Composite deck cost in Anchorage, AK
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $13,800 – $27,700
- Per sq ft
- $46 – $92
- before permit
- Versus US midpoint
- +15%
- US $18,100
- Rank of 300 metros
- #23
- 1 = most expensive
A composite deck in Anchorage, AK usually costs $13,800 to $27,700 for 300 sq ft. That works out to about $46 to $92 per sq ft before permits. Compared with the national midpoint that is $2,700 more. Carpenters earn a median of $35.00 an hour in the Anchorage area, 20% above the US median of $29.12.
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Estimated cost for 300 sq ft in Anchorage, AK, standard level
$18,000 to $23,600
About $60 to $78 per sq ft before permits. Labor is about 62% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $6,700 | $8,750 |
| Labor | $11,200 | $14,700 |
| Permits and fees | $85 | $130 |
| Total | $18,000 | $23,600 |
Cost breakdown for 300 sq ft in Anchorage, AK
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $5,150 | $7,750 | $10,300 | 37% |
| Labor | $8,650 | $13,000 | $17,300 | 62% |
| Permits and fees | $55 | $110 | $160 | 1% |
| Total | $13,800 | $20,800 | $27,700 | 100% |
What is behind the Anchorage number
We price the labor side from BLS wage data for 2 trades: carpenters at 80%, construction laborers at 20%. Weighted together, Anchorage wages are 1.20 times the national level. Labor makes up about 62% of the midpoint estimate (60% at national prices).
Materials are scaled with BEA's regional price parity for goods. Anchorage is at 107.3 against 100 for the US, so a materials line of $7,200 nationally becomes $7,750 here (midpoint, 300 sq ft). Permits follow the all-items index of 105.4: $55 to $160.
What local crews earn in Anchorage
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 Anchorage the blend is 1.20.
Carpenters (47-2031), 80% of the weighting: a median of $35.00 an hour, 20% above the US median of $29.12. The middle half of them earn between $28.72 and $44.15 an hour. About 1,460 work in the metro. That is 82.5 per 10,000 jobs, compared with 43.1 nationally, which suggests plenty of local crews to bid.
For construction laborers (47-2061, weighted 20%) the local median is $27.00 an hour, which is 19% above the national $22.66. The middle half of them earn between $22.90 and $34.85 an hour. BLS counts 1,860 of them working in the area, 105.1 for every 10,000 jobs (US: 70.5), so the local bench is deeper than average.
A quick sensitivity check: moving the lead trade (carpenters) from the median to the 75th percentile wage adds about $2,700 to the midpoint estimate; the 25th percentile takes off about $1,850. That is a swing of roughly 9.0% to 13.1% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Anchorage has 177,050 jobs in total (BLS, May 2025), ranking 131st 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% | $28.72 | $35.00 | $44.15 | $29.12 | 1.20 | metro |
| Construction laborers (47-2061) | 20% | $22.90 | $27.00 | $34.85 | $22.66 | 1.19 | metro |
| Blended | 100% | 1.20 | |||||
Extras that change the Anchorage total
Add-ons start from national price ranges and are scaled by 1.14 for Anchorage, which is the average of the area's wage index (1.20) and goods price index (1.07). The estimator above can add them to your total.
| Add-on | Local range |
|---|---|
| Add a deck railing (approx. 0.3 ft per sq ft) | $2,050 – $6,150 |
Anchorage: what basic, standard and premium work costs
The cited range is split into basic, standard and premium bands, then scaled to Anchorage. 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
$13,800 to $19,400
Entry-level composite boards, low deck, simple shape
Standard
$18,000 to $23,600
Mid-grade capped boards with railing and stairs
Premium
$22,200 to $27,700
Premium capped or PVC boards, multi-level, hidden fasteners
| Size | Basic | Standard | Premium |
|---|---|---|---|
| 10x12 (120 sq ft) | $5,550 – $7,800 | $7,250 – $9,500 | $8,950 – $11,200 |
| 12x12 (144 sq ft) | $6,650 – $9,350 | $8,700 – $11,400 | $10,700 – $13,400 |
| 16x20 (320 sq ft) | $14,800 – $20,700 | $19,200 – $25,100 | $23,700 – $29,600 |
| 20x20 (400 sq ft) | $18,400 – $25,800 | $24,000 – $31,400 | $29,500 – $36,900 |
Anchorage 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, Eagle Rvr Nature Ctr (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 Anchorage are April through September: 6 of 12. Outside them, January, February, March, October, November and December have an average daytime high under 45°F.
In January, February, March, October, November 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.
Anchorage gets about 23 inches of precipitation in a normal year. The wettest months are August, September and October (3.6 inches in September). Inside the workable window, April and May are the driest, at 0.8 and 0.9 inches.
