The problem is at some point the duplex was split and is separately owned.

Their website says it is a separate transaction.

Cleaning is a sore spot because as Jon says, most form leases say "broom clean" and unless you have a separate cleaning/turnover fee in your lease, you don't get to charge them anything more.  

With two years I could do all the work myself making the separate entrance and all the work needed. 

The problem here is I will need to use a property manager, thus reducing my monthly profit.I'm interested in the FHA route, but it seems tricky since I'm unmarried but not planning to live separate from my boyfriend full-time.

You will have to check on all that is involved for separating out.

This will be for lead generating and I will have completely separate domains for other parts of the business.  

The listing says the utilities are all separate.  

@William Ellis , I think you are looking at this correctly.I think it is very smart to still budget for management because if you are going to be doing the management, you should be paid for that separately from how you are paid as the investor.If you are planning to hold for just a few years, you are probably correct your take home cashflow will be higher, but if you're planning to hold for the long term, that extra cash flow should probably be going into a future capex fund so you don't get blindsided when all those things need to be replaced at the same time.

Each unit is metered separately.