I always check at least once a year:(1) Smoke alarms(2) Fire extinguishers(3) Roof (usually just send someone in to the attic)(4) Windows and doors for leaks;(5) Underneath sinks for leaks (in case you haven't notice I'm terrified of water)(6) Exposed wiring of any kind(7) Any type of repair that needs fixing (I just give my handy man free reign)(8) HVAC (separate HVAC guy comes through and inspects and services)(9) If there's something unique to the house (e.g. railing), I have him check to make sure it's safe and secure.

The are so many types of soil and so many types of stabilization.

Hi, RyanDo you happen know a qualified soil eng in Klamath Falls,OR ? 

EPA, storm pond, 2 acres doesn't seem like much to put 6 duplexes on-  parking, driveways, setbacks, landscaping, fences, soil test, fire hydrants, survey, etc. 

It looks like they excavated some soil and did some subsequent follow-up testing.

I do not know the exact rules because I secure all trenches but - and this also depends on the soil - the looser the soil the more shallow you need "shoring" If it's more than a 3-4' deep take care and slope the sides- the deeper you get you need to secure the sides.

Also, has anyone done grading before of the soil around the house?

"Moisture and dirt are entering the basement near the stairwell""Additional support columns/beams lack visible hardward securing them into place"Engineer noted there is no structural component dug below freezing level on any of these supports which would need to be done to get the foundation supports to code"Signs of water penetration noted on the basement walls"Picture showing proximity of nextdoor house"The soil slopes towards the foundation, or is flat, and must be corrected to prevent water from finding its way to the foundation" (This is the side of the house with the failing retention wall in the basement and has extremely limited access) The engineer recommended potentially just paving cement between the houses to seal it and recommended against a french drain as installing it would go below the level of the foundation already.  

Is your soil the type that tends to "Settle" after the line is in, requiring a re-dig and an adjustment to get rid of bellies in the line, or is it considered stable.Are you allowed to oversize the line a little for a small upcharge?

Soil samples and tests?