Composite Deck costs $44.52 to $94.60 per sq ft in Boston in 2026. For a 400 sq ft project, expect $17,807 – $37,840 installed, typically near $27,823. That is essentially in line with the Massachusetts average.
Boston composite deck calculator
Planning estimate. Wage index applies to the labor share only; materials held at national prices. Get three written quotes.
How Boston compares with the rest of Massachusetts
Construction wages in Boston average $39.88 per hour against $39.10 statewide, so pricing tracks the Massachusetts norm closely.
Labor is about 42% 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.
Composite Deck cost by project size in Boston
| Project size | Boston range | Typical |
|---|---|---|
| 100 sq ft | $4,452 – $9,460 | $6,956 |
| 200 sq ft | $8,903 – $18,920 | $13,912 |
| 300 sq ft | $13,355 – $28,380 | $20,867 |
| 400 sq ft | $17,807 – $37,840 | $27,823 |
| 600 sq ft | $26,710 – $56,759 | $41,735 |
| 800 sq ft | $35,614 – $75,679 | $55,646 |
| 1,000 sq ft | $44,517 – $94,599 | $69,558 |
| 1,500 sq ft | $66,776 – $141,899 | $104,337 |
Where the money goes
For a 400 sq ft project in Boston at roughly $27,823, a typical bill splits like this:
| Line item | Share | Cost |
|---|---|---|
| Labor | 42% | $11,686 |
| Materials | 44% | $12,242 |
| Site prep & equipment | 8% | $2,226 |
| Overhead, disposal & finishing | 6% | $1,669 |
Boston compared with other Massachusetts markets
| Area | Cost per sq ft | vs Boston |
|---|---|---|
| Worcester | $42.93 – $91.22 | −4% |
| Springfield | $42.51 – $90.34 | −5% |
| Barnstable Town | $41.88 – $89.00 | −6% |
| Pittsfield | $41.13 – $87.40 | −8% |
| Massachusetts average | $44.10 – $93.71 | −1% |
Ground conditions and code in Boston
Permits in Boston
A residential permit for this work typically runs around $700 in Massachusetts. Permit cost is rarely included in a contractor quote, so budget it separately and confirm scope with the Boston building department before work begins.
Hiring in Boston
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 Massachusetts.
Frequently asked questions
How much does composite deck cost in Boston?
In 2026, composite deck costs $44.52 to $94.60 per sq ft in Boston. For a 400 sq ft project, the installed total typically lands between $17,807 and $37,840.
Is Boston more expensive than the rest of Massachusetts?
Not meaningfully. Boston prices track the Massachusetts average closely.
Do I need a permit in Boston?
Most work of this type and value requires a permit. Budget around $700 in Massachusetts and allow extra time for review in metro jurisdictions.
How do I compare quotes in Boston?
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
Open the full composite deck calculator →