Ethernet Sockets Not Working in Your New Build? How to Connect Them (and Get Wi-Fi Everywhere)
7 November 2026 · By Ethan Fernandes
Moved into a new build and the network sockets on the walls don't work? They're usually wired to a cupboard but never connected. Here's how to make them work, plus Wi-Fi, CCTV and smart home tips for new homes.
Quick fix
New-build data sockets are usually wired back to a cupboard but never connected. Find where the cables end, often under the stairs, in a utility room or the loft, connect them or the patch panel to a network switch, connect the switch to your router, then test and label each socket. Use a socket on each floor for a Wi-Fi access point.
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Get help todayIt's one of the most common surprises in a new build house or flat: there are network sockets in the living room, bedrooms and study, but plugging a TV or laptop into them does nothing. The developer hasn't done anything wrong as such. The cables are usually in place, but nobody has connected them at the other end.
The short version: the wall sockets run back to a cupboard, often under the stairs, in a utility room or in the loft, where they end in a patch panel or a bundle of cables. To make them work, connect them to a network switch and connect the switch to your router. Then test each socket and label it. A ceiling or wall Wi-Fi access point on one of those cables gives you strong Wi-Fi on every floor.
Step 1: Find Where the Cables End
Look in the understairs cupboard, the utility room, the loft hatch area or a cupboard near where the broadband comes in. You're looking for a patch panel (a row of numbered sockets), a box of cables with plugs on the end, or a small media enclosure. It's often next to the Openreach or full fibre box.
Step 2: Connect Them to the Router
- Put the router in that cupboard if the broadband comes in there. If not, run one cable from the router to the cupboard.
- Add a network switch with enough ports for all the cables.
- Connect each patch panel socket, or each cable, to the switch with a short patch lead, and connect the switch to the router.
- Test every wall socket with a laptop, and label the panel with the room names.
Step 3: Fix the Wi-Fi Properly
New builds are well insulated, often with foil-backed boards, which is great for heating bills and bad for Wi-Fi. A router in a cupboard under the stairs rarely covers the whole house. Use one of the wall sockets on each floor for a Wi-Fi access point or a mesh unit with a wired connection, and every room gets a strong signal.
Step 4: Add Cameras and a Doorbell
If the developer has fitted cables outside, or there's a loft for running new ones, wired PoE cameras and a video doorbell are far more reliable than battery models. Point cameras at your own property only. See CCTV cameras keep going offline.
Checklist for New-Build Buyers
- Ask the developer for a plan of the data points and where they terminate.
- Find out which broadband is available, and order it early, before you move in if possible.
- Check where the broadband line enters, so the router can sit near the data cupboard.
- If you're buying off-plan, ask about adding data points, ceiling access point cables and camera positions before plastering.
How We Handle It
We get new-build networks working: connecting and testing every data socket, fitting a switch and labelling the panel, setting up Wi-Fi access points or wired mesh on every floor, and connecting TVs, cameras, doorbells and smart home devices. If you're still at the planning stage, we can plan the network with your builder. We work across West London. See our Wi-Fi, CCTV and smart home for renovations and new builds and Wi-Fi and home networking.
Related Reading
Common questions
They're usually wired back to a cupboard but never connected to anything. Connect the cables, or the patch panel, to a network switch and connect the switch to your router, then test each socket.
Usually to a cupboard under the stairs, a utility room, the loft or near where the broadband comes in, ending in a patch panel or a bundle of cables. Ask the developer for the data point plan.
Yes, if you have more data sockets than spare ports on your router. A switch connects all the wall sockets to the router so they all work.
Use a wall data socket on each floor for a Wi-Fi access point or a mesh unit with a wired connection. Modern insulation blocks Wi-Fi, so a single router rarely covers the whole house.
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Most problems like this can be fixed remotely today, anywhere in the UK, or with a home visit across West London. DBS checked, insured, 7 days a week until 9pm.
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