And for sure on much bigger scale when I have flipped plats to national builders you can bet they are just waiting for us to not close.. and will swoop in.. its just part of the game.. win some lose some.. 

So this varies from state to state and sometimes by county, but I know here in Ga where all my portfolio is located, there is no set limit on the amount you can increase the rents by.

With only an acre for parking and building, your probably either limited to a single tenant or low volume garden offices (maybe a small retail strip center, but the sizes would probably dictate shorter leases and higher turnover).

I bet it's worth having a chat with Ceasar as the Bronx is his market. 

Your best bet is to make a couple friends in the lending world.

I think your best bet is to find and network with other student rental owners in the same student market. 

Once my properties are stabilized this way, I begin to look at additional ways I can improve my property or limit my costs in order to increase revenue.

To a lender, they will both be considered commercial (if the 4+2 are one deed) which will restrict you to commercial mortgages, and the limitations that come with them.From a depreciation standpoint they may both be considered residential depreciating over 27.5 years as opposed to 39.

The other 3/4ths of the property is an investment property and I'll bet they've been declaring rent and depreciating and writing off expenses on it for their period of ownership.

Commissions are negotiated and can be more or less depending on your office policy.Or, again with your managing broker's permission, tell the seller you know several investors that might be interested and get a listing... maybe a limited listing instead of a contract to buy it yourself... maybe as a transaction broker so you're just helping the buyer and seller consummate the sale (not representing either party as a fiduciary) and charge a commission instead of a wholesale fee.Just spit-balling ideas for you, but check with your managing broker to structure something that does work for all of you.