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 | 21 | 6 | 2.3 | Cold |
| Feb | 28 | 12 | 1.6 | Cold |
| Mar | 35 | 15 | 1.6 | Cold |
| Apr | 47 | 27 | 0.8 | Workable |
| May | 58 | 36 | 0.9 | Workable |
| Jun | 65 | 44 | 1.3 | Workable |
| Jul | 67 | 48 | 1.7 | Workable |
| Aug | 65 | 45 | 2.6 | Workable |
| Sep | 56 | 37 | 3.6 | Workable |
| Oct | 42 | 26 | 2.5 | Cold |
| Nov | 26 | 13 | 1.7 | Cold |
| Dec | 23 | 9 | 2.0 | Cold |
Why two Anchorage quotes can differ
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.
Is Anchorage 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 $18,800 to $21,200 across Anchorage and its five closest metros.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Anchorage, AKthis page | $13,800 – $27,700 | $20,800 | |
| Bellingham, WA1410 miles | $13,800 – $27,700 | $20,800 | level |
| Bremerton, WA1450 miles | $12,900 – $25,900 | $19,400 | −6% |
| Seattle, WA1480 miles | $14,100 – $28,300 | $21,200 | +2% |
| Olympia, WA1485 miles | $12,700 – $25,500 | $19,100 | −8% |
| Spokane, WA1570 miles | $12,500 – $25,100 | $18,800 | −9% |
| Alaska (statewide) | $14,000 – $28,000 | $21,000 | +1% |
| United States | $12,100 – $24,200 | $18,100 | −13% |
Out of the 300 metros we cover, Anchorage ranks #23 for the cost of this job (#1 is the most expensive). Statewide, Anchorage is 1% below the Alaska figure.
Anchorage is the only Alaska metro we cover, so the statewide page is the only in-state comparison. It uses statewide wages, which include rural areas.
Metros of a similar size
Big cities and small ones price differently, so here is Anchorage against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Sioux Falls, SD | 178,590 jobs | $10,800 – $21,600 | $16,200 | −22% |
| Reading, PA | 174,670 jobs | $11,600 – $23,200 | $17,400 | −16% |
| Lafayette, LA | 179,570 jobs | $10,200 – $20,500 | $15,400 | −26% |
| Green Bay, WI | 174,550 jobs | $12,000 – $24,000 | $18,000 | −14% |
Related projects, priced for Anchorage
Jobs that often go together with composite deck are priced below at their usual sizes, using the same Anchorage wage and price inputs. Compared with national midpoints, concrete patio comes out highest (+25%) and paver patio lowest (+11%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Wood deck | 300 sq ft | $8,500 – $17,100 | +13% |
| Concrete patio | 300 sq ft | $1,500 – $5,050 | +25% |
| Paver patio | 300 sq ft | $3,350 – $6,050 | +11% |
| Gutters | 160 linear ft | $1,550 – $4,900 | +18% |
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 $18,000 to $23,600 for Anchorage, AK is attached.
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Multi-page report for Anchorage, AK: 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 Anchorage: your questions
+How much does it cost to build a composite deck in Anchorage?
For 300 sq ft, expect $13,800 to $27,700 in the Anchorage area. A standard-spec job lands at $18,000 to $23,600. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for composite deck in Anchorage?
About $46 to $92 per sq ft for materials and labor, plus $55 to $160 for the permit if one is needed. The US range is $40 to $80.
+Is composite deck cheaper in Anchorage or Bellingham?
Bellingham is 1410 miles away. The midpoint for 300 sq ft there is $20,800, which is 0% less than Anchorage ($20,800). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Anchorage?
About 62% at the midpoint, or $13,000 out of $20,800. Materials are 37% and permits 1%. Nationally, labor is 60%.
+What would 16x20 (320 sq ft) cost in Anchorage?
$14,800 to $29,600. Pick a different size in the estimator above to get your own number.
+Does composite deck need a permit in Anchorage?
Often, but rules are set by your city or county building office, so call before you hire. Budget $55 to $160 for fees in the Anchorage area (our national range of $50 to $150 scaled by the local price level).
+Is Anchorage expensive for composite deck compared with the rest of Alaska?
Anchorage is 1% below the Alaska statewide estimate ($21,000 at the midpoint).
+What do carpenters earn in Anchorage?
The BLS median is $35.00 an hour in the Anchorage area, compared with $29.12 nationally. The 25th to 75th percentile range is $28.72 to $44.15.
+What do basic and premium composite deck work cost in Anchorage?
For 300 sq ft, basic work runs $13,800 to $19,400 and premium work $22,200 to $27,700. 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 Anchorage?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are April through September. April and May 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 Anchorage?
$2,050 to $6,150 for 300 sq ft, from a national range scaled by the local wage and goods indexes.
Composite deck near Anchorage
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