Infrastructure work is largely invisible once it’s finished — cabling is behind walls, configuration is inside a switch — which makes it harder to evaluate a company’s quality by looking at the finished result alone. Here’s what to check instead.

What you’ll learn

  • What separates genuinely capable infrastructure companies from the rest
  • Specific things to ask about before hiring
  • Why documentation and design matter as much as the physical installation

Do they design before they install?

For anything beyond a single small room, a proper design phase — addressing scheme, VLAN structure, cable routes — should come before any cabling is pulled. A company that goes straight to installation without this step risks rework once gaps in the plan become apparent partway through, which usually costs more than the design step would have.

Do they certify their cabling work?

Proper structured cabling includes certification testing of every run against the relevant category standard — not just confirming a cable is connected, but confirming it actually performs to specification. Ask specifically whether this is included and whether you’ll receive the test results.

Can they show comparable past work?

Photos or descriptions of similar projects, or ideally a reference you can actually speak to, tell you more about real capability than a sales conversation. A company confident in its work is usually happy to provide this.

Do they document what they install?

Network diagrams, port schedules, and configuration records handed over at project completion are the difference between infrastructure you can maintain confidently later and infrastructure only the original installer fully understands.

Do they explain trade-offs honestly?

A company willing to say “you probably don’t need Cat6A for this, Cat6 is sufficient” — rather than always recommending the more expensive option — is generally more trustworthy than one that never suggests a lower-cost alternative.

Do they scope work around your actual operating hours?

A company that asks how your space is used, and proposes scheduling disruptive work outside business hours where needed, is planning around your reality rather than their own convenience. This is a small question with a revealing answer — a company that hasn’t thought about it likely hasn’t done much work in occupied, live offices.

Do they explain warranty and defect coverage clearly?

A specific answer about what’s covered after installation, and for how long, is a sign of confidence in the durability of the work itself. A company reluctant to commit to this is worth a closer look.

Weighing it all together

None of these signs alone is disqualifying if missing, but a company that scores well across most of them is meaningfully more likely to deliver infrastructure that’s genuinely good, not just infrastructure that works today and becomes a problem later. Treat this as a practical checklist during quoting, not just background reading — the specific answers you get are directly comparable across the companies you’re considering.