What The Texas Board of Professional Engineers Says About Elevation Measurements
The Texas Board of Professional Engineers recognizes three levels of foundation performance evaluation: Level One, Level Two, & Level Three. Here is a brief explanation of each level.
Level 1: This is a visual inspection. There are no elevation measurements of any kind.
Level 2: This is a Level One evaluation that includes elevation measurements. The elevation measurements should be sufficient to identify the dominant distortion mode.
Level 3: This is a Level 2 investigation that includes materials testing. I have never heard of a Level 3 investigation being used in a real estate transaction.