Network cabling for a new home: what should you plan?

In a new home, the network infrastructure should bring cable to devices that will stay in place and to the points that will provide Wi-Fi. Do not begin with an arbitrary number of sockets per room. Start with a furnished floor plan, mark televisions, desks, cameras, the video intercom and technical equipment, then bring every connection back to an accessible central point.

Cabling is easy to change while the walls are open and disruptive to add after the finishes are complete. More outlets are not a substitute for a design, however. Each point needs a purpose and a clear plan for connection, power and testing.

Plan around how each room may be used

An empty floor plan hides the decisions that matter. Moving a desk, television unit or bed can put a network outlet on the wrong side of a wall. A living room with two credible layouts may need connections in both areas. A hallway may not need a low-level socket at all, but its ceiling could be the right position for a wireless access point.

Mark three types of connection:

• Fixed devices such as televisions, desktop computers, games consoles, controllers and plant equipment.
• Building infrastructure such as Wi-Fi access points, cameras, the video intercom and entrance gates.
• Flexible rooms, such as a bedroom that may later become a home office.

One connection behind a television or desk can lead to a small visible switch when more devices arrive. You can provide several wall ports or accept that local expansion. The better choice depends on furniture space, nearby power and whether the equipment will remain accessible for maintenance.

Bring every run back to one technical location

Each network outlet should have its own route back to the distribution point, without hidden branches. This is where the cables terminate and where the switch, service-provider equipment and device power supplies may need to live.

Allow more than enough room for bare cables. Check usable depth, ventilation, electrical outlets, earthing where required and enough clearance to replace hardware without dismantling the cabinet. A panel that only closes while it is empty will soon have a router or switch hanging beside it.

The fibre entry point is not automatically the best place to broadcast Wi-Fi. If the technical cabinet sits at one end of the house or behind a metal door, cable suitable positions for access points in open areas. Our guide to Wi-Fi mesh and wired access points explains when that wired foundation matters.

Include Wi-Fi, cameras and entrances

Phones and laptops may connect wirelessly, but reliable Wi-Fi still needs physical infrastructure. In a multi-storey home, concrete floors and outdoor areas affect where access points belong. Decide provisional positions on the drawing, then verify them on site. Grouping every access point beside the technical cabinet makes coverage depend on the least favourable location.

Cameras, intercoms and other fixed equipment also benefit from dedicated connections. Where both the device and switch support PoE, one Ethernet cable can carry data and power. That can simplify installation, but the switch and backup power still need to be sized for the total load.

Look beyond the main rooms to the garage, gate, garden, outbuilding and plant area. Not every location needs hardware from day one. Sometimes an accessible conduit and a well-placed box preserve the option without installing a cable or device immediately.

Specify a complete link, not just a cable category

“Cat 6 or Cat 6A?” is a fair question, but it will not rescue a poor route, unsuitable outlets or an undersized cabinet. The finished link depends on the cable, connectors, terminations, length, proximity to electrical circuits and installation quality.

First establish the speeds, PoE requirements and useful upgrade margin. The designer can then specify components that work together as one link. A higher category printed on the cable does not compensate for mismatched connectors, tight bends or poor termination.

Portuguese building telecommunications infrastructure is governed by the ITED framework. ANACOM publishes the current manual and supporting guidance. Regulatory compliance is the starting point, not a substitute for discussing how the home will be used. Extra connections for networking, Wi-Fi, security or automation need to be coordinated before ceilings and walls are closed.

For a residential development, make the design consistent by unit type. A schedule covering outlet positions, labels and intended equipment reduces accidental differences between apartments and makes handover easier to verify.

Make labelling and test results part of handover

An installed socket is not proof of a working link. Before accepting the work, ask for an as-built plan showing both ends of every cable, matching labels at the outlet and cabinet, and the test report required for the installation.

Check on site that:

• Every outlet reaches the stated technical point.
• Port numbers are legible at both ends.
• The cabinet has space and power for the switch and related equipment.
• Access points and cameras can be fitted without improvised extensions.
• Spare conduits remain accessible and contain a draw wire.

Only then should you finalise the router, switch and access points. The cabling ought to outlast several generations of that equipment. Hiding it without a record turns long-lived infrastructure into a guessing game.

Review my home's cabling before the finishes go in. Send the floor plan, construction stage and intended locations for televisions, work areas, Wi-Fi, cameras and technical equipment.