SCAFFOLDING · SPECIALTY · FIXED BY STEP 03

Liability accrues by the month and you priced it by the erect

The GL renewal jumped, so you raised the erect number. The scaffold then stood for a year, and none of that year paid for the exposure it created.

WHY IT IS A SCAFFOLDING PROBLEM

Scaffolding carries gravity risk for trades that aren't yours: masons, glaziers, painters, and mechanical crews climb your structure daily, and their injuries come back to your policy through indemnity. In New York, Labor Law 240 and 241 impose near-absolute liability for gravity-related injury, and that liability passes down to you at premiums no other trade on the site pays. The premium is driven by standing months and headcount on the deck, so recovering it in a one-time erect charge guarantees the mismatch grows every month the job runs long.

WHAT IT COSTS

The size of it

The longest-running jobs, the ones that look strongest on the revenue report, carry the most uncompensated inspection labor and liability. They're your least profitable work and the report says the opposite.

OVERHEAD AT $1M–$5M

18%

CFOS target 17% for scaffolding.

GROSS MARGIN AT $1M–$5M

26%

CFOS target 27% for scaffolding.

NET PROFIT AT $1M–$5M

CFOS target 10% for scaffolding.

Your risk is a function of how long the structure stands and how many people climb it, not how many hours it took to build. OSHA 1926.451(f)(3) puts a competent person on that scaffold before crews get on it each day and after any occurrence that could affect structural integrity, and 1926.454 requires retraining whenever conditions or scaffold types change. Both of those are recurring labor for the entire standing period, and both get quoted once inside the erect price where they're visible and where every competitor is undercutting them. The monthly rate, which is the line that tracks the exposure, carries almost none of it. Then the job runs eight months past its bid duration and every one of those months is uncompensated inspection labor riding on your insurance.

WHAT TO DO

Three moves, in order

STEP 01

Move competent-person inspection labor and the insurance load out of the erect price and into the monthly rate, then rebuild the monthly rate as equipment plus inspection plus risk.

STEP 02

Log inspection hours by job every week so you know what a standing month costs you in labor before you quote the next one.

STEP 03

Write a duration clause into the subcontract: past the bid duration, the monthly rate escalates on a stated schedule. Send the notice when the job crosses that date, not at closeout.

THE FIX

Step 03: Overhead calculation

What indirect cost really comes to at your size, and the rate your estimating template should be carrying.

CFOS-03 · CHAPTER 3

The overhead rate your bid sheet should carry

What this step changes, what it depends on, and how to tell it's installed.

BENCHMARKS

Scaffolding by revenue band

Every one of the 7 bands carries the CFOS target beside the published figure.

ACROSS EVERY TRADE

You're bidding below your own overhead

If the overhead percentage in your estimating template is lower than what you carry, every job you win loses money before a single hour is worked.

SAME TRADE

What else costs scaffolding contractors money

SCAFFOLDING · CFOS-01

Your rental line is funding the GC's cash for two years

The GC holds ten percent of your monthly rental invoice the way they hold it on installed work, and keeps holding it until the building is done. Nothing on rent waits to be completed.

SCAFFOLDING · CFOS-02

Owned steel sitting on a job costs that job nothing

A tower that ties up forty percent of your yard for fourteen months prices out identically to a three-month job using the same frames. Utilization lives nowhere in the accounting.

SCAFFOLDING · CFOS-06

Forty verbal adds a job never become change orders

Masons want a lift raised and painters want a deck moved. Two men go out for three hours, nobody signs anything, and the same call comes forty more times.

SCAFFOLDING · CFOS-06

Your erect date belongs to people who don't work for you

Crew is booked for the fifteenth and the drawings are still on the owner's engineer's desk. You don't control any of the three clocks that release the erect.

SCAFFOLDING · CFOS-04

You sell deck square feet and spend erector hours per lift

Ten thousand square feet at eight feet in an open garage and ten thousand square feet at ninety feet inside an occupied atrium bid identically. One of them costs double.

SAME MECHANISM, OTHER TRADES

The same mechanism in other trades

DRYWALL

Level 5 gets discovered after the primer goes on

The spec said Level 4, the owner walked it at night with the wall washers on, and now there's a skim coat standing between you and your retention.

DRYWALL

Piece rate and square-foot bids agree on flat walls only

Your hangers make the same on a clean corridor as on a bathroom full of soffits, so guess which walls are done Friday and which ones aren't.

ELECTRICAL

You hit the hours and still lost money on the rate

You bid labor in unit hours and the field hit the unit hours. The loss lives in the dollars per hour you converted them at, and it runs the same direction on every job you take.

QUESTIONS

What scaffolding owners ask

How to price scaffold insurance and inspection into the monthly rental rate?

The GL renewal jumped, so you raised the erect number. The scaffold then stood for a year, and none of that year paid for the exposure it created.

What does it cost?

What do I do first?

Move competent-person inspection labor and the insurance load out of the erect price and into the monthly rate, then rebuild the monthly rate as equipment plus inspection plus risk.

What are scaffolding contractors supposed to be making?

Scaffolding runs 26% gross margin, 18% overhead and 8% net profit before taxes at $1M–$5M. The all-trade average is 7%, so this trade sits 1 points above it. The CFOS target is 10%.

Which part of the system fixes it?

The step is number 03, overhead calculation. What indirect cost really comes to at your size, and the rate your estimating template should be carrying. It comes from chapter 3 of CONTROL: The Construction Financial Operating System.

AUTHOR

JOSH LUEBKER

MASTER ELECTRICIAN · 150+ PROJECTS · $2.1B+ MANAGED

Josh Luebker ran commercial construction projects before he ran the numbers behind them, on data centres, military bases, hospitals, and high-rises. He wrote CONTROL: The Construction Financial Operating System, which is an eight-step framework for commercial subcontractors, and it publishes on October 1, 2026. He is a master electrician who moved into the office and kept the field vocabulary.

Sulphur Prairie Operations LLC maintains the benchmark reference behind these figures. Every edition is reconciled against the newest CFMA survey release before it publishes here. Where a figure changes between editions, the older edition keeps its year in the title so a citation to it stays correct.