Two contractors walk your building. Both quote "Cat6 to 48 locations." One comes in at nearly half the price of the other. Same cable, same wall plates — so where did the money go?

Usually, into the parts you can't see. Here's how to read past the bottom line.

The words that actually matter

"Plenum" vs. "riser" cable. If your cable runs through air-handling space above a drop ceiling, fire code requires plenum-rated jacket (CMP). It costs meaningfully more than riser (CMR). A low quote that doesn't specify the rating is often a quote for the wrong cable — and a failed inspection later.

"Terminated and tested" vs. "certified." Anyone can plug a $50 tester into a jack and get a green light. Certification means every run is tested against the TIA standard with a calibrated instrument, and you get the report — length, wire map, crosstalk, insertion loss, for every port. If the quote doesn't include certification reports, the installer is asking you to take their word for it.

Labeling. A properly labeled installation has a unique ID on both ends of every cable and a matching schedule in your handoff documents. Unlabeled cabling works fine on day one. It becomes very expensive on day 400, when someone has to trace a dead port through a bundle of identical blue wires at $150 an hour.

Pathway and support. Cable laid directly on ceiling tiles is a code violation in most jurisdictions. J-hooks, tray, and sleeves cost money and show up as line items. If they're absent from a quote for a building without existing pathway, that cost is coming later — as a change order.

Questions that sort the field quickly

  1. "Who actually does the work?" Employees, or subcontractors found last week? There's a reason to ask: accountability for workmanship follows the answer.
  2. "What documentation do I get at handoff?" The right answer includes test reports for every run, labeled drawings, and a warranty in writing. The wrong answer is a blank stare.
  3. "What's the warranty, and who backs it?" Manufacturer-backed system warranties (15–25 years) exist when certified installers use matched components and submit the test results. A "we'll come fix it" verbal promise is not a warranty.
  4. "What happens if the count changes?" Get unit pricing for adds before you sign. A contractor who won't give a per-drop price is planning to price your change orders under pressure — theirs, not yours.

A fair quote looks like this

  • Cable type and jacket rating named explicitly
  • Termination hardware specified by brand and category
  • Pathway/support materials as visible line items
  • Certification testing with reports included, not "available"
  • Labeling scheme and as-built documentation at handoff
  • Warranty terms in writing, with who stands behind them

The goal isn't to buy the most expensive bid. It's to make sure every bid is for the same job — because the cheapest way to install cable is to skip the parts you'll only miss when something breaks.