Locate sewer, old septic tanks,  and water lines.  4.  

:)As for LTR rental terms, usually we sign a 1 year lease where tenants are expected to pay Electric and Gas if applicable, while the owner typically pays water/sewer/trash with the city. 

I'm new to the real estate investment game and I'm a bit nervous about dipping my toes into unknown waters. 

Your question about hydrostatic pressure is getting into the weeds for sure...I would ask myself, does the potential water infiltration have the possibility to damage the unit and tenant property?  

You must maintain a unit as a primary residence - that keeps a lot of pure investors from completing an SB9.3.

The buyers did a long inspection, multiple days... made a huge request for concessions based on what we knew to be purely made-up issues.

Otherwise, you may need to replace a water service (13-15k), electrical service (10-15k) and upgrade wiring (This is a tough one, but maybe an additional 8-15k inside).

He used to troll these waters for suckers very hard until I found out that his claimed experience and transaction history was fake.

I used to live in the city and the taxes and water bills are nightmares.

When it was clear water was running from the unit.