Your building's cabling infrastructure is the backbone of every network, phone system, and data service that keeps operations running. When it's outdated or undersized, you face downtime, slow speeds, and expensive emergency fixes. Planning an upgrade properly—and choosing the right contractor—saves money, prevents costly mistakes, and ensures your system scales with your business.
Assess Your Current Infrastructure
Before calling contractors, understand what you're working with. Walk your facility and document:
- Cable types in use: Cat5e, Cat6, Cat6a, fiber, or a mix
- Age of installation: Cabling from 2010 or earlier often needs replacement
- Current utilization: Are runs full? Are patch panels overcrowded?
- Future demands: More workstations, video conferencing, cloud services, or bandwidth-heavy applications?
Pull your existing documentation or request as-builts from your current provider. If records are missing, budget 10–15 hours for a contractor to survey and map the system. This costs $1,500–$3,500 upfront but prevents surprises mid-project.
Define Your Upgrade Scope
Cabling upgrades aren't one-size-fits-all. Common scenarios include:
- Partial refresh: Replace runs to specific areas (often 20–40% of the infrastructure)
- Full upgrade: Rewire the entire building to new standards
- Future-proofing: Install Cat6a or fiber now to avoid another upgrade in 5 years
- Mixed-use upgrades: Separate data, voice, security camera, and HVAC control cabling
A 10,000 sq. ft. office typically costs $25,000–$60,000 for a full Cat6a upgrade (materials + labor). Fiber backbone installations add $8,000–$15,000. Labor is usually the bulk of the cost, so efficient design and proper planning directly impact your bottom line.
What to Look for in a Contractor
Not all low-voltage contractors are equal. When evaluating candidates:
- Certifications: Look for TIA/EIA, CompTIA Network+, or manufacturer-specific credentials (Panduit, Commscope, Legrand)
- Local experience: Contractors familiar with your building type (data center, healthcare, office, manufacturing) work faster and spot problems early
- Insurance and bonding: Minimum $1M general liability; bonding protects your project
- References and timeline: Ask for 3–5 recent projects of similar size; request realistic completion dates broken down by phase
- Testing credentials: Verify they use calibrated cable testers and provide certification documentation (TIA-568 compliance reports)
A reputable contractor will spend 2–4 hours onsite before quoting, not estimate over email.
Request Detailed Proposals
Generic quotes are red flags. Demand specifics:
- Material costs broken out by cable type, connectors, and panels
- Labor hours and crew size
- Testing and certification included or extra
- Cleanup and old cable disposal
- Warranty period (typically 3–5 years on materials and workmanship)
- Downtime windows and phasing strategy
- Change order process for unforeseen conditions
Compare 2–3 proposals side-by-side. The cheapest bid often cuts corners on termination quality or testing; the highest rarely justifies premium pricing. Mid-range proposals with clear documentation are usually the best value.
Plan Installation Phases
Structured cabling upgrades require downtime. Work with your contractor to minimize business impact:
- Phase 1: Install new infrastructure in unoccupied areas (closets, cable runs, patch panels)
- Phase 2: Cut over individual departments during off-hours or over weekends
- Phase 3: Decommission old cabling and test final connectivity
A 20,000 sq. ft. facility typically needs 3–6 weeks for full installation, depending on building complexity and crew availability. Establish a communication plan so IT knows when specific areas will lose connectivity.
Use Tools to Compare Providers
Finding vetted, local structured cabling contractors takes time. Mercoly helps you compare trusted providers in your area, review their credentials, and get quotes—all in one place, so you're not hunting through multiple sites or relying on word-of-mouth alone.
Frequently Asked Questions
Q: Should I upgrade to Cat6a or fiber now, even if I don't need it yet? Cat6a supports up to 10 Gbps and has more headroom than Cat6; if your building will operate 7+ years longer, the small upfront premium ($2–4 per foot more) often pays for itself by avoiding a second upgrade.
Q: How do I know if testing and certification are actually done? Ask the contractor for a TIA-568 compliance report showing channel attenuation and near-end crosstalk (NEXT) values; reputable providers always provide this documentation in writing.
Q: What happens if a contractor runs out of time or doesn't finish on schedule? Include a completion date, penalty clause (e.g., $X per day overdue), and dispute resolution terms in your contract before work starts.
Use these steps and criteria to hire a contractor who delivers reliable, compliant cabling on time and on budget.