Being that nearly all the projects I deal with are Non-Residential, my reply is likely to be irrelevent - but this won't stop me!
Certificate of Occupance will not be issued until finals for Electrical, Plumbing, HVAC and Fire/Life/Safety have been issued.
To me, this sounds like a Public Safety thing more than a Bank issue - especially since a great majority of the projects were of just that - Banks! (Branches, Mains, Loan Centers, REOs, etc.).
We get "TCOs" (Temporary Certificate of Occupancy) at times, in order to get the Service Release / PoCo sets Meter and energize service, along with other Utilities activation.
The TCO is done for Final Commissioning of the project, while the overall work in the remaining trades may be ± 90% complete.
For TCO, the F/L/S equipment must be operable - and Division 5 permit (for monitoring) must be obtained. If testing results are OK, and sprinklers also pass, then the F/L/S part is happy for TCO.
Electrical needs to be at least 90% complete - and if any stubs are unconnected, they must be safed off.
Kind of detailed for what goes into TCO, but it's almost as much involved as with a normal CO.
TCO also allows the Tenant / Client to bring in their stuff + set up the place, and allows for us to "Train The Client" on the installed systems / equipment.
The Client may not conduct business with the Public (general public may not "walk-in" or be on site) during the TCO.
Not having very much Residential experience in these matters, I wonder myself how the CO is issued in California per Residential (1 Family Dwellings).
I would imagine the CO is similar for Multi Family Dwellings here, as is with Commercial/Industrial projects.
Scott35