Semi-annual inspections allow for monitoring of this situation. Cracks and voids should be filled. Filling cracks allows for easy monitoring of movement between inspections. Access hatches should be provided to all crawl space areas. Exposed wooden structural components in the basement should be checked for evidence of rot and insect infestation.
Deterioration usually results in sagging structural components.
Minor movement due to normal settling and shrinkage should be anticipated. Door frames showing significant movement over a six month period are normally indications of more serious problems. Catch basins should be cleaned and tested.