The tenant moved out and left the hose trashed.

Otherwise you will be drinking from a fire hose of information. 

For a tech to do these things, it would have been probably $100 for the truck roll each time, and $50, $50, and $10 for the parts, respectively.Every year or two, I also cut the power to the outside A/C unit and hose out the coils with a garden hose. 

Luckily, I paid off my mortgage about 21 years ago and it is being a charged of interest only at 2.99% which only costs us about $300 a month for a 4 bedroom hose just outside of the city of Dallas. 

Then, after they hook it back up, you do the same thing by opening a hose bib on the house and running it for a minute. 

We just finished up 2 rehabs in Mesa. love the East Valley. drink up BP like water from a fire hose :-)

You need basic steps to get started not a fire-hose of info. 

Read books, listen to podcasts, and "drink through a fire hose" as quickly as you can to get started on the right foot.

Drain Maintenance -  Any time the truck or the bikes get super muddy they go to the coinop carwash for a rinse - I'd rather leave the muddy mess at the carwash instead of in front of my house - I imagine those drains have to be cleared out fairly often.Winter:  Looks like you're in TX, so might not be as big of an issue for you, but during winter here in UT those hoses are constantly running to avoid freezing.

@Ken Nyczaj to save you some further headaches and quickly identify your water leak source, I'd suggest having your builder, or you, get a simple water pump and 50-100 ft garden hose (link: WATER PUMP) which will pull the standing water out of the area, and put a carpet fan (link: LIGHT DUTY or HEAVY DUTY) down there for a few days to dry everything out (especially your wood framing and the insulation) to prevent any further/potential mold growth.