[wizerdrobe]

What style of multifamily are you referring to here? Every townhome and apartment style I’ve ever lived in has discrete electrical, plumbing, and HVAC.

I’ve only rarely seen condo styles with shared systems and those typically come with unappealing expensive management fees, insurance, and shared expense to the tune 500+ per month on top of the price for the unit itself. My father used to mantain the infrastructure for such a development and those were prices circa 2000 or so.

[woodruffw]

I’ve seen modern townhomes and apartments in Maryland with shared electrical and HVAC; not sure about plumbing. I’ve also seen constructions in North Carolina with shared electrical and plumbing, although each unit had its own HVAC.

(I don’t have a sense of expense for any of these things, but I assume they wouldn’t build them this way if there wasn’t some economic envelope that they fit into.)