Everyone's idea of large is subjective, but for reference, my home is 1250 Sq. Ft each on the main floor and basement. Upstairs is 950. My devices just happen to be in adjacent rooms, more or less. Although I do have some in my detached shop. Zigbee devices worked with almost no planning or effort. Zwave needed some well placed repeaters.
https://community.hubitat.com/t/moving-new-house-has-detached-shop-signal-range/77497/20?u=dylan.c
