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Home network wiring — most people should buy mesh instead

Mesh Wi-Fi is cheaper, quicker and good enough for the majority of households. Cable is the answer to a short list of specific problems. Here is that list, honestly, before you spend anything.

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In short

What is home network wiring?

Retrofit home network wiring means adding Ethernet drops to a house that was built without them, terminated at a central point and at wall outlets in the rooms that need them. Before spending anything on it, be clear that a good mesh Wi-Fi system solves most household coverage problems for less money and in an afternoon. Cable is worth it for a specific set of reasons — feeding access points, connecting devices that have no radio, and work that cannot tolerate a dropout.

Triggers

Signs you need home network wiring

You already have mesh and the far nodes are slow, because they are relaying everything back over the air instead of being fed by a wire
Your work depends on a stable upload — video calls, remote desktop, large file transfers — and it degrades at exactly the wrong moments
You have equipment with no wireless radio at all, or with a radio you would rather not depend on, sitting in a fixed location
The house has thick masonry walls, foil-backed insulation or a metal-framed extension, and no amount of node placement has fixed the dead zone
A room has become an office or a studio and the connection there has to be as good as the one at the router
You are building, extending or gutting, and cable can go in for the price of the cable rather than the price of the access
You have old telephone or coaxial outlets in useful positions and wonder whether those routes can be reused

Seeing something not on this list? Browse smart home problems by symptom →

The job

How home network wiring actually works

Prove the problem before buying the solution

Walk the house with a phone and check the actual throughput and stability in the places that matter, at the times they matter. A lot of complaints traced properly turn out to be one badly-placed router, an old device, or a service problem — none of which cable fixes.

Watch for: A quote for drops in every room before anyone has measured anything. The number of drops should follow from a survey, not from a room count.
Decide honestly between mesh, cable, or both

The usual right answer is both, in a particular shape: wireless for everything mobile, and cable used sparingly to feed the access points that serve it. A pair of hardwired access points fixes more coverage problems than a dozen data outlets, because the thing that was actually broken was the wireless backhaul.

Watch for: Being sold a drop to every room as though outlets were the point. Very few household devices use a wall socket any more. The cable that matters is the cable feeding radios.
Choose the central location and set it up as one

Every run terminates at one place: a patch panel or a set of keystone outlets, next to the switch and the incoming service. It needs mains power, ventilation and room to work, and it wants to be reasonably central so no run is longer than it has to be. A utility room or a basement usually beats the cupboard the incoming line happens to enter.

Watch for: A stack of unlabelled cables punched down in an airless cupboard because that is where the line came in. This is the decision that most affects how pleasant the network is to live with for the next decade.
Plan the drops around the things that cannot move

Prioritise access-point positions — usually ceilings or high on walls, centrally in the areas they serve — then fixed equipment, then anywhere someone works. Two runs to each position rather than one is standard practice, because the second one costs almost nothing while the wall is open.

Watch for: A single cable to an access-point position. If that one run is damaged or a future device needs a second, the entire access job repeats for the sake of a few dollars of cable.
Finding routes in a house that is already finished

Existing vertical paths do most of the work: the space beside a soil stack, a redundant chimney, an airing cupboard, the void a previous coaxial or telephone run used. Loft and floor voids handle the horizontal travel. Where an old cable exists in a useful route, it can sometimes be used to pull a new one through.

Watch for: Routes shared closely with mains cable over long parallel runs, and staples driven through the jacket. Both cause intermittent faults that get blamed on the equipment for months.
Terminating outlets and the panel end

Each run lands on a keystone outlet in the room and on the patch panel or a labelled outlet at the central end. The pair twist is kept right up to the punch-down and the jacket is not stripped back further than it needs to be, because that is where the performance of a run is usually lost.

Watch for: Long untwisted tails at the termination. It is invisible, it passes a basic continuity test, and it quietly caps what that run can do.
Testing and labelling every run

Every run is tested and both ends carry the same identifier, with a simple schedule listing which panel port serves which outlet. Testing happens before the walls are made good, for the obvious reason.

Watch for: Runs verified by plugging a laptop in and seeing the internet. That proves almost nothing about whether the run performs to its rating, and it is the reason some retrofit installs never deliver what they promised.
Configuring the network on top of it

Cable is only the foundation. Access points need their channels and power set so they cooperate rather than compete, the switch needs to be able to power them if they are ceiling-mounted, and it is worth deciding at this point whether guest and device traffic should be separated.

Watch for: Several access points left on default settings at maximum power. They interfere with each other, and clients cling to a distant one instead of moving to the near one.

Money

What does home network wiring cost?

Priced by access, not by the number of outlets. Drops into an open loft or a basement ceiling are quick; the same drops into a finished two-storey interior wall are not. During construction the marginal cost is close to the price of the cable. Mesh Wi-Fi costs a fraction of either. See the Cost Guide.

See the full home network wiring cost guide — by material, size and region →

Straight answer

When home network wiring is the wrong call

Everyone else ranking for this is paid when you say yes. Here's when you shouldn't.

A mesh system would fix it. This is the majority case and nobody ranking for this term will say it. If the complaint is coverage in a normal-sized house, buy mesh first — it is far cheaper, it takes an afternoon, and if it works you have saved the whole job.
The bottleneck is your internet service. Wiring the inside of a house does nothing about what arrives at the door. Test the connection at the router before assuming the house is the problem, because if the line is the limit, the cable changes nothing you will notice.
You rent. Drops mean holes and outlets in someone else's walls, and they stay behind when you leave. Mesh and powerline adapters move with you.
You want a socket in every room for its own sake. Almost nothing in a modern house plugs into a wall socket. Drops to access-point positions and to genuinely fixed equipment are worth paying for; a symmetrical outlet in each bedroom mostly is not.
Building work is planned within a year or two. Retrofit routing is the expensive part and the walls are about to open for free. Wait, then run more cable than you think you need.
Your only wired device is a games console next to the router. A patch cable across the room costs nothing and solves it entirely.

