It's not that much $$$, but it will give you great insights into the health and condition of your drain lines - if you needed to replace your lines (either under a concrete slab or pier/beam foundation), it will take a good amount of money to get them repaired.

There is a support beam needed under the enclosed porch which has been approved for interior living space.

Second story beam at the stair is sagging / deflecting.

Once they made me hire an engineer because a support beam had chipped paint.  

Put in a new support wall outside, new roof, fixed walk around porch, new HVAC system, 2 new bathrooms done in the historic style in one and not in the other, new water line,  new floors, fixed wall that was fallen 6 inches from second story to foundation, replaced termite damaged foundation beams, paint and cosmetic stuff, all new plumbing, lots more.

I have 2 two story properties adjacent to each other that are currently vacant and uninhabitable, the roof is collapsing and the wooden beams are rotting etc.

This is a pier and beam house that's going to need leveling, drywall work and the bathroom needs some help too.

Supportive beams would be a bonus but not completely necessary because we already own free standing aerial rigs.

In other words, pretty certain the foundation work wasn't up to spec.I spoke with the foundation company that did the work today and they told me they wouldn't