Things like who pays for water, electric, gas and etc are properly accounted for in writing in the lease.

I contacted my property manager with some advice you recommended, such as check her license validity, call her Re/Max affiliation, and  plan to file a complaint, but leave legal action as last resort.

Your comment about a roof repair making a condo non-warrantable doesn’t really seem like a valid reason. 

@Eric VeronicaYou bring up a valid point.

The gas furnace and AC are very old and defunct.

I also pay less for electric, water, sewer, gas and supplies. 

The gas furnace and AC are very old and defunct.

People often assume "money needs to be exchanged" (as you put it) for a contract to be valid, but what's really required is "consideration", or in layperson's terms, something of value. 

We are trying to negotiate a lower purchase price (I'm hoping for $275k) and found out tenants pay for gas and electricity. 

@Nathan G. As