I am currently selling a 16-unit apartment complex, the first one to sell since 1998 when this buyer bought this one!

Selling now prioritizes liquidity and growth opportunities, while holding benefits from long-term appreciation and rental income.This post does not create a CPA-Client relationship.

Should I be looking for selling all or a portion of the note? 

It sounds like you've absorbed a bunch of problems already and a new sewer line and the current basement situation will cost you way less than the $50K in fees to sell it. 

I'm willing to sell the other at cost. 

A 1031 exchange will allow you to sell your building and use the proceeds to invest in a small multi family and/or medium term rentals.

BP has built a great selection, all of them worth reading and that will help you build foundational knowledge.To answer this one: the words from old school investor Dolf De Roos "seldom sell" and you will find a lot of post on BP from people who regret selling properties in the past.

You can't sell your account.You can only sell SFR properties based on comps not rental income.

To reduce taxes, offset gains with selling expenses (e.g., commissions, fees) and consider a 1031 exchange to defer gains by reinvesting in another property.This post does not create a CPA-Client relationship.

Would you mind sharing your professional opinion on which of these kitchen designs would sell better?