Then the following year I got a nice house that needed a new roof, siding and some interior repairs from the water that leaked in.

Per my request they sent me a YouTube video (see above) where it’s placing a bracket to hold the filter and disconnecting the cold water faucet hose from the shutoff valve, then installing a water supply line adapter to the cold water faucet hose.

However, you are looking at separate electric and water metering, maybe gas too?

This is one of the main reasons that many people decide to “test the waters” before devoting themselves full time as a new agent.

Have all this done by a handyman3) Third, get water and sewer lines put in and connected (plumber) .

I'd prepare drawings showing dimensions, locate outlets for example electric, water, and gas) drawn in, etc. 

Heat, and Hot water is included in the rent. 

Therefore, if the tenant must pay heat, electric, hot water, cold water, sewer or trash, their rent assistance would be lowered to accommodate the tenant utility payments. 

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.