If I did, how precise would that number have to be?  

@Donivan Norton this is precisely what Hard Money Lenders are used for.  

What I'm hoping for is some thoughts on precisely how YOU handle these style of investments in Personal Capital, if you do.Ideas?

Just wanted to add I am here in DFW (dallas) if there is anyone local that has a more precise answer for me.

That is precisely how the building would be depreciated.For say a stove put in the rental portion, you will depreciate it as 100% business use.

@Jeremy PaceOh, you're saying I could find another tenant/buyer, and collect another down payment.That's precisely why sandwich lease options became illegal in Texas.

This is almost precisely what I have heard from multiple investors.

Investing involves managing risk to an absolute minimum, calculating it precisely and NEVER risking your personal assets.  

You know precisely what your buyer is looking for, what their profit/cash flow thresholds are, and you can go find that deal.  

Previously, the office was used as a doctors office and then as an mini suite, precisely what I would like to do.Other advantages (to me) include no Condo Association or CAM fees.I'm thinking I would like to play at a level below a typical Executive Suite such as Regus.