You need to know what to expect for YOUR units.To determine that, research available units in your target area.

You then can utilize that amount for purposes of determining the depreciable amount for the building.You then depreciate this over 27.5 years beginning when it is "placed in service".

I searched the house online for some basic information, but was wondering if anyone could give me some suggestions of what financial specifics I should request from her in order to determine if the property is worth looking into further.

If I get more info on your lot, I may be able to determine if it would support units on its own, or if it would need to be adjoined to others to make any development worthwhile.

Perhaps you should start with determining which type of property you are looking to acquire.

A couple questions for everyone on building good pro forma analysis before I get in touch with a seller.1) How do you determine a vacancy factor for a 3-4 unit property?

There are various ways to do this, as others have pointed out, and I recommend you use a few different methods to determine a reasonable rent.

Go to your bank and determine a plan tailored to your needs.

I just saw this on the internet...

As Bill Gulley said, as a listing agent I don't accept these "loan preapproval" letters that guys get off the interent from some supposed internet "private money lender".