Composite Deck costs $44.55 to $94.68 per sq ft in Ann Arbor in 2026. For a 400 sq ft project, expect $17,820 – $37,872 installed, typically near $27,846. That is about 10% above the Michigan state average.
Ann Arbor composite deck calculator
Planning estimate only. State pricing applies a construction wage index to the labor share; materials are held at national prices. Get three written quotes before committing.
Why Ann Arbor costs more than the rest of Michigan
Ann Arbor carries roughly a 10% premium over the Michigan statewide figure. Three things drive that gap. Metro wages run above the state average, and labor is about 42% of this bill. Permitting and inspection are slower and more expensive inside city limits. And site access is tighter, which means smaller equipment, more hand work, and sometimes street permits for deliveries.
Statewide, Michigan averages $40.50 to $86.07 per sq ft, against $44.55 to $94.68 inside Ann Arbor. Suburbs on the metro fringe usually fall between the two.
Composite Deck cost by project size in Ann Arbor
| Project size | Ann Arbor range | Typical |
|---|---|---|
| 10×10 (100 sq ft) | $4,455 – $9,468 | $6,962 |
| 12×12 (144 sq ft) | $6,416 – $13,633 | $10,024 |
| 12×16 (192 sq ft) | $8,555 – $18,179 | $13,366 |
| 12×20 (240 sq ft) | $10,693 – $22,723 | $16,708 |
| 16×20 (320 sq ft) | $14,257 – $30,297 | $22,277 |
| 20×20 (400 sq ft) | $17,822 – $37,871 | $27,846 |
Where the money actually goes
For a 400 sq ft project in Ann Arbor at roughly $27,846, a typical bill splits like this:
| Line item | Share | Cost |
|---|---|---|
| Labor | 42% | $11,695 |
| Materials | 44% | $12,113 |
| Site prep & equipment | 9% | $2,422 |
| Overhead, disposal & finishing | 6% | $1,615 |
The labor share is why identical projects diverge so sharply between states. It is also why a bid that comes in far below these numbers usually means a thinner specification or a crew cutting preparation, not a genuine bargain.
Ann Arbor compared with other Michigan markets
| Area | Cost per sq ft | vs Ann Arbor |
|---|---|---|
| Detroit | $44.15 – $93.82 | −1% |
| Grand Rapids | $42.53 – $90.37 | −5% |
| Michigan average | $40.50 – $86.07 | −9% |
Frost depth and code requirements in Ann Arbor
Permits in Ann Arbor
A residential permit for this work typically runs around $400 in Michigan, and metro jurisdictions like Ann Arbor usually sit at the upper end of that range with longer review times. Permit cost is rarely included in a contractor quote, so add it separately. Confirm scope with the Ann Arbor building department before work begins.
Hiring in Ann Arbor
Get three written, itemised quotes from licensed and insured contractors, and make sure each specifies the same scope and the same grade of material. In a metro market, the cheapest bid often reflects a thinner specification or a crew travelling in from outside the area rather than a genuine saving. Ask for local references and check that the licence is current in Michigan.
Frequently asked questions
How much does composite deck cost in Ann Arbor?
In 2026, composite deck costs $44.55 to $94.68 per sq ft in Ann Arbor. For a 400 sq ft project, the installed total typically lands between $17,820 and $37,872.
Is Ann Arbor more expensive than the rest of Michigan?
Yes. Ann Arbor runs about 10% above the Michigan statewide average, driven by metro wage levels, permitting, and tighter site access.
Do I need a permit in Ann Arbor?
Most work of this type and value requires a permit. Budget around $400 and allow extra time for review, since metro jurisdictions are typically slower than rural ones.
How do I compare quotes in Ann Arbor?
Insist on three written, itemised quotes covering identical scope, materials, and preparation. A bid far below the others usually signals a reduced specification rather than better value.
Nearby markets
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