Well, story time. Because I went through this process. I purchased a condo in a building that Comcast (A cable internet ISP) claimed to service. I even called

Well, story time. Because I went through this process. I purchased a condo in a building that Comcast (A cable internet ISP) claimed to service. I even called ahead before putting an offer on the unit to verify I'd have them as an option, since they were the only high speed internet option available besides slow DSL or 4G. Sure enough, Comcast told me they service that address. Fast forward to near the move-in date, I call Comcast to transfer my service to this location. They tell me sorry, we can't do that, we don't service this address. I tell them this is impossible, because not only am I on your coverage map, but I called a month ago and you told me you service it. They said sorry, nothing they could do, and that I should try Comcast business or pay something like $4000 for a build-out. Well, I was desperate and called Comcast business to see if I could get a business line in my very residential condo. Weirdly, they allowed it. But I had to pay $200 for a setup fee and then roughly $100/month for what was basically 50mbps internet, locked in a 2 year contract. I had no choice, so I ate the cost - which looked much better than the $4000 option. But then Comcast said "Hey, we want to install a distribution box in your building, can we do that?" and I had to wrangle with the condo board to get that thing installed. About 3 months later I finally had Comcast internet, locked into an expensive contract. But because Comcast had installed a distribution box in the building, at least my neighbors could now actually get the service Comcast claimed they offered on the map (even for regular home internet). After 2 years my contract was up and I was able to switch to residential internet at a lower rate. I suspect if this was a SFH rather than a single unit in a 28-unit condo building I'd be screwed and have to shell out the $4K.