How to Plan a New-Office Network: A Cabling Checklist

Moving into a new space or planning a fit-out is the rare moment when you get to build your network the right way from day one. This office network cabling checklist walks you through every decision that matters, from counting drops and choosing cable to placing your closet and certifying the finished job. Use it to scope the work, brief contractors clearly, and avoid the expensive rework that comes from cutting corners in the walls.

Start with a needs assessment

Before anyone pulls cable, get clear on what the network has to support. Cabling lives in walls and ceilings for 10 to 15 years, so plan for where the business is going, not just where it is today.

• Current headcount and how many people sit at fixed desks versus hot-desks.
• Growth outlook over the next 3 to 5 years, including any planned hires or team expansions.
• Devices per person beyond the obvious laptop: desk phones, monitors with docks, secondary machines.
• Shared infrastructure such as printers, multifunction copiers, conference room AV, and digital signage.
• Wireless coverage goals, since every access point needs a wired drop.
• Security and building systems like IP cameras, door access controllers, and alarm panels that increasingly ride on the same structured cabling.

Write these numbers down. They drive everything that follows, especially your drop count and closet sizing.

Map drop locations on the floor plan

Print the floor plan and physically mark every place a cable needs to terminate. A drop is a single cabled connection running from the closet to a faceplate or device. Walking the plan area by area keeps you from forgetting the corners no one thinks about until move-in week.

Where drops typically go

• Workstations: two drops per desk is a common standard, giving you a spare or a second device port.
• Conference rooms: drops for the display, a tabletop connection, a room scheduling panel, and the ceiling AP.
• Printers and copiers: one hardwired drop each; do not leave these on Wi-Fi.
• Wi-Fi access points: one drop per AP, placed per a wireless coverage plan rather than guesswork.
• Security and access control: cameras, door readers, and intercoms.
• Reception, kitchens, and common areas: easy to overlook, frequently needed later.

For a deeper room-by-room breakdown, see How Many Ethernet Drops Do You Need? A Room-by-Room Guide. The table below offers a rough starting point you can adjust to your headcount.

Choose your cable: Cat6 vs Cat6a

For most offices, the practical choice comes down to Cat6 versus Cat6a. Both support gigabit speeds easily; the difference shows up at 10 Gigabit and over longer runs.

• Cat6 handles 1 Gbps across the full 100-meter channel and 10 Gbps up to roughly 55 meters. It is a solid, cost-effective choice for typical desk and AP runs.
• Cat6a supports 10 Gbps across the full 100 meters and offers better noise rejection. It is the safer pick for backbone links, dense AP deployments, and anyone who wants to avoid re-cabling as bandwidth demand climbs.

A common approach is Cat6a for the backbone and any high-density or future-proofed areas, with Cat6 for general workstation drops. Whatever you choose, buying a slightly higher grade now is almost always cheaper than opening walls again later. Wireless performance depends on this wired foundation too, which is covered in Wi-Fi 6 & Wi-Fi 7: Why Your Cabling Backbone Matters More Than the Router.

Plan the IDF/MDF and rack location

Your cabling terminates in a wiring closet. The main distribution frame (MDF) is the primary hub; intermediate distribution frames (IDFs) are satellite closets on larger or multi-floor sites. Placement is constrained by one hard rule.

• The 100-meter limit: a permanent Ethernet run plus patch cords cannot exceed 100 meters end to end. In practice, keep horizontal cable runs under about 90 meters so patch cords fit inside the budget.
• Central placement: position the closet so the farthest drop stays within reach. On large floors or across multiple floors, add an IDF rather than stretching a single run too far.
• Rack sizing: choose a rack or wall-mount enclosure with room for patch panels, switches, a UPS, and growth.
• Physical security: a lockable room or cabinet, separate from general storage.

For closet layout, environmental, and equipment guidance, see Server Room & Data Closet Design: Best Practices for SMBs.

Pathways, power, and cooling

Cable has to travel cleanly from closet to drop, and the closet itself has to stay powered and cool. These items are easy to underbudget and painful to retrofit.

1. Pathways: plan cable trays, J-hooks, or conduit through ceilings and walls. Conduit to hard-to-reach spots makes future additions far simpler.
2. Capacity and separation: size pathways for spare cables and keep data separated from electrical lines to avoid interference.
3. Fire code: use plenum-rated cable in air-handling spaces where required, and respect firestopping at wall penetrations.
4. Power: provision dedicated circuits for the rack and a UPS to ride out outages.
5. Cooling: even a small closet packed with switches generates heat; plan ventilation or dedicated cooling so equipment does not cook.

Labeling, testing, and documentation

The finishing steps separate a professional install from a future headache. Insist on all three before you accept the work.

Labeling

• Adopt a consistent scheme; the TIA-606 standard is the widely used reference.
• Label both ends of every cable, the patch panel ports, and the faceplates so they match.

Testing and certification

• Require each run to be tested with a certification tester, not just a basic continuity check.
• Get the certification reports for every drop as proof the cabling meets its rated category.

Documentation and as-builts

• Collect an as-built drawing showing final drop locations and cable IDs.
• Keep a port-to-location map so future moves and troubleshooting are quick.

Build in future capacity

The cheapest time to add a drop is while the walls are already open. Spend a little now to save a lot later.

• Pull spare drops to desks, conference rooms, and likely expansion zones.
• Leave pull strings in conduit so additional cable can be added without opening walls.
• Size the patch panel and rack beyond current needs.
• Reserve closet space and power for the switches you will buy in a few years.

Timeline, permits, and hiring a pro

Structured cabling sits on the critical path of any fit-out, so sequence it early. Rough-in cabling has to happen before walls close, and certification before furniture arrives.

• Permits: confirm whether local code requires low-voltage permits or licensed installers, and build approval time into the schedule.
• Coordination: align with electricians, HVAC, and the general contractor so pathways and power land in the right places.
• Lead time: book the cabling contractor well ahead; good crews are scheduled out for weeks.

Cabling is specialized work that affects everything plugged into it, so hiring an experienced low-voltage contractor is usually money well spent. If you want to compare qualified installers, DigiCo Wiring is one place to start. You can also review general data wiring guidance as you scope the project.

Key takeaways

• Begin with headcount and growth, then map every drop on the floor plan.
• Choose Cat6a for backbone and future-proofing; Cat6 is fine for most desk drops.
• Keep horizontal runs under about 90 meters to respect the 100-meter channel limit.
• Provision power, cooling, and pathways for the closet, not just the cable.
• Require TIA-606 labeling, full certification testing, and as-built documentation.
• Pull spare drops and leave pull strings while the walls are open.

Frequently asked questions

How many Ethernet drops should each desk have?

Two drops per desk is a common standard. It gives you one active connection plus a spare for a second device, a desk phone, or a quick swap when something fails, all without opening walls again.

Is Cat6 enough, or should I install Cat6a?

Cat6 comfortably handles gigabit speeds and works well for most workstation drops. Cat6a supports 10 Gbps across the full 100 meters and resists interference better, making it the smarter pick for backbone runs, dense access-point areas, and anyone planning to scale bandwidth over the next decade.

Why does the 100-meter limit matter for closet placement?

An Ethernet channel, including the horizontal run and patch cords, cannot exceed 100 meters before performance degrades. Centering your wiring closet keeps the farthest drop within reach; on large or multi-floor sites you add intermediate closets rather than stretching a single run too far.

Do I need cabling certification reports?

Yes. A certification tester verifies that each run actually meets its rated category, unlike a basic continuity check. The reports are your proof the work was done correctly and a valuable reference if you ever troubleshoot or sell the cabling forward to a new tenant.