Based on what you've described, this sounds like moisture on the surface of the wall, which would be caused by excess moisture in those areas from the Tenant not ventilating the bathroom while showering or cooking with a lot of steam in the kitchen area.A contractor can put a moisture meter in the sheet rock and quickly tell if there is any moisture inside.

All three of these deals have come from wholesalers, but those leads from them are now drying up.

You can keep the excess and apply it towards next month's rent, but you should not keep it as if it applies toward this month's rent.$1,000 below market?

Having a pest inspection done is helpful as well because it notes the areas of dry rot, fungus, termite damage, water damage, etc. and give you actual bids on how much it would cost to repair.(6) is not a major repair, as Greg mentioned.For (2), (3), (5) -- any foundational notes like these I would agree to consult with a structural engineer or expert, as it likely suggests in the home inspection.

Forced air heat dries out the air and isn't as consistent.

The questions will be pretty cut and dry. 

The sun helps the drainfield dry up and if you're putting things over it, it can cause it to stay wet and not longer absorb water.

-All decisions on the property (renovations, sales, tenets, etc.) would be made together-Their rent would increase a bit, with the excess going towards paying me back for their half the down payment.

So with the rates jumping up like they are, now the refinance market is drying up because everybody that is going to refinance their properties at lower rates pretty much already done that by now.

Who is entitled to the excess $19,000?