It's a great way to test the waters and see if RE investing is something you want to do more of in the future. 

You can tell what zone you are in by searching your address here. https://msc.fema.gov/portal/search The City of San Antonio looks like they allow for certain construction in the floodplain as long as it does not raise the water surface more than 6 inches,but the "no rise" applies to the floodway.

Other items are specific to each vehicle such as water clean out,Tire/window shades, etc.Quick non Parking list:Wheel/tire covers; Vehicle cover.Remove and store your tires.Store with a full fuel tank to prevent condensationAdd fuel stabilizersPlace RV completely off the ground to prevent flat spots on yourtires, if left for a long time.Cover your HVAC, skylights, vents and windows to prevent exposure tosun and breakdown.Boats leave your plug out, whether covered or not.

As a licensed agent I posted one off-market listing on Ci to test the waters and did get a few sniffers but no bites. 

Is there a managing company on green renewable energy on cheap/free land or water, selling electricity per kWh and selling carbon credits, leveraging preferential rate financing and tax reduction for green energy ? 

I also once got a credit for a house with a flooded basement with water damaged water heater and HVAC.

We've replaced 5 water heaters in a single year, had plumbing stoppages that resulted in 3-5k worth of work, and even had to replace 1/3 of the pier and beam foundation in the house we're currently living in.

The water bills are a big cost to me.

SE Michigan (House on Zillow says it's worth $348k it's a 3br, 2 1/2 ba), semi finished basement.My house currently needs a new roof, new water heater.

I would like to know what my options are to make sure tenants in a duplex are actually paying their water bills.