You can survive a lot of home-inspection surprises. A leaky faucet, a dated kitchen, a weird smell in the basement — annoying, fixable, negotiable. A house where your work laptop can't hold a Zoom call is a different kind of problem, especially if "go into the office" isn't actually an option for you anymore. If your job lives on video calls, Slack, and a stable connection, internet and cell coverage aren't a nice-to-have on your house-hunting checklist — they're closer to load-bearing.

Here's the direct answer: check the FCC's national maps for both broadband and mobile coverage at the specific address, then verify with each individual carrier and ISP's own address-level tool (their numbers are more granular and more current than the government aggregate), and — critically — don't trust any of it fully until you've stood in the actual house with your actual phone. Maps lie by omission. Bars in the driveway don't.

Step 1: Start with the FCC's maps, but treat them as a first pass, not gospel

The FCC National Broadband Map lets you type in a specific address and see which internet providers report offering service there, what technology they use (fiber, cable, fixed wireless, satellite), and their advertised max speeds. It's the closest thing to an official, provider-agnostic source, and it's a good starting point precisely because it isn't trying to sell you anything.

The catch: the map is built from data providers self-report, and it has a documented history of being too optimistic — lawmakers have publicly called it inaccurate, and EFF has written at length about the maps overstating who's actually served. A provider can technically show as "available" at an address because it serves the block or could theoretically run a line there, not because it's actually hooked up and ready for you on move-in day. Use it to build a shortlist of providers to check further, not as a final verdict.

For cell service specifically, the FCC also publishes a mobile coverage map built from carrier-submitted data, with the same self-reporting caveat.

Step 2: Check each carrier's own coverage map for the exact address

Skip the "does this carrier have great coverage in my state" marketing pitch and go straight to the address-level tool on each carrier's own site: Verizon's coverage map, T-Mobile's coverage map, and AT&T's coverage map. These let you drop a pin on the specific address and see projected signal strength for calls, texts, and data — a very different, more useful thing than the generic coverage blob you see on a billboard.

Do this for whichever carrier(s) you and anyone else in the household actually use. If you and your partner are on different networks, check both — one strong bar of AT&T doesn't tell you anything about your Verizon-using partner's coverage for their own work calls.

Step 3: Check ISPs directly, address by address

For internet, the most reliable answer usually comes from going directly to the source: most major ISPs (fiber, cable, or fixed wireless providers in your area) have an address-lookup tool on their own site — AT&T's fiber coverage checker is one example — that will tell you plainly whether service is installed and ready at that address, not just "in the area." Aggregator sites like BroadbandNow can also be a useful quick cross-check across multiple providers at once, though treat them the same way as the FCC map: a starting list to verify, not a final answer. As of this writing (August 2026), the tools in this space have gotten meaningfully better than they were even a couple of years ago, but "available at your address" and "installed and turned on" can still be two different things worth a phone call to confirm.

Step 4: The real test happens at the showing

This is the part people skip, and it's the part that actually matters. During a showing, pull out your phone in the room where you'd actually work — not the front porch, not the kitchen — and look at your bars. If you can get on the home's Wi-Fi (some sellers leave it on, or a listing agent may have a hotspot), run a speed test with an app like Ookla's Speedtest. If you can't, at minimum check your cellular data speed and note how many bars you're getting in the spot where your desk would go.

A few things that tank both cell and internet signal in ways no map will fully capture: hills and valleys, dense tree cover, metal roofing, being at the far edge of a tower's range, and older homes with wiring or construction that blocks signal indoors even when it's fine outside. If you can, revisit at a different time of day — networks get more congested during peak evening hours, which a daytime showing won't show you.

Step 5: Know your fallback options if you're buying rural or exurban

If the address is far enough out that "great coverage" was never really on the table, there are real partial fixes worth knowing about before you rule a place out entirely:

  • Satellite internet, like Starlink, has become a legitimate fallback for rural and exurban buyers where fiber or cable will never reach. It won't match fiber speeds, but it's a real option where the alternative is nothing. Pricing and plan tiers have shifted more than once over the past couple of years, so check current Starlink plans and pricing directly before assuming a number.
  • Cell signal boosters (brands like weBoost and HiBoost) amplify an existing outside signal and rebroadcast it indoors — they can turn "one bar, calls keep dropping" into "usable," but they can't create signal where there's genuinely none outside. Before counting on one, confirm there's at least some usable signal in the yard.

Neither of these should be your primary plan if remote work is non-negotiable for you — but they're worth factoring in before you write off a place, or before you get surprised that you need them after closing.

Bottom line

Do all of this before you're emotionally attached to the house and definitely before you waive any contingencies — a map check takes minutes, and a five-minute stand-in-the-yard phone test at the showing is the cheapest insurance you'll buy all year.

Sources