I would suggest putting 60 (permit states that amount) and lets see if it gets modified later on when the permit moves towards approval.
The permit is for 60 stalls and 15 cabinets (typically for 4 pedestals of 250 kW) and two transformers.
Looking at the Google satellite view, it seems that there are about 65 parking spots.
Since there should be some double spots for ADA access, the number of 60 stalls seems appropriate.
I was wondering in fact if the small island near the entrance will be keep, as it doesn't seems very practical,
but looking at the possible number of stalls, unless the building get removed, it seems that the small island
will be necessary, however the stalls will certainly be of type pass-through.
The parcel is (115 ft x 305 ft) or 35,100 sqft
The building is (38 ft x 60 ft) or 2,260 sqft
The building was built in 1989 and the two HVAC have been replaced in 2003 and upgraded in 2010 for a cost of $130k.
It seems worthwhile to preserve the building and make a lounge of it.