SoCal contractor who installs separate meters in each apartment?

[Richard Kolostian]

My mother has a 4-unit building in SoCal. She pays the water and electricity, and there is only one meter for each of those utilities in the building. I'd like to have separate meters installed for each unit, to track usage, and to "uninclude" (for lack of a better word) utilities for a new tenant in the future. Is there a contractor in SoCal who can install separate water and electricity meters for each of the 4 units?

Any information and/or contacts would be most appreciated. Thanks in advance.