If you wish you may stipulate a occasional visit by a handyman to assess the condition/perform landscaping/ appliance maintenance, and note any noticeable negative changes to the condition, to make sure the property is kept.

I have seen roofing, siding, and roadway "special assessments."

I'm greatly looking forward to speaking more with you about progress and where to start.

Lastly, I would seriously pencil out the financials to assesses if the ROI is strong enough to support the new construction option. 

I developed set days and times for my contractor to provide progress reports.

I am a licensed agent as well and these disclosure do not and should not hinder your progression as a wholesaler.

Also, I would make sure the condo association has strong reserves so you are not hit with a special assessment.

Any progress on this?

He agreed with my assessment and even told me he’d refund my money.A week later, they stopped answering my calls and texts.

I'm pretty sure I can proceed with sending a pay or quit notice and assess the late fee of 10% of the rent, but just need a stupid check.