I have quite a bit of equity in a couple of properties and have been debating my next steps.  

I did shoot you a DM of a couple I think could help you that isn't listed above.

Now, some of these answers will depend on what state that property is in, how much equity you have, and a couple of other factors...but you can certainly seek out other lenders about a Line of Credit on an investment property.  

A couple million dollar apartment building, office space, etc...

I would walk the property with a couple of GC's and let them give me an idea. 

There might be a couple of exceptions I can think of in DFW area. 

This is helpful and I'll need to do more research into a couple more firms to reduce the costs.

New construction is up, a couple luxury neighborhoods (500k+) and a couple new mid sized apartment complexes (1000+ f/ 1 bedroom).

You could/should offer a small non-refundable EMD, say $5k if that’s equal to a couple month’s rent.

Add a couple of chargers, no problem.