Composite deck cost in Baltimore, MD
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $12,300 – $24,700
- Per sq ft
- $41 – $82
- before permit
- Versus US midpoint
- +2%
- US $18,100
- Rank of 300 metros
- #75
- 1 = most expensive
Local price for a composite deck in the Baltimore area: $12,300 to $24,700 for 300 sq ft. The low end is a basic job on easy ground; the high end is a premium spec with harder access. The midpoint lands close to the US figure. Carpenters earn a median of $29.99 an hour in the Baltimore area, 3% above the US median of $29.12.
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Estimated cost for 300 sq ft in Baltimore, MD, standard level
$16,000 to $21,000
About $53 to $69.50 per sq ft before permits. Labor is about 60% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $6,400 | $8,350 |
| Labor | $9,550 | $12,500 |
| Permits and fees | $85 | $130 |
| Total | $16,000 | $21,000 |
Cost breakdown for 300 sq ft in Baltimore, MD
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $4,900 | $7,350 | $9,850 | 40% |
| Labor | $7,350 | $11,000 | $14,700 | 60% |
| Permits and fees | $50 | $100 | $160 | 1% |
| Total | $12,300 | $18,500 | $24,700 | 100% |
Why Baltimore prices look the way they do
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 Baltimore the blended ratio comes out at 1.02.
Materials are scaled with BEA's regional price parity for goods. Baltimore is at 102.4 against 100 for the US, so a materials line of $7,200 nationally becomes $7,350 here (midpoint, 300 sq ft). Permits follow the all-items index of 104.5: $50 to $160.
The best months for composite deck in Baltimore
Climate numbers on this page come from NOAA's 1991-2020 U.S. Climate Normals at the nearest suitable station, Md Sci Ctr Baltimore (in the city). They are 30-year averages, so any one year can run hotter, colder or wetter.
For exterior installation, the comfortable months in Baltimore are February through June and August through December: 10 of 12. Outside them, January has an average daytime high under 45°F, and July has an average daytime high of 90°F or more.
In January 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.
Baltimore gets about 44 inches of precipitation in a normal year. The wettest months are July, August and September (4.7 inches in July). Inside the workable window, February and November are the driest, at 2.8 and 3.0 inches. The station averages about 43 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 | 44 | 30 | 3.1 | Cold |
| Feb | 47 | 32 | 2.8 | Workable |
| Mar | 55 | 39 | 3.9 | Workable |
| Apr | 67 | 48 | 3.5 | Workable |
| May | 76 | 58 | 3.4 | Workable |
| Jun | 85 | 68 | 3.4 | Workable |
| Jul | 90 | 73 | 4.7 | Hot |
| Aug | 87 | 71 | 4.3 | Workable |
| Sep | 80 | 65 | 4.5 | Workable |
| Oct | 69 | 53 | 3.5 | Workable |
| Nov | 58 | 43 | 3.0 | Workable |
| Dec | 48 | 35 | 3.7 | Workable |
Add-ons priced for Baltimore
Add-ons start from national price ranges and are scaled by 1.02 for Baltimore, which is the average of the area's wage index (1.02) and goods price index (1.02). 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 – $5,500 |
Who does the work: Baltimore trade wages
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 Baltimore the blend is 1.02.
Carpenters (47-2031), 80% of the weighting: a median of $29.99 an hour, in line with the US median of $29.12. The middle half of them earn between $24.96 and $36.06 an hour. About 3,870 work in the metro. That is 28.5 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 $22.34 an hour, which is in line with the national $22.66. The middle half of them earn between $18.72 and $26.66 an hour. BLS counts 10,520 of them working in the area, 77.5 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 $1,800 to the midpoint estimate; the 25th percentile takes off about $1,500. That is a swing of roughly 8.1% to 9.7% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Baltimore-Columbia-Towson has 1,356,680 jobs in total (BLS, May 2025), ranking 22nd 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% | $24.96 | $29.99 | $36.06 | $29.12 | 1.03 | metro |
| Construction laborers (47-2061) | 20% | $18.72 | $22.34 | $26.66 | $22.66 | 0.99 | metro |
| Blended | 100% | 1.02 | |||||
What nearby projects cost in Baltimore
Jobs that often go together with composite deck are priced below at their usual sizes, using the same Baltimore wage and price inputs. Compared with national midpoints, wood deck comes out highest (+2%) and concrete patio lowest (−1%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Wood deck | 300 sq ft | $7,700 – $15,500 | +2% |
| Concrete patio | 300 sq ft | $1,250 – $3,950 | −1% |
| Paver patio | 300 sq ft | $3,000 – $5,450 | level |
| Gutters | 160 linear ft | $1,300 – $4,250 | +1% |
