You can't change management companies without their consent etc.

agree with other posters that it could get messy but “Each TIC may transfer or encumber their property interest without the consent of the other TIC”.

You'll probably run into a problem, though, once you do contact the HOA since you don't have the borrower's consent to discuss their account. 

A title search won't give you a balance of outstanding liens, only the lender can do that with the consent of the borrower, otherwise you can only guess assuming payments were made to date, if the note terms are filed.

So from what I gather it is technically possible if the state consents to an exemption for it. 

Lacks the intent to purchase, consider it this way, (just making a point) say I give you nominal consideration and enter into a contract to date your daughter, and your daughter gives her consent agreeing to date me, and you consent as well.

Because the property is owned by my sister I'm reluctant to give out specifics just yet w/o her consent and because I really can't market it myself if not owned by me.

Upon prior written notice to Seller, Buyer's rights and obligations hereunder shall be assignable to any tenant in common investors, joint ventures, affiliate or subsidiary or qualified intermediary without Seller's prior written consent.

They are running a business ourt of the property, subleasing without my consent...

Because of such reliance made, a borrower can not simply "assign" their obligation to that lender without the consent of that lender.