You'll also need that de-leading certificate for when the time eventually comes to sell. 

I’ve got a double at the 290 and Delaware (bannard Ave) and this property flys off the shelf when I put it up for rent.  

Since there is no historical value to start from, do I set a number right away or have a contingency to reset   on the next year since it is a de novo building?

Granted maybe Ohio is just that much cheaper than Wilmington, Delaware...and/or you're planning to do all the work yourself and just have material expenses...but if you've never done the rehab before I would seriously question that $20k number. 

I am a first time poster newbie real estate investor form Delaware. 

if they inherit it'll step up the cost basis and then they can get rid of your life's work and have a party w/ less taxes.or https://www.thebalance.com/delaware-statutory-trust-1798719

Delaware is a small enough state that I actually started calling places in surrounding Maryland/Pennsylvania/New Jersey because everything is so close on the state borders.

I Have a 15 unit condo building that I am looking to purchase in Wilmington, DE.

Periodically, since the update, I have to manually de-capital 8 or 10 characters at times.. no other apps are doing this.

With a four-plex, you probably need someone acting as a de facto PM, even if you're nearby.