Can a single Navien Combi-heater handle a 3-family home?

[Jabran Sadiq]

Hello, I’m looking to purchase my first property. It’s a 2-family plus a bonus apartment on the ground floor in New Jersey. It has 3 kitchens and 3 bathrooms. Will a single Navien Combi-boiler for heat and hot water be enough for all 3 unit? I’m hesitant as I feel I may have to update the plumbing for the entire house and install 2 more boilers to comfortably accommodate 3 kitchens and 3 bathrooms. Anyone have any advice on this? Thank you!