Sal the Foot's Guide to Mob Wars Property Calculator
On the Jobs page in Mob Wars, mouse over the blue status bar under each job. Hold the cursor there for a moment and it will tell you which card is next, and how many jobs you need to complete to get it.
NOTE: Since Medellin was added and the last Tokyo job became tiered, if you complete every tier of every job in every city from NY to Medellin, you should no longer expect to have any unused cards. These new jobs should give you the two queens we were all missing. Los Angeles should give perfectly matched sets of cards with no leftovers. DC, Rio, Palermo and Amsterdam do not offer cards, instead paying skill points automatically. Feel free to discuss on this thread of my discussion board.
If you are MISSING CARDS, send an email to email@example.com including your id and a note saying you're missing cards. (Specific details as to which cards your missing is not necessary.)