Steel erection in 2026 runs $400–$1,500 per ton for most commercial work, with simple single-story buildings at the low end and congested urban or high-rise jobs at the top. As a rule of thumb, erection lands at 25–35% of your fabricated steel cost — so if fab is $2,400/ton, expect erection quotes in the $600–$850/ton neighborhood before site-specific adders. The number that actually moves your bid isn't the per-ton rate, though. It's piece count, crane time, and connection type.
Here's how the ranges break down and how to sanity-check an erector's quote before it goes into your bid.
What Does Steel Erection Cost Per Ton in 2026?
| Project type | 2026 erection cost per ton | Typical tons | Notes |
|---|---|---|---|
| Pre-engineered metal building | $300–$500 | 20–150 | Repetitive frames, light pieces, fast cycle |
| Single-story conventional (warehouse, retail) | $400–$650 | 30–300 | Open site, mobile crane, mostly bolted |
| Low-rise commercial, 2–4 stories | $550–$850 | 100–600 | More columns and moment frames, tighter sequencing |
| Mid-rise, 5–12 stories | $800–$1,200 | 400–2,000 | Tower or large crawler crane, hoisting logistics |
| High-rise / heavy industrial | $1,200–$2,000+ | 1,000+ | Climbing cranes, night picks, engineered rigging |
| Structural retrofit / infill | $1,500–$3,000 | 5–100 | Low tonnage, brutal access, hand-setting common |
Two things about that table. First, retrofit work looks expensive per ton because tonnage is tiny — an erector still has to mobilize a crane and crew for 12 tons of infill beams, and the fixed costs get divided by almost nothing. Second, these are erection-only numbers: crane, crew, detailing bolts, and plumb-up. Material and fabrication sit on top — see the full stack section below.
What Drives Erection Cost: Height, Access, Crane Time, Connections?
Erectors don't really price by the ton. They price by crew-days and crane-days, then divide by tonnage to give you a per-ton number. Four inputs dominate:
Piece count and piece weight. A raising gang sets pieces, not tons. A job with 200 pieces averaging 1,500 lbs each erects slower per ton than a job with 60 pieces averaging 3 tons — same total weight, triple the picks. This is why erectors ask for a piece count before they'll quote, and why a takeoff that miscounts members by 15% quietly poisons the erection line in your bid.
Height and reach. A 90-ton hydraulic truck crane handles most single-story work at roughly $250–$375/hour operated and maintained in 2026. Once you're past four stories or reaching over an existing structure, you're into a 250-ton-class crane or a crawler — think $40,000–$80,000/month bare rental plus assist crane, transport, and assembly. Height also slows everything: hoisting, connecting, and plumbing all take longer at 120 feet than at 25.
Site access and laydown. If trucks can deliver in sequence and the crane can walk the building perimeter, you get catalog rates. If steel has to be shaken out in a remote laydown yard and shuttled in, or the crane sits in one fixed position picking blind, add 15–30%. Downtown sites with lane closures and flagging can add more than the crane costs.
Connection type. Field-bolted connections are the baseline. Field welding changes crew composition, adds inspection hold points, and stretches the schedule — more on that two sections down.
How Many Tons Per Day Can a Crew Erect?
A standard raising gang — foreman, crane operator, two connectors, hook-on man, plus a plumbing/detail crew behind them — sets 25–45 pieces per shift on a well-sequenced conventional job. Convert that to tonnage:
| Job profile | Pieces/day | Avg piece weight | Tons/day |
|---|---|---|---|
| Light commercial, small beams | 35–45 | 600–1,000 lbs | 12–20 |
| Typical low-rise, mixed W-shapes | 28–38 | 1,500–2,500 lbs | 25–40 |
| Heavy industrial, large girders | 15–25 | 4,000–8,000 lbs | 40–70 |
| Retrofit / hand-set infill | 6–15 | varies | 3–10 |
The math cuts both ways: heavy jobs post big tons-per-day numbers but need bigger cranes; light jobs look slow in tonnage terms even when the crew is flat-out. When you're checking an erector's schedule, work in pieces per day. If the quote implies 60 picks a shift on a moment-frame job, somebody's being optimistic, and it'll surface as a change order or an extended-general-conditions claim later.
For budgeting: a conventional crew running $12,000–$18,000/day all-in (labor, crane, gear) setting 30 tons/day gives you $400–$600/ton — right in the table's low-rise band. That's the sanity check.
How Do Field-Bolted vs Field-Welded Connections Change Erection Cost?
