Foundation issue that needs advice!

[Han Lai]

Hi everyone, 

I just did the inspection for a house and there is some issue with foundation. The house has previous foundation repairs in 2012, but still has uneven floor now.  

Inspection report says: 

"Using the Smart leveler digital leveling system with the center of the living room as the reference point the inspector observed the following:

1) 1" inch drop from the center of the living room to the back corner of the primary bedroom
2) 1" inch drop from the center of the living room to the center of the primary bathroom.
3) 3/4" inch drop from the center of the living room to the pantry.
4) 1" inch difference from the center of the living room to the back corner of the living room."

The foundation repair company that did the work previously can only come to check next week. So I would like to see if anyone here can provide some insights on the issue. Is it something I need to worry about? Or is it normal? 

BTW, this house is located in Houston, and was built in 1984. 

Thank you so much for your kind advice!