Commercial deck rebuilding costs, published.
Budget season should not require three phone calls to get one number. The table below is the guide our own quotes come from: per-square-foot rebuild ranges, per-structure figures for balconies and stairs, and the line items that move totals.
The cost table
| Scope | Typical range | What moves it |
|---|---|---|
| Full structural deck rebuild, commercial | $45 to $85 per sq ft | Framing condition, height and access, assembly vs standard loads, surface material |
| Apartment or condo balcony rebuild | $9,000 to $22,000 per balcony | Size, ledger and rim condition, access; per-unit price drops on whole-building phases |
| Exterior stair tower rebuild | $8,000 to $18,000 per tower | Height, stringer count, landing condition, temporary access needs |
| Second-floor walkway reframing | $220 to $420 per linear foot | Span, joist sizing, how much decking and rail returns |
| Guardrail replacement to current code | $90 to $160 per linear foot | Wood vs aluminum or steel, post attachment condition, assembly load design |
| Ledger repair and re-flash | $2,500 to $8,000 per connection zone | Rot depth in the rim, siding type, engineering when the framing needs it |
| Joist and beam sistering or replacement | $3,000 to $12,000 per section | Access from below, load path changes, span table upgrades |
| Waterproof membrane on plaza or rooftop decks | $10 to $18 per sq ft | System specified, substrate condition, drainage corrections |
| Composite surface upgrade (over sound framing) | $18 to $32 per sq ft | Board line chosen, fastener system, rail package |
| Rooftop deck construction premium | +15% to +35% over grade-level | Crane or carry access, membrane protection, egress work |
| Engineered assessment and condition report | $600 to $1,500 per property | Structure count; credited toward construction when the work proceeds |
| Permits and plan review | $300 to $1,200 per project | Municipality, whether engineered drawings are required; handled inside the contract |
2026 ranges for metro Detroit commercial work, labor and standard materials. Premium surfaces, custom rails, and engineered steel price with the specification.
How a project runs
- Photos and the problem first. Text the structure, the damage, and any inspection paperwork to (313) 285-3323. Most projects get a working range from this guide the same day.
- Walkdown and written assessment. Framing probed, ledgers checked, guards tested, findings photographed. The report is written to hand to a board, an owner, or a lender.
- Engineering and permits. Spans, loads, and attachment details engineered where required, permits pulled in the municipality, drawings that make plan review short.
- Phased construction. Buildings stay occupied, businesses stay open where the calendar allows, and each phase closes with its inspection.
- Closeout with paper. Permit record, inspection signoffs, and material documentation, and an invoice that matches the quote.
The rules behind the numbers
Commercial deck structure is code-driven, not preference-driven. Live loads and guard requirements come from the building code Michigan adopts from the International Code Council, with assembly areas designed to 100 pounds per square foot. Contractor licensing in Michigan runs through LARA, the state licensing department, and deck safety research from the North American Deck and Railing Association consistently points at the same failure origins we find in the field: ledger connections and guards, not deck boards. Published prices plus named standards means everything on this page can be checked.
Budget it, then call
Rough out your project from the table, then call (313) 285-3323 or use the assessment form. Balcony programs live on the balcony page, hospitality work on the restaurant deck page.
Cost questions, answered straight
How much does it cost to rebuild a commercial deck in Detroit?
Plan on $45 to $85 per square foot for a full structural rebuild that is engineered, permitted, and inspected, which puts a typical 800 square foot restaurant deck between $36,000 and $68,000. Apartment balconies run $9,000 to $22,000 each and exterior stair towers $8,000 to $18,000. Every range above is what our quotes are actually built from, and the invoice matches the quote.
Why do commercial decks cost more per foot than residential decks?
Because the code asks more of them. Assembly seating areas are designed to a 100 pound per square foot live load, more than double the 40 pounds residential decks carry, guards get designed for real crowd loads, and commercial projects carry engineering, permits, insurance, and documentation a backyard deck never sees. The extra cost is the difference between furniture and infrastructure.
What makes a project land at the top of a range?
Three findings, usually: framing rot that extends into the building rim (the ledger zone), access that needs equipment or protection of occupied space below, and code upgrades the old structure never had, taller guards and closer baluster spacing being the common ones. Each gets named at the walkdown with its own number, never discovered on an invoice.
Is it cheaper to repair a deck or rebuild it?
Repair wins when the framing is sound and the problem is surface or guards: guard replacement at $90 to $160 per linear foot or a section reframe in the low thousands. Rebuild wins when rot has reached ledgers, beams, or posts, because piecemeal repairs on failed framing buy seasons, not decades. The assessment answers which side of that line your structure is on, in writing.
Detroit Deck Rebuild publishes this guide for the whole metro, from Southfield and Warren to Royal Oak and St. Clair Shores. Start at the homepage for everything we rebuild.