The roommate has been current on his rent and seems like a nice enough guy except for a couple of disturbances to the other tenants in the building with loud music and excessive noise, nowhere enough for me to want to kick him out myself.

If a shift worker comes in a 1 AM and watches TV that may disturb the people next door.

@Erik Drentlaw If the unit is pre-1978, I would not allow the tenant's to mess with anything that could disturb old paint, due to lead-based paint issues.

Hello, I know that this may be more of a legal question, but I am a bit disturbed.

I've driven by the properties but i haven't been able to get on the properties to take a look for myself because they are currently rented out and the owner does not want me to disturb the current tenants. 

Check out Google Earth/Bing/ Google Maps for aerials of the yard and see when the ground was disturb. 

Please DO NOT DISTURB the occupant.

The seller will give more attention to your offer if you have knowledge about the property.Sometimes a seller wants you to make an offer before disturbing the tenants.

I know that many say leave it alone and don't disturb it,  it is ok as long as it is not airborne,  but in this house the HVAC system and duct work is in the attic which concerns me.  

Your loan letter should include their average closing time and the maximum amount you qualified for.Another thing you should do before starting making offers is to have a new office location that is convenient and has a minimal distraction that will disturb your working.