Install new shower faucet & drain for shower with labor $600 - electrical work, new vanity, toilet faucet, plaster walls, paint, tile shower stall and floor, paint, new window and on and on.

It is best if the window well has a drain to the drain tile on the property.

Do you check every drain, including floor drains for proper drainage.

It's not that much $$$, but it will give you great insights into the health and condition of your drain lines - if you needed to replace your lines (either under a concrete slab or pier/beam foundation), it will take a good amount of money to get them repaired.

Not a big deal, except then all the water drained out and our guests couldn't use the hot tub overlooking the river, which is a huge selling point.

Pex was a savior for water lines but the cast iron waste stack & drains as well as the cast iron vents required walls to be entered to be replaced &/or hooked up with PVC,As each apartment vacated I would upgrade before the next tenant(s) moved in.

If they've paid little of their loan down, if they bought the house for too much in the first place and now need to sell, or if they took out a HELOC and drained their equity, you're going to have to pay near market rates to cover what is owed and most investors aren't looking for that.

Some wouldn't go in an attic, wouldn't go on a roof, wouldn't test every drain or open every window.

The city is very flexible.Install french drains or some type of drainage system to slope the water away. 

So for hours water rained down, damaging the living room ceiling, carpet / padding - and drained down to the basement, damaging the drop ceiling tiles, insulation and more carpet / padding.