It really depends on your local market...and the job.I manage an office building that had a nearly 10' X 10' window catch a flying metal chair back in December.

I am a partner with cousins, this is an inherited property.I have a decent handle on the property value.How do I incorporate the value of rental income into the selling price?

Adalanto, CA is a prime example, but it is a separately incorporated city which set up an area specifically for this.  

I guess she told the bank that they were willing to let the house go into foreclosure, but had an investor, me, willing to assume the loan, which the bank was fine with and even agreed to discount the property (not sure how much), since many of the doors and walls are torn up for her wheel chair.

Hoarder extreme ( which is my specialty )  people are in chairs on the porch clue that house stinks bad..

They don't have an app for iOS or Android yet but, I know that they're working on it.I love that it's free but, if they did charge a small fee (emphasizing small) I'd still use it and incorporate the extra cost into the rent.

Owner occupant loans have ways of including/incorporating that "boarder income," but alas investment property loans do not.

Rocco Esposito of Esposito Insurance,  in Nutley is closer to you than I am in South Jersey, Rocco is a business affiliate of SJREIA like me and chairs at least one of the subgroups up your way (unlike me)Disclaimer: Rocco is not related to me and I receive no commission or referral fee.

It's the Chicago way, like when they put chairs when it snows. 

I can email you an APOD/proforma spreadsheet that I use that incorporates CapEx, and all other expenses including property management and vacancy etc., debt service, and tax deductions, and gives you the COCR, cap rate (which I know isn't supposed to apply to duplexes but I like to know it for comparison's sake), and net annual income, along with projected appreciation value at different rates over time.Right now, I personally like to see at least 12% COC and a cap rate over 7, after rehab.