Bolted connections are the default for a reason. A connector installs a snug-tightened bolt group in minutes and the raising gang keeps moving. Field welding introduces:
- Slower cycle times — a CJP moment weld on a beam flange can take hours including preheat, versus minutes for a bolted end-plate
- Certified welders and inspection — UT or RT on demand-critical welds, with hold points that idle the crane
- Weather sensitivity — wind screens and preheat in cold weather, or lost days
Rule of thumb: a heavily field-welded moment frame runs 30–60% more per ton to erect than an equivalent bolted frame. On a 400-ton job at $700/ton baseline, that's $85,000–$170,000 of spread — often larger than the fabrication savings that drove the welded design in the first place. If you have design input, this is where the money is; the bolted vs welded connection cost breakdown covers the shop-versus-field trade in detail.
Where Does Erection Fit in the Full Cost-Per-Ton Stack?
When a GC asks "what's steel running per ton," they usually mean the installed number. Here's the 2026 stack for typical conventional commercial work:
| Cost layer | 2026 range per ton | Share of installed cost |
|---|---|---|
| Mill/warehouse material | $900–$1,400 | ~30–35% |
| Fabrication (shop labor, consumables, drawings) | $800–$2,000 | ~35–45% |
| Shop coatings / galvanizing (if specified) | $150–$500 | ~5–10% |
| Erection | $400–$1,200 | ~20–30% |
| Installed total | $2,400–$4,800 | 100% |
Material pricing detail is in the structural steel cost per ton update, shop-side numbers in the steel fabrication cost breakdown, and coating adders in the galvanizing cost per ton guide. The takeaway for bidding: erection is the layer with the widest site-driven variance. Material is a commodity, fab rates are knowable, but two identical buildings on different sites can see erection differ by 2x.
How Much Do Region and Union vs Open Shop Matter?
Labor is 50–65% of an erector's cost, so wage structure moves the per-ton number hard:
| Market type | Ironworker all-in labor rate (2026) | Effect on erection $/ton |
|---|---|---|
| Major union metro (NYC, Chicago, SF, Boston) | $110–$165/hr | +30–60% vs national baseline |
| Mid-market union (Midwest, mid-Atlantic) | $85–$115/hr | +10–25% |
| Open shop Southeast / Texas | $55–$85/hr | Baseline to −15% |
| Mountain West / rural | $60–$95/hr | Baseline, plus travel/per-diem adders |
"All-in" means wage plus fringes, insurance, and burden — the check the contractor writes, not the check the ironworker cashes. Union crews in major metros often post better pieces-per-day, which claws back some of the rate gap, but rarely all of it. If you fabricate in a low-cost region and ship into a union metro, price erection at destination rates, not home rates. That mismatch has burned plenty of shops bidding out-of-territory work.
FAQ: Small Job Minimums, Winter Premiums, and Re-Mobilization
What's the minimum charge for a small erection job? Most erectors carry an effective floor of $8,000–$20,000 regardless of tonnage — mobilization, insurance minimums, and a crew day don't scale down. A 10-ton canopy might quote at $1,500/ton when the same erector would do 200 tons of warehouse at $450. If your job is under ~25 tons, get the quote as a lump sum and don't torture it into a per-ton comparison.
How much more does winter erection cost? Budget 10–20% premiums in northern markets for December–March work: shorter daylight, wind and snow days, cold-weather welding procedures, and slower connectors in the cold. High-wind sites can lose 2–4 crane days a month regardless of season — crane picks typically stop around 25–30 mph sustained.
What does re-mobilization cost if the job stops and restarts? Each additional mobilization runs $2,500–$10,000+ depending on crane class — crawler cranes at the top since they move by the truckload. Fabricator delays, unready foundations, or out-of-sequence steel packages all trigger re-mobs, and erectors bill them without sympathy. Sequencing steel deliveries to match erection order is the cheapest insurance in the whole budget.
Does the erector or the fabricator supply field bolts? Convention varies by region and contract, so state it explicitly. A 500-ton job can carry $15,000–$40,000 of high-strength bolt assemblies — enough to flip low bidder if one party assumed the other was buying them.
Every erection quote starts from the same input: how many pieces, what sizes, how heavy. If your takeoff is off, the erector's price is off — or worse, right, and your bid is wrong. SteelFlo reads your structural drawings and returns a verified piece count with sizes and weights across 4,500+ sections and 6 international standards, at 95–99% accuracy with AI detection plus human verification of every flagged member. Get piece counts erectors trust — your first 3 takeoffs are free.