The bathroom and kitchen were replaced.

If you’re not paying cash for properties, get pre-approved for an investor loan to understand your available credit.Time FrameThe shorter your timeline to achieve your goal, the more upfront capital and credit you’ll need.End GoalMost investing goals focus on replacing their current income, like $5,000/Mo.

Really nothing can replace real life connections! 

I had to replace doors, carpets, repaint.

One thought was to replace to large commercial tenant with a company that had a similar profile.

It usually doesn't cover for full replacement of your property.

You technically do not have to replace the mortgage. 

If the sale is for $600K then you need to purchase $600K of replacement investment real estate. 

The solar system adds no value to my property for rental purposes, and I may even be ripping up the roof & replacing it in the new year.Beyond sending a nasty letter through my attorney via certified mail, demanding the company come pick up their equipment, am I required to take any further action or fulfill any obligations regarding these contracts?

Not sure how they could block a sale but I imagine they told him the central heating unit for the whole complex would soon need replacement so a special assessment would be upcoming.