Baltimore: what basic, standard and premium work costs
The cited range is split into basic, standard and premium bands, then scaled to Baltimore. 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
$12,300 to $17,300
Entry-level composite boards, low deck, simple shape
Standard
$16,000 to $21,000
Mid-grade capped boards with railing and stairs
Premium
$19,700 to $24,700
Premium capped or PVC boards, multi-level, hidden fasteners
| Size | Basic | Standard | Premium |
|---|---|---|---|
| 10x12 (120 sq ft) | $4,950 – $6,950 | $6,450 – $8,450 | $7,950 – $9,950 |
| 12x12 (144 sq ft) | $5,950 – $8,350 | $7,750 – $10,100 | $9,550 – $11,900 |
| 16x20 (320 sq ft) | $13,100 – $18,400 | $17,100 – $22,400 | $21,000 – $26,300 |
| 20x20 (400 sq ft) | $16,400 – $23,000 | $21,300 – $27,900 | $26,300 – $32,900 |
Is Baltimore cheap or dear? The local comparison
Of the five closest metros, 4 are cheaper than Baltimore. Dover is the lowest at about $16,600 (midpoint, 300 sq ft), 60 miles away.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Baltimore, MDthis page | $12,300 – $24,700 | $18,500 | |
| York, PA45 miles | $12,200 – $24,500 | $18,300 | −1% |
| Lancaster, PA55 miles | $11,700 – $23,400 | $17,500 | −5% |
| Dover, DE60 miles | $11,000 – $22,100 | $16,600 | −10% |
| Washington, DC60 miles | $12,300 – $24,700 | $18,500 | level |
| Lexington Park, MD70 miles | $12,200 – $24,500 | $18,300 | −1% |
| Maryland (statewide) | $12,400 – $24,800 | $18,600 | +1% |
| United States | $12,100 – $24,200 | $18,100 | −2% |
Out of the 300 metros we cover, Baltimore ranks #75 for the cost of this job (#1 is the most expensive). Statewide, Baltimore is 1% below the Maryland figure.
Elsewhere in Maryland
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Hagerstown, MD | 107,170 jobs | $11,400 – $22,800 | $17,100 | −8% |
| Lexington Park, MD | 70,650 jobs | $12,200 – $24,500 | $18,300 | −1% |
Metros of a similar size
Big cities and small ones price differently, so here is Baltimore against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Charlotte, NC | 1,358,370 jobs | $10,900 – $21,900 | $16,400 | −11% |
| St. Louis, MO | 1,341,320 jobs | $13,600 – $27,200 | $20,400 | +10% |
| Orlando, FL | 1,411,730 jobs | $10,700 – $21,400 | $16,000 | −14% |
| Austin, TX | 1,293,690 jobs | $10,700 – $21,400 | $16,000 | −13% |
Why two Baltimore 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).
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 $16,000 to $21,000 for Baltimore, MD is attached.
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Multi-page report for Baltimore, MD: 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 Baltimore: your questions
+How much does it cost to build a composite deck in Baltimore?
For 300 sq ft, expect $12,300 to $24,700 in the Baltimore area. A standard-spec job lands at $16,000 to $21,000. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for composite deck in Baltimore?
About $41 to $82 per sq ft for materials and labor, plus $50 to $160 for the permit if one is needed. The US range is $40 to $80.
+Is composite deck cheaper in Baltimore or York?
York is 45 miles away. The midpoint for 300 sq ft there is $18,300, which is 1% less than Baltimore ($18,500). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Baltimore?
About 60% at the midpoint, or $11,000 out of $18,500. Materials are 40% and permits 1%. Nationally, labor is 60%.
+What would 16x20 (320 sq ft) cost in Baltimore?
$13,100 to $26,300. Pick a different size in the estimator above to get your own number.
+Does composite deck need a permit in Baltimore?
Often, but rules are set by your city or county building office, so call before you hire. Budget $50 to $160 for fees in the Baltimore area (our national range of $50 to $150 scaled by the local price level).
+Is Baltimore expensive for composite deck compared with the rest of Maryland?
Baltimore is 1% below the Maryland statewide estimate ($18,600 at the midpoint). We cover 3 metros in Maryland; see the state page to compare them.
+What do carpenters earn in Baltimore?
The BLS median is $29.99 an hour in the Baltimore area, compared with $29.12 nationally. The 25th to 75th percentile range is $24.96 to $36.06.
+What do basic and premium composite deck work cost in Baltimore?
For 300 sq ft, basic work runs $12,300 to $17,300 and premium work $19,700 to $24,700. 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 Baltimore?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are February through June and August through December. February 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 Baltimore?
$1,850 to $5,500 for 300 sq ft, from a national range scaled by the local wage and goods indexes.
Composite deck near Baltimore
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