The property consists of 4 structures - 2 duplexes, an SFR and 2 car garage, and has 3/4 of acre.Here is the link to my analysis using the BP calc assuming a $455,000 purchase price and below is quick summary.https://www.biggerpockets.com/calculators/shared/260799/874435c9-b77f-4f96-a3de-90be11c4cbbaThe asking price is $475,000, Assumed purchase $455,000.I've assumed $30,000 in repairs as a place holder (TBD)Current Rents total - $4,700 + an additional $75 in income from laundry machines _ According to listing broker.Taxes are $5,868 (verified)Insurance $4,500When factoring in other expenses - landscape maintenance, water, elec, vacancy, repairs, cap ex and PM I end up with $610 in cash flow.

We have been looking at a few duplex properties, which are going quickly in the area.Here is the issue we are facing...

Lastly, if I want to become "B" in the scenario as an investor, what are some of the techniques used to find "A" seller and "C" buyers quickly and promptly, in order to arrange the transaction?

Well, he was able to find a tenant pretty quickly within 2 weeks after we moved out (we also continued paying rent since this overlapped a month beginning). 

The calculator would be very complicated very quickly trying to account for depreciation. 

I have a pretty good system of letting interested applicants that I've had a quick phone screen with use a lockbox to take a peek at the home to make sure it fits their needs, and I then email them an application. 

Han Oh yeah definitely you are right especially these days .Did a quick search on Redfin and small homes look to start at $120k now on MLS.Which is still much cheaper than LA or OC countries .. but still .

Thanks for the quick reply!

It depends on how quickly you can re-rent.

He did a quick evaluation of what a park is worth by considering a 40% expense rate and a 12% cap yielding an offer price of $135,000 (27,000 lot rent only *.6/.12)Any thoughts?