Job Costing
Low-Voltage & Data Cabling Job Costing
Structured cabling contractors bid by the drop — so many dollars per Cat6 run, per fiber strand, per outlet terminated and tested. But when the job starts, most crews still clock time to one lump job number, and the office finds out at closeout whether the drops made money, not while there's still time to fix it. Cost-coding at the drop level is what closes that gap.
Published October 9, 2026 · 7 min read
Key takeaway
Break low-voltage work into cost codes for rough-in/pulling, termination, testing, and labeling, track drops completed per crew-day against the bid quantity, and you get a live cost-per-drop number instead of a surprise at the final invoice. That number is what makes the next bid more accurate than the last one.
Why low-voltage work needs its own cost-code set
Structured cabling doesn't behave like a typical electrical branch-circuit job, and coding it the same way hides the numbers you actually need. A branch-circuit rough-in is one continuous task; a cabling job is really four distinct tasks stacked on the same drop — pulling and rough-in, termination, testing, and labeling/documentation — each with a different labor rate of production and a different failure mode if it goes wrong.
If all four get logged to one "low voltage" code, you can tell whether the job made money overall, but you can't tell why. Maybe pulling went fine and termination is what's eating the budget because the crew is retesting failed links twice. Splitting the codes is what turns a lagging-indicator loss into a leading-indicator fix mid-job.
A workable cost-code breakdown
- •LV-100 Rough-in/pulling: running cable from the telecom room to each drop location, including J-hooks, innerduct, and support.
- •LV-200 Termination: punching down at the patch panel and jack, connector installs on fiber, dressing and labeling at both ends.
- •LV-300 Testing/certification: Fluke or equivalent certification testing per drop, generating pass/fail test reports.
- •LV-400 Labeling/documentation: as-built labeling scheme, patch panel maps, and the closeout test-report package.
- •LV-500 Rework: any drop that fails certification and has to be re-terminated or re-pulled — tracked separately so rework cost doesn't get buried inside LV-200 or LV-300.
Tracking production by the drop, not the hour
Hours worked is the wrong unit for a cabling crew because the real deliverable is a certified, working drop. The number that matters is drops completed and passed per crew-day against the quantity the bid assumed. If the estimate assumed a two-man crew could pull, terminate, and test 24 drops a day in an open-ceiling commercial space, and the field is actually running 16, that gap is either a productivity problem worth coaching or a bid that underestimated ceiling congestion — and you want to know which one within the first week, not at the punch list.
A cost-coded <a href="/features/daily-reports">daily report</a> that captures drops pulled, drops terminated, and drops tested and passed by cost code gives you that number every day the crew is on site. Multiply drops completed by the labor hours logged against that code and you get cost per drop in near real time — the same PF/PI math used on any productivity-tracked scope, just denominated in drops instead of linear feet or fixture counts.
Worked example: cost per drop on a 400-drop office build-out
Say the bid carried 400 Cat6 drops at an estimated 1.1 labor hours per drop fully installed (pull, terminate, test, label) — 440 total labor hours, and at a $58/hr fully burdened crew rate that's $25,520 in labor budget, or $63.80 per drop.
Two weeks in, the crew has completed and certified 150 drops and logged 190 labor hours against LV-100 through LV-400 combined — that's 1.27 hours per drop, about 15% over budget. A PF of 0.87 (planned 1.1 hours ÷ actual 1.27) tells you the crew is running behind pace. Before assuming it's a productivity issue, check LV-500: if rework hours are a big chunk of that 190, the real story is failed certifications — meaning the termination process, not the crew's speed, is what needs fixing. That's exactly the kind of read you can't get from one lump low-voltage code.
Where this connects to the rest of the job
Cost-coded cabling data doesn't need a separate system from the rest of the project. The same job-costing structure that tracks branch circuits, panel installs, and gear sets on an electrical job handles cabling cost codes side by side, rolling up into the same <a href="/features/pm-dashboard">PM dashboard</a> budget-vs-actual view. A generator install and a structured cabling scope on the same job can each run their own cost codes and still show up on one project's overall PF/PI and cost-to-complete.
Field PM was built for electrical contractors first, and low-voltage/structured cabling work is a common scope inside those same jobs — so the daily report, cost coding, and productivity tracking apply directly without a separate tool for the cabling crew. For contractors running <a href="/electrical-job-costing-software">electrical job costing</a> already, adding LV cost codes is a configuration change, not a new system.
Frequently asked questions
What's a reasonable labor unit for a Cat6 drop?+
It varies heavily by ceiling access, cable path length, and whether it's new construction or retrofit, but many estimators use roughly 0.75 to 1.5 labor hours per fully installed and certified drop (pull, terminate both ends, test) in typical commercial open-ceiling conditions. The only reliable number is your own historical cost-per-drop from prior jobs, tracked by cost code.
Should fiber drops use the same cost codes as copper?+
Use the same code structure (rough-in, termination, testing, labeling) but track fiber and copper as separate cost codes or at least separate line items, since fiber termination and certification take meaningfully longer per drop and have a different failure/rework rate than copper punch-downs.
How do I handle drops that fail certification and need rework?+
Code the rework time separately (a code like LV-500) rather than folding it back into termination or testing. That keeps your base labor-unit numbers clean for future estimating and gives you a visible rework rate — a strong signal of whether an install method or a specific technician's terminations need attention.
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