Yes we have the funds to purchase the property cash with no contingencies - but may need a construction loan for the renovation.The problem is there are no accurate comps, as everything else on the market is out of date or not similar to this property.

For example, a strong case can be made to charge a leasing fee along with the monthly management fee, (typically lower):This structure more accurately reflects the work load on a rental property: taking new marketing photos, writing and syndicating marketing ads, scheduling/performing showings, tenant screening, acceptance of deposits walk-throughs etc.

Either way, if they're not willing to provide rental figures, you could get a written figure from them and make your offer contingent upon that figure being accurate contingent on leases being provided prior to your inspection window. 

Plus there are a lot of global mashup sites like zillow that pull info from a lot of sources and can be a useful tool sometimes albeit less accurate in my opinion.

County wide numbers are not going to be accurate due to the fact that there are such differences between the towns...ie, you're going to find higher cap rate in East Orange than you would in Montclair due to risk.

I wrote this article a couple years ago, so not positive how accurate it still is (haven't reread it), but it will give some info as to what my thoughts back then were about it in more detail.https://www.biggerpockets.com/renewsblog/2013/09/2...But other than that, in short...I don't feel confident yet in the upward movement of Detroit yet.

The article is mostly accurate, but a little misleading.  

I am seeking 2 things in particular: help about how to get correct and accurate information about different parts of the business and how to get started at my age, and also I am hoping that through communicating with you all I may be blessed enough to meet some amazing and intelligent people who can guide me in the right direction through my real estate journey.

I would like to include this expense in my flip calculator as accurately as possible so as to not underestimate this potential problem.

The danger of posting in a public forum is that you will get lots of opinions but not always informed, accurate and useful responses.I agree with @Jay Hinrichs.The primary issue at hand is that you need a seller who has capacity, power and authority to pass marketable title to you.