A separate building needs a real connection back to the router
The reason the $40 extender never fixes the garage is simple: it can only rebroadcast a signal it already receives, and after crossing the yard and a set of exterior walls there is barely a signal left to grab — and what is left, it halves. Getting Wi-Fi to an outbuilding means running a real link out there and putting a proper access point at the far end. Here are the ways that work, best first.
Best: buried cable to an access point
Run Cat6 in conduit from the house to the garage and mount an access point inside — now the shop has its own strong Wi-Fi, not a faint echo of the house’s. Cat6 carries a full gigabit up to about 100 metres (328 feet). Conduit costs a little more than direct-burial cable but lets you pull new lines later without digging again.
For distance or safety: fiber
Farther than ~300 feet, or you want to be safe about lightning and grounding between two buildings? Fiber is the answer — it goes much farther and, being glass, it cannot carry an electrical surge from one structure to the other. It is the cleanest way to link separate buildings.
No trenching? A point-to-point wireless bridge
When you cannot dig, a pair of point-to-point bridge radios — one on the house, one on the garage, aimed at each other with clear line of sight — beams a solid link across the gap. It is far more stable than an extender because it is a dedicated link, not a shared hop off your indoor Wi-Fi.
Skip powerline — and always add an AP at the far end
Powerline adapters usually fail to a detached garage because it is fed by its own subpanel or run the signal will not cross. And whichever link you use, finish with an access point in the building — the link gets the internet out there; the AP turns it into real Wi-Fi you can actually use.
Distance, line of sight, and what’s in the ground decide it
Three things pick the method. Distance: under ~300 feet with a path to trench, buried Cat6 is the best value; beyond that, fiber. Line of sight: if you can see the garage roof from the house eave, a wireless bridge is quick and clean; if trees, a fence or another structure block the view, a bridge will be flaky and you want a cable. What’s already in the ground: an existing empty conduit or a spare trench for a new subpanel is a gift — we piggyback on it. Around Bakersfield we lean toward fiber between buildings more than most installers do, for one local reason: our summer grid and the odd lightning cell send surges between structures, and copper run building-to-building can carry that straight into your gear. Fiber sidesteps it entirely. Tell us how far the garage is, whether you can see it from the house, and what the path looks like, and we will tell you the right method and quote it flat — no guessing, no ripped-up yard for a link that was never going to hold.
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Real Wi-Fi in the shop, not a dropout
We run the cable or fiber, set the bridge, and put a proper access point in the building so it has its own solid signal — for cameras, a TV, a workshop laptop, whatever lives out there. Tell us the distance and the path and we will quote it.
More guides: Fix Wi-Fi dead zones · Do you need mesh Wi-Fi? · Best internet in Bakersfield
Quick answers
Why won’t an extender reach the garage?
It can only rebroadcast a signal it already receives, and across a yard and exterior walls there is little left — and it halves what it does grab. A separate building needs a real link, not a hop.
What’s the most reliable option?
A buried cable — Cat6 in conduit, or fiber for distance — feeding an access point in the garage. Where you can’t trench, a point-to-point wireless bridge with line of sight.
How far can ethernet run?
Cat6 carries a gigabit to about 100 metres (328 feet). Past that, or between buildings where surges are a concern, use fiber.
Do powerline adapters work to a garage?
Usually not — a detached garage is often on its own subpanel, which the powerline signal won’t cross. A cable run or wireless bridge is the dependable fix.