Look at the building condition and DEFINITELY have it inspected by a RE Inspector, as to condition, etc. 

This tenant isn't doing anything illegal, but she constantly fights with other tenants, is always complaining and verbally abusive, and threatens to sue at the slightest rent increase. 

I liked it for a quick estimate, but I prefer using current listings, that way I can see the condition of the rental compared to mine. 

Increase bids, or broaden targeting. 

I'm interested in ways to increase cashflow to buy more homes faster without making it a full time job.I look forward to learning from this great community!

Below is a breakdown of the financials at purchaseGross Rent (All 4 units rented): $3,200Purchase Price: $372KThrough necessary rehab, and knowledge of the market, I determined I could increase rents, find better tenants, and lower maintenance/my time dealing with issues.I purchased the property through a 203K renovation loan, with 3.5% down, 30-year fixed.

There might be other reasons for an increase as well. 

$2100 sounds about right, your but get of 50k might be a bit tight on 4 units depending on the current conditions.

It's because they are over priced, for their current condition/location/whatever.  

One lease I was under several years ago with some college friends stated that any improvements have to be returned to the original condition or the tenant may be financially responsible if the landlord decides to return it to the original move-in condition.