Planning networks and data cables – structured cabling in new buildings
In this era of remote work, streaming, and smart homes, structured network cabling is just as important as the power supply. Wi-Fi alone is not sufficient for stable, fast connections. This guide shows you how to plan your data network correctly from the outset.
Why structured cabling?
Wi-Fi is convenient, but it is no substitute for cable connections. Walls, ceilings, and sources of interference significantly reduce range and speed. A cable infrastructure is the basis for stable internet.
Full speed ahead
Cable connections deliver a steady 1–10 Gbps without fluctuations. Ideal for home offices, 4K streaming, and large data transfers.
Maximum reliability
No connection interruptions due to sources of interference, neighbors' Wi-Fi networks, or thick walls. Cable is interference-free and has low latency.
Future-proof
Once installed, cables will last for decades. The investment safeguards you for future bandwidth requirements (fiber optics, Wi-Fi 7 access points).
Comparison of cable types
| cable type | Max. data rate | frequency | Recommended use |
|---|---|---|---|
| Cat 6a | 10 Gbit/s | 500 MHz | Standard for home networks, sufficient for most applications |
| Cat 7 | 10 Gbit/s | 600 MHz | Recommended for new construction – better shielding, higher reserve |
| fiber optics | 100+ Gbit/s | – | Home connection (FTTH), long distances, building networking |
Room planning – Where do I need data sockets?
living room
At least two double sockets: one at the TV location (smart TV, streaming box, game console) and one at the work area. Additional ceiling outlet for Wi-Fi access point.
Home office / study
At least two double sockets at your desk (PC, VoIP phone, printer, NAS). A cable connection is particularly important here for stable video conferences.
Utility room / laundry room
This is where the network cabinet with router, switch, and patch panel is located. Fiber optic cables entering the building and all data cables converge here in a star configuration.
Network cabinet – The heart of the system
All data cables converge in a star configuration in the network cabinet. It should be located in the utility room or laundry room and be adequately ventilated.
patch panel
All installation cables are connected to a patch panel. From there, they are connected to the switch via patch cables. Standard: 24-port patch panel for a single-family home.
managed switch
A gigabit switch (at least 16 ports) distributes the network. Managed switches enable VLANs and prioritization for smart homes and streaming.
Practical tips for network cabling
1. Plan for at least two data sockets per room.
Retrofitting is expensive and time-consuming. Every room should have at least one double socket—including the kitchen, bedroom, and hallway.
2. Prepare Wi-Fi access points on the ceiling
A Cat6a cable and a power supply (PoE or power outlet) on the ceiling in the hallway are sufficient for perfect WiFi coverage throughout the house.
3. Separate empty conduit for fiber optics
Lay your own empty conduit from the house connection room to the network cabinet. This will allow the fiber optic technician to easily pull in their cable later.
4. Use Cat 7 – even if Cat 6a is sufficient
The price difference is minimal, but Cat 7 offers better shielding and higher frequency reserves. With a service life of 30+ years, it is a sensible investment.
Conclusion: Network cabling belongs in every new building
Structured network cabling is inexpensive to install in new buildings and adds value to the property. It forms the basis for fast internet, stable Wi-Fi, and smart home systems.
Tip: Plan the network cabling together with the electrical installation—the cables will be laid in the same slots and empty conduits.