It's a full time job that will prevent you from doing anything else.

Are there typically clauses in mortgage liens that would prevent someone from taking a second mortgage and subsequently selling the property?

Does anyone have any knowledge of zoning /city laws that would prevent me from doing this or would permitting process be relatively easy with a good contractor?

The refinance R is difficult with a VA loan due to the extreme LTV, so do not rely on being able to extract that sweat equity but realize it is there regardless   FHA loans have sustainability requirements for triplex and quads that prevents them from being purchased via FHA loan.  

@Michael Baum Yes, you are correct that regular preventative maintenance is key, as well as having a good local handyman.

This causes the circuit breaker to trip preventing the metal box from becoming energized.

These overlays and updates happen all the time to prevent something from occurring.

The fed moratorium does not prevent you for evicting for possession. 

The only thing that would prevent it would be on the loan side. 

How to prevent that from happening?