Your options

Types of home network wiring

Mesh Wi-Fi against wired

The comparison to make before spending anything.

Cable and outlet types

Categories, in-wall ratings, keystones and patch panels.

Network infrastructure

Central location, switching and access-point placement.

Compare smart home options side by side →

Straight answer

Can I do this myself?

Network cable carries no dangerous voltage, but where it goes does. Never drill or fish blind into a wall or ceiling without establishing what is behind it — mains cable, water and gas services all share those voids, and a fish rod pushed hard will find them. Keep new runs clear of mains conductors, and anything crossing between floors or into a garage has firestopping requirements.

Reasonable to DIY

Buying and setting up a mesh system first to find out whether you need any of this
Running cable in open, accessible spaces — an unfinished basement, an accessible loft, a garage or a surface-mounted trunking run
Terminating keystone outlets and patch panels, which is a learnable skill with a cheap tool
Pulling new cable through using an existing redundant coaxial or telephone run as a draw wire
Labelling everything and testing runs with a basic wiring tester
Positioning and configuring the access points once the cable exists

Call a licensed pro

Fishing drops into finished, insulated walls and ceilings, which is the entire cost of a retrofit and mostly a route-choice skill
Any run crossing a fire separation between floors or into an attached garage
Anything needing a new mains circuit or outlet at the central location
Ceiling-mounted access points, where the cable, the mounting and the making good all meet
Certified testing of the finished runs, which needs a tester nobody buys for one house
Whole-house work during a build, which has to be sequenced against the other trades

Before you sign

What to check when hiring for home network wiring

Did you measure my current coverage before recommending cable?

A survey should precede a quote. Without one, the number of drops is a guess and possibly the whole job is unnecessary.
How many of these drops are feeding access points?

It is the useful question. Cable that feeds radios fixes coverage; cable that feeds an unused wall socket in a bedroom does not.
Where is the central point going, and does it have power and ventilation?

You live with this decision for years. The cupboard the incoming line arrives in is often the worst available choice.
Are you pulling two runs to each access-point position?

The second cable costs almost nothing while the route is open, and it is insurance against a damaged run or a future device.
Will every run be tested and certified, and will I see the results?

A run that merely connects is not the same as a run that performs to its rating, and the difference only shows up under load.
How are the runs kept away from mains cable?

Long parallel proximity causes intermittent faults that look like equipment problems and take weeks to trace.
What making good is included, and does that extend to decorating?

Retrofit drops mean access holes in walls and ceilings. Whether patching and painting are your problem should be settled before work starts.

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Local pros

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FAQ

Home Network Wiring — questions people ask

Still have a question? Talk to our team →

Is wiring my house for Ethernet worth it, or should I just get mesh Wi-Fi?

For most households, get mesh first. It costs a fraction as much, it goes in the same day, and if it fixes the problem you have avoided the entire job. Cable becomes worth it in a nameable set of cases: when mesh nodes are slow because they are relaying over the air and would perform far better fed by a wire, when work depends on a connection that cannot drop, when fixed equipment has no usable radio, and when the building itself blocks signal in a way node placement cannot solve.

What is wired backhaul and why does it matter so much?

In a mesh system, the nodes have to get their data back to the router somehow, and by default they do it over the air — using the same radio capacity they are also serving your devices with. Each hop costs throughput, which is why the node at the far end of the house feels slow even when its signal bar is full. Feeding those nodes with cable removes that penalty entirely. It is the single highest-value use of a network drop in a home, and it usually means two or three runs rather than a house full of them.

How many Ethernet drops does a house need?

Fewer than most quotes suggest, and in different places. Start with the access-point positions, since those fix coverage for everything wireless. Add the genuinely fixed things — a desk that is a workplace, equipment with no radio, a media position. Beyond that, extra outlets in bedrooms are rarely used, because almost nothing consumers buy has a socket any more. Where a run is going in anyway, though, pull two: the second cable is nearly free while the wall is open.

Can I run network cable through a finished house?

Yes, and it is the normal case — but the routing is where the money goes, not the cable. Installers look for existing vertical paths first: the void beside a soil stack, a redundant chimney, an airing cupboard, or an old coaxial or telephone run that can be used to pull the new cable through. Lofts and floor voids handle the horizontal travel. Two-storey houses with insulated interior walls and no accessible void above the ground floor are the expensive shape.

Will Ethernet make my internet faster?

It will make the connection inside your house faster and far more consistent, which is often what people actually mean. It cannot do anything about the service arriving at the property. If a speed test at the router already shows what you are paying for, cable will improve stability, latency and the experience at the far end of the house. If the router itself is slow, the problem is upstream and no internal wiring will touch it — test that first.

What about powerline adapters instead of running cable?

They are a reasonable middle option and worth trying before committing to the access work, because they cost little and are entirely reversible. Their performance depends heavily on the house wiring — how the circuits are arranged, what else is running, and whether both adapters sit on the same phase — so results range from surprisingly good to barely usable, and the only way to find out is to try. If they work in the position you need, you have saved the whole retrofit.