You Stamped The Drawings, So You Own Both Review Clocks
The engineer wrote one line on the drawings and you're the one drafting it, stamping it, and defending it to two reviewers who don't answer to each other.
Delegated design makes you the designer of record on a system you also install, which turns the drafting table into a production department here and a convenience everywhere else. FM Global and highly protected risk reviewers apply rules tighter than code, so clearing the fire marshal doesn't mean you're cleared. No other trade on the building needs two independent approvals before the first stick of pipe gets cut.
The size of it
Six to twelve weeks of drafting, permit fees, plan review fees, and calc time go out in the first 90 days against maybe 3 to 5% of contract value assigned to submittals on the schedule of values. A resubmittal cycle burns paid engineering labor a second time and never reads as an overrun, because most fire protection contractors book design labor to overhead and not to the job.
The engineer of record writes sprinkler system per NFPA 13 as a deferred submittal and passes the design to you. You produce the working plans and the hydraulic calculations, you stamp them under NICET III or IV or a PE, and then they go to the AHJ or fire marshal for plan review and, on insured commercial and industrial work, to the owner's carrier as well. A comment from either reviewer restarts the clock, and nothing releases to the shop while it runs, because sprinkler pipe is cut and grooved to dimension. The calc also depends on a current hydrant flow test the water purveyor schedules, so if static and residual come back below your bid assumption, the pipe grows a size or a fire pump appears that was never in the number.
Three moves, in order
Step 06: Project management
Billing dates, change orders, and notices, run as standards that hold without anyone chasing them.
What else costs fire protection contractors money
The same mechanism in other trades
What fire protection owners ask
Should sprinkler design and hydraulic calc labor be job cost or overhead?
The engineer wrote one line on the drawings and you're the one drafting it, stamping it, and defending it to two reviewers who don't answer to each other.
What does it cost?
Six to twelve weeks of drafting, permit fees, plan review fees, and calc time go out in the first 90 days against maybe 3 to 5% of contract value assigned to submittals on the schedule of values. A resubmittal cycle burns paid engineering labor a second time and never reads as an overrun, because most fire protection contractors book design labor to overhead and not to the job.
What do I do first?
Move drafting and calc labor out of overhead and onto the job, with a separate cost code for each submittal cycle so cycle two and cycle three are visible on their own.
What are fire protection contractors supposed to be making?
Fire protection runs 23% gross margin, 15% 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 11%.
Which part of the system fixes it?
The step is number 06, project management. Billing dates, change orders, and notices, run as standards that hold without anyone chasing them. It comes from chapter 6 of CONTROL: The Construction Financial Operating System.
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.