If you give an inch many tenants will take a mile and it becomes very difficult to enforce the lease.

Upon arrival we found at least 4 inches of water throughout the basement.

Instead of using foil duct tape, he sprayed "Great Stuff" foam INSIDE of the 8 inch in diameter active vent/pipe.

If it more than say a 1/4 inch, it is time to call a foundation expert to take a look.  

And yes prices are inching higher.

So I'm considering these different electric options:1) cadet wall heaters with built-in fan2) plug-in panels (VonHaus 450W Wall Mounted Electric Flat Panel Heater - Paintable Slimline Low Energy Eco Ceramic Space Heater (23.5 x 23.5 x 0.4 inches) https://www.amazon.com/dp/B01LZ3NE3E/ref=cm_sw_r_cp_api_H0Q1ybQHE3DNG)3) convection heater (http://m.homedepot.com/p/Stiebel-Eltron-1000-Watt-120-Volt-Wall-Mounted-Convection-Heater-CNS-100-1-E/206160725)So I'm wondering if you have experience with any of these models or styles.

“Fill and wait” is when you bring in however many inches of appropriate topsoil to basically build your own leach fields for septic.

That worked well too, I still got 2 pieces 2 ft by 6 1/2 ft.This is the rack that got them home and was also used to initially to get everything cut to rough size for easier handling so it could be removed safelyAfter all the 25 inch rips with splashes where cut, there was one piece left to handle on the cradle which was laid over as a table to cut the island top.

I would try the nets and have someone seal up the place as they (what I have heard) can enter a space under a quarter of an inch wide.

However comparable houses are about 380 - 400 K.The week of the closing the sump pump failed and the basement is now completely covered in 2-3 inches of water.The basement is unfinished, concrete and tiled.