,160 work in the state. That is 30.4 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 $28.03 an hour, which is 24% above the national $22.66. The middle half of them earn between $22.92 and $34.98 an hour. BLS counts 7,360 of them working in the state, 43.4 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 ($38.86 an hour) would add about $2,400 to the statewide midpoint; one at the 25th percentile ($27.66) would take off about $930. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.
BLS counts 1,696,170 jobs across Connecticut (May 2025), which is 1.1% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 80% | $27.66 | $30.80 | $38.86 | $29.12 | 1.06 | state |
| Construction laborers (47-2061) | 20% | $22.92 | $28.03 | $34.98 | $22.66 | 1.24 | state |
| Blended | 100% | 1.09 | |||||
Connecticut against its neighbors
Connecticut ranks 11 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. Connecticut sits at $18,900. The five states closest by workforce center are listed below.
| State | Distance | Range | Midpoint | vs. here |
|---|---|---|---|---|
| New York | 80 miles away | $13,800 – $27,600 | $20,700 | +9% |
| Rhode Island | 80 miles away | $12,200 – $24,600 | $18,400 | −3% |
| Massachusetts | 110 miles away | $13,900 – $27,800 | $20,900 | +10% |
| New Hampshire | 110 miles away | $12,100 – $24,300 | $18,200 | −4% |
| New Jersey | 150 miles away | $13,200 – $26,500 | $19,900 | +5% |
Basic, standard or premium: Connecticut 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
$12,600 to $17,700
Entry-level composite boards, low deck, simple shape
Standard
$16,400 to $21,500
Mid-grade capped boards with railing and stairs
Premium
$20,200 to $25,200
Premium capped or PVC boards, multi-level, hidden fasteners
| Size | Basic | Standard | Premium |
|---|---|---|---|
| 10x12 (120 sq ft) | $5,050 – $7,100 | $6,600 – $8,650 | $8,150 – $10,200 |
| 12x12 (144 sq ft) | $6,050 – $8,500 | $7,900 – $10,400 | $9,750 – $12,200 |
| 16x20 (320 sq ft) | $13,400 – $18,800 | $17,500 – $22,900 | $21,500 – $26,900 |
| 20x20 (400 sq ft) | $16,800 – $23,500 | $21,800 – $28,600 | $26,900 – $33,600 |
Connecticut seasons and composite deck
Weather decides when exterior installation can happen, and Connecticut 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.
Every Connecticut metro on the list has 9 comfortable months, though rainfall ranges from 42 inches a year in New Haven to 52 in Norwich.
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 |
|---|---|---|---|---|
| Hartford | 20 | 85 | 43 | 9: March through November |
| Bridgeport | 24 | 83 | 44 | 9: March through November |
| New Haven | 23 | 82 | 42 | 9: March through November |
| Waterbury | 19 | 84 | 45 | 9: March through November |
| Norwich | 21 | 84 | 52 | 9: March through November |
Related projects, priced for Connecticut
Each project weights the trades differently, so Connecticut's wage level does not push every price by the same amount. Compared with the US midpoint, paver patio is +10% and wood deck +3%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Wood deck | 300 sq ft | $7,750 – $15,500 | +3% |
| Concrete patio | 300 sq ft | $1,300 – $4,250 | +6% |
| Paver patio | 300 sq ft | $3,300 – $6,000 | +10% |
| Gutters | 160 linear ft | $1,400 – $4,450 | +7% |
Extras that change the Connecticut total
Add-ons start from national price ranges and are scaled by 1.03 for Connecticut, which is the average of the area's wage index (1.09) and goods price index (0.97). The estimator above can add them to your total.
| Add-on | Local range |
|---|---|
| Add a deck railing (approx. 0.3 ft per sq ft) | $1,850 – $5,600 |
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Composite deck in Connecticut: your questions
+How much does it cost to build a composite deck in Connecticut?
$12,600 to $25,200 for 300 sq ft, using statewide wages and prices. Metro areas inside Connecticut can sit above or below that.
+Which city in Connecticut is cheapest for composite deck?
Waterbury at about $18,600 (midpoint, 300 sq ft). The priciest is New Haven at $19,300.
+Is composite deck cheaper in Connecticut than the US average?
It is 5% more expensive: $18,900 against $18,100 for 300 sq ft at the midpoint.
+What share of the price is labor in Connecticut?
About 62% ($11,800). Materials are 37%. Statewide labor for this job is weighted 1.09x the national wage level.
+What do carpenters earn in Connecticut?
The BLS statewide median is $30.80 an hour, against $29.12 for the US. The 25th to 75th percentile range is $27.66 to $38.86.
+Where does Connecticut rank for composite deck costs?
11th most expensive of 51 (the 50 states plus DC) at the midpoint, $18,900 for 300 sq ft. Rank 1 is the costliest.
+What do basic and premium composite deck work cost in Connecticut?
For 300 sq ft, basic work runs $12,600 to $17,700 and premium work $20,200 to $25,200. 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 Connecticut?
Yes where winters or summers are hard. Of the Connecticut metros we cover, Hartford has the most comfortable months (9 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 Connecticut?
$1,850 to $5,600 for 300 sq ft, from a national range scaled by the statewide wage and goods indexes.
Composite deck by city in Connecticut
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