@Juan Alvarez
Don't ever be sorry for asking questions. That's why we are all here. We all started in the smae spot you are at right now.
Using the search feature in this group has provided me with some great insight when I haven't understood a phrase. That's always a good place to start. I'm not saying don't ask I'm offering another avenue of research.
Pro-Forma translated to english just means what the property is projected to do. So in this cast if the whole property was rented out and it sold for the asking price it would return 9%. It's a ploy brokers use to get your attention. The only Pro-Forma I ever pay attention to is my own using numbers I came up with from my own knowledge and resources.
Not sure how a tri-plex is at 25% occupancy. There is either one apt rented therefore 33% occupied (1/3=.33) two apts rented (2/3=.66) or three rented in which we would be at 100%.
All bills are paid by the owner sounds like the owner is paying water/sewer/gas/electric/ so essentially the rent includes the utilities. Sometimes in MF you pass off the cost of the utilities to the tenant through either the units being metered for the individual utility gas/water/electric or you implement R.U.B.S (Ratio Utility Billing System) it's a way to charge back the utilities to your clients when the property is master metered (it only has one meter for the entire property).
Every single property in the country has an official survey done to very specifically mark out the property lines. Sometimes the survey is available and the seller will give it to you. In this case it is not and the bank may require one. It's no big deal just a added cost during Due Diligence (DD) but something that should be done as you want to make sure all of your improvements are actually on your property.
Enjoy your journey, it's going to be a good one.
Be Unstoppable