Home Networking & Data Points

A wired home network is one of the most underrated renovation upgrades. Wi-Fi is convenient but lossy, walls, microwave ovens, and neighbouring networks all degrade the signal. A properly cabled Ethernet network gives you rock-solid bandwidth to TVs, gaming consoles, home offices, and network-attached storage, and it lasts the lifetime of the building if done with quality cable and terminations.

This guide covers cable types, data point costs, routing strategies, and the regulatory requirements that apply in England and Wales.

How Much Do Data Points Cost to Install?

These prices include a qualified electrician (or network installer) supplying and running the cable, terminating at a data point faceplate, and testing with a cable tester. They do not include broadband router upgrades, switches, or Wi-Fi access points.

Cable Types: What to Specify

The most important decision is cable category. In 2026, the realistic choices for UK residential are Cat 6 and Cat 6A.

Cat 5e is legacy and not worth specifying, the price difference to Cat 6 is minimal and the headroom is significantly less.

Cat 6 is the default for retrofitting existing homes. It handles Gigabit Ethernet without issue and fits through standard 20 mm conduit. For a typical home with a 1 Gbps broadband connection, Cat 6 is more than adequate.

Cat 6A is worth the premium in new builds or full rewires where cables are being run in conduit anyway. The thicker cable (often 7–9 mm) is harder to route through tight bends, but the 10 Gbps capacity future-proofs the installation for 15–20 years.

Cable standard: Specify S/FTP (an overall braided screen with each pair individually foil-screened) cable for best interference rejection, particularly if cables run parallel to mains wiring. Unshielded UTP is acceptable in most homes provided it is kept apart from mains cables: BS 7671 requires data circuits to be segregated from mains circuits or insulated for the higher voltage, and installers commonly leave a gap of around 50 mm where the two run side by side.

Where to Run Cables

Central Distribution Point

Every data network works best with a star topology, all cables radiate from a central patch panel to each room. Choose a location with:

• Proximity to the incoming broadband entry point (master socket location).
• Ventilation, a network cabinet in a small closed cupboard will overheat switches.
• Mains power access (for switch, router, NAS).

Common locations: hallway cupboard under stairs, loft, utility room.

Cable Routing Options

Surface trunking (PVC dado trunking) is the fastest retrofit option. White 50 × 25 mm PVC trunking runs along skirting boards or dado height and looks acceptable in utility spaces. It is not suitable for rooms where aesthetics matter.

Chased into solid walls gives a flush finish but adds significant cost, expect 1–2 hours of chasing, patching, and making good per cable run.

Through stud walls and ceiling voids is usually the most cost-effective concealed method. Cables drop from the loft or rise from under floors and emerge at back-box positions. Requires a stud finder and is much easier during a renovation than in a fully decorated home.

In conduit, always run cables inside 20 mm (Cat 6) or 25 mm (Cat 6A) conduit if you are chasing into solid walls or running in floor screeds. This allows cable replacement without re-chasing, a 10-year investment that always pays off.

Termination and Testing

Data points terminate in RJ45 keystones mounted in standard UK single or double gang back-boxes. Specify Cat 6-rated keystones and patch panels, mixing cable and connector categories defeats the purpose of upgrading.

A basic cable test (wiremap test) confirms correct pin-out and no shorts. A full qualification test (performed with a Fluke DSX or similar certifier) certifies each run to the Cat 6 or 6A standard and is worth requesting for new builds or if you are paying for structured cabling.

Regulatory Considerations

Data cabling is extra-low-voltage signal wiring, and running it is not notifiable to building control: under Part P of the Building Regulations, only a new circuit, a consumer unit replacement or work in a special location such as a bathroom has to be notified.² However:

• Any new mains sockets for a network cabinet must still meet Part P, and the work has to be notified to building control if it needs a new circuit or is in a special location.²
• Cables passing through compartment walls (e.g. party walls, floors between flats) must be fire-stopped: seal around them with intumescent sealant or a proprietary fire-stopping product.²
• In loft spaces near roof insulation, use cables rated for elevated temperatures (typically specified in the cable data sheet).

Wi-Fi Access Points vs More Data Points

For a modern home, the best approach is often a hybrid: wired Ethernet to each floor, with a ceiling-mounted Wi-Fi 6 or Wi-Fi 7 access point on each level powered via PoE (Power over Ethernet) from the central switch. This gives you reliable wired connections where you need them and consistent Wi-Fi coverage throughout. A PoE access point installation (cable, back-box, ceiling AP) runs £150–£300 per unit in 2026 including labour.

DIY vs Professional

Terminating Cat 6 keystones is a learnable skill, a punch-down tool costs £8–£15 and YouTube has excellent tutorials. The risks are:

• Incorrect pin-out (T568A vs T568B), causes no link; easy to fix but wastes time.
• Excessive untwisting at termination, degrades Cat 6 performance; keep untwisted length under 13 mm.
• Cable damage from over-tight bends, a common rule is a bend radius of at least four times the cable diameter, roughly 25 mm for Cat 6 and 30–35 mm for Cat 6A.

Running cable through building fabric, particularly chasing solid walls or penetrating firewalls, is better left to a professional unless you have renovation experience. The cable itself is cheap, the making-good work after a bad chase is not.