Every network installer you call will tell you they do great work. None of them will say they cut corners, skip testing, or aren’t licensed. So how do you hire a network installer when everyone sounds the same on the phone? You ask better questions. The eleven below are the ones that separate licensed pros from pretenders — the handymen, moonlighting IT guys, and lowest bidders who vanish when something fails. A real contractor answers all eleven without flinching. Watch how someone reacts to these and you’ll learn more than any five-star review can tell you.
The 11 Questions to Ask Before You Hire
Bring this list to every estimate. Below is what to ask, why it matters, and what a straight answer actually sounds like.
1. What is your contractor license number and classification?
In California, low-voltage cabling over $500 legally requires a C-7 licensed contractor. Ask for the number and look it up on the CSLB website. A pro gives it to you instantly. A pretender changes the subject. Ours is C-7 #1141654.
2. Can you show proof of insurance and bonding?
Licensed contractors carry liability insurance and a CSLB bond. If an uninsured installer damages your wall or gets hurt on your property, that exposure can land on you. Ask to see certificates, not promises.
3. Do I get a written scope of work before you start?
A real installer puts the work in writing — drop locations, pathways, materials, what is and isn’t included — before anyone touches a wall. Vague verbal agreements are how the “I thought that was included” arguments start.
4. Is this a quote or an estimate, and what happens if it runs over?
This question exposes the most pretenders. We don’t give quotes. We work time and materials against a written estimate with a floor and a not-to-exceed (NTE) cap, so you see the realistic range and the most you’ll ever pay. Anyone promising a rock-bottom flat price sight unseen is either guessing or planning to surprise you later.
5. How do you handle changes once we start?
Walls hide surprises. Ask what happens when the job changes mid-stream. A pro has a documented change-order process — approved in writing before any extra work happens — not a bigger bill at the end with no explanation.
6. What cabling standards do you follow?
The right answer mentions Cat6 or Cat6A, bend-radius and pull-tension limits, plenum ratings where required, and TIA/EIA termination standards. A vetting cable installer question like this instantly separates someone who knows the code from someone who owns a drill. It’s the same discipline behind our structured cabling work.
7. Do you label and test every run, and what documentation do I get?
Every cable should be labeled and verified with a tester, and you should get a record of it. “It works” is not testing. Labeled, tested, documented runs are the difference between a network you can maintain and a mystery box of wires.
8. Will you pull permits if my job needs them?
Some low-voltage work — fire alarm and certain commercial cabling — requires permits, and only a licensed contractor can pull them. An installer who waves off permits is waving off your liability if the work is ever inspected.
9. Have you done work like mine, here?
Bay Area buildings have their own quirks — the plaster-and-lath in older Oakland houses, slab foundations in newer San Jose builds, multi-tenant access in Fremont. Ask for local references on jobs like yours.
10. Who does the work, and who’s accountable for it?
Plenty of solid contractors use subcontractors — the question isn’t whether they do, it’s whether those people are vetted, insured, and working under the licensed contractor who stays accountable to you. What you want to avoid is anonymous day-labor nobody mentioned, with no one standing behind the result. A straight answer names who runs the crew, how the help is vetted, and exactly who you call when something needs fixing six months later.
11. What is your warranty?
A contractor who stands behind the work tells you exactly what is covered and for how long. No warranty, or a vague one, tells you they don’t expect to be reachable later.
What This List Actually Tells You
Notice the pattern. Almost none of these questions are about price. They’re about whether someone is licensed, accountable, and documented — or whether they’re hoping you won’t ask. The cheapest bid rarely survives all eleven, which is exactly why the cheap install so often becomes the expensive redo. Knowing how to hire a network installer isn’t about finding the lowest number. It’s about finding the person whose answers don’t fall apart under questioning.
Put Us Through the List
We built our entire process around passing these eleven: C-7 licensed and insured, written estimates with a not-to-exceed cap, labeled and tested runs, and a paid walkthrough that gives you a real number before anyone starts. If you’re comparing installers, put us through all eleven questions — then put everyone else through them too. It’s the fastest way to see the difference between an installer who passes the list and one who hopes you never read it. Start with a walkthrough through our contact page.
