Wood Deck costs $24.59 to $49.17 per sq ft in Helena in 2026. For a 400 sq ft project, expect $9,834 – $19,669 installed, typically near $14,752. That is essentially in line with the Montana average.
Helena wood deck calculator
Planning estimate. Wage index applies to the labor share only; materials held at national prices. Get three written quotes.
How Helena compares with the rest of Montana
Construction wages in Helena average $30.44 per hour against $30.61 statewide, so pricing tracks the Montana norm closely.
Labor is about 52% of the installed cost on this type of work, and it is the part that actually moves between markets. Materials are priced by national manufacturers and barely shift, which is why the gap between metros is narrower than wage differences alone suggest.
Wood Deck cost by project size in Helena
| Project size | Helena range | Typical |
|---|---|---|
| 100 sq ft | $2,459 – $4,917 | $3,688 |
| 200 sq ft | $4,917 – $9,834 | $7,376 |
| 300 sq ft | $7,376 – $14,752 | $11,064 |
| 400 sq ft | $9,834 – $19,669 | $14,752 |
| 600 sq ft | $14,752 – $29,503 | $22,127 |
| 800 sq ft | $19,669 – $39,338 | $29,503 |
| 1,000 sq ft | $24,586 – $49,172 | $36,879 |
| 1,500 sq ft | $36,879 – $73,758 | $55,319 |
Where the money goes
For a 400 sq ft project in Helena at roughly $14,752, a typical bill splits like this:
| Line item | Share | Cost |
|---|---|---|
| Labor | 52% | $7,671 |
| Materials | 34% | $5,016 |
| Site prep & equipment | 8% | $1,180 |
| Overhead, disposal & finishing | 6% | $885 |
Helena compared with other Montana markets
| Area | Cost per sq ft | vs Helena |
|---|---|---|
| Billings | $24.99 – $49.98 | +2% |
| Bozeman | $25.47 – $50.94 | +4% |
| Missoula | $24.51 – $49.02 | 0% |
| Great Falls | $24.42 – $48.84 | −1% |
| Montana average | $24.66 – $49.32 | 0% |
Ground conditions and code in Helena
Permits in Helena
A residential permit for this work typically runs around $350 in Montana. Permit cost is rarely included in a contractor quote, so budget it separately and confirm scope with the Helena building department before work begins.
Hiring in Helena
Get three written, itemised quotes from licensed and insured contractors, each specifying the same scope and grade of material. Ask for local references and check the licence is current in Montana.
Frequently asked questions
How much does wood deck cost in Helena?
In 2026, wood deck costs $24.59 to $49.17 per sq ft in Helena. For a 400 sq ft project, the installed total typically lands between $9,834 and $19,669.
Is Helena more expensive than the rest of Montana?
Not meaningfully. Helena prices track the Montana average closely.
Do I need a permit in Helena?
Most work of this type and value requires a permit. Budget around $350 in Montana and allow extra time for review in metro jurisdictions.
How do I compare quotes in Helena?
Get three written, itemised quotes covering identical scope and materials. A bid far below the others usually signals a reduced specification rather than better value.
Nearby markets
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