Buying an Occupied Multifamily?

[Victoria Imlach]

I am looking to buy a triplex in Connecticut (CT) however all three units are currently occupied. The house needs some rehab on the inside and the tenants are currently paying under market (literally $800 for a 4bed 1bath unit market is at least $1000 if not more as is and with a facelift as much as $1500). For this reason I would be looking to terminate the lease of at least one of the tenants up front since I would like to house hack the property, live in one unit while fixing it up and move on to the next two as time goes on. Does anyone have advice for terminating the lease of an already occupied multifamily?