I also re-sloped the land around the non-concrete parts of the property and put in a French drain.

Quads on a septic system is going to be a major expense and you should expect to pump it out every 2 years or so, so it needs a man hole cover.If it is going to be septic be SURE you have sufficient soil quality for your drain field, you will want lots of sand.

This will put all their efforts down the drain. 

As of the date of this Agreement, Landlord warrants that the Property sewage drains are in good working order and that they will accept the normal household waste for which they were designed.

@JD Martin Does this sound like a possible draining/siphoning/cracked shower trap to you as well?

Water drains?

Each month, we are draining our reserves and we have about a little over 3 months left of reserve money. 

We asked for a reduction in sale price for an AC not working and a clogged cleanout drain (concrete/construction debris fell in?).

Water would hit the window and run down to the track and drain to the inside of the building instead of to the outside. 

Someone in foreclosure rather destroy the cabinets, pour concrete down the drain, rather destroy their OWN loved house than sell to you AT MARKET VALUE, let alone at a discount.Again, the standard average out there is that you need to send 3000 mailers, calls or texts to get 2 contracts signed IF LUCKY.