A 4200sqft 4 level house, in assuming Ontario as that's what your location is set as, should be relatively newly built? I'm surprised there's no cabling.
Are there telephone jacks in rooms instead if it's an older place? Sometimes in the past telephone jacks (RJ11) were terminated but it was CAT5+ cabling behind, so it's easy enough to convert it to RJ45 jacks.
If you want to do heavy file transfers over WiFi, then I'd strongly recommend hiring an electrician to run CAT6 cabling to each floor so you can install wired access points on each level, terminating back at the router. You can also do this yourself if you are handy and don't mind opening up some holes in walls and such.
Otherwise, as others have said, a high-quality mesh system should do fine for usual streaming/browsing. You'll likely want a node on each floor, with the main base unit being as central/middle as possible.
Are there telephone jacks in rooms instead if it's an older place? Sometimes in the past telephone jacks (RJ11) were terminated but it was CAT5+ cabling behind, so it's easy enough to convert it to RJ45 jacks.
If you want to do heavy file transfers over WiFi, then I'd strongly recommend hiring an electrician to run CAT6 cabling to each floor so you can install wired access points on each level, terminating back at the router. You can also do this yourself if you are handy and don't mind opening up some holes in walls and such.
Otherwise, as others have said, a high-quality mesh system should do fine for usual streaming/browsing. You'll likely want a node on each floor, with the main base unit being as central/middle as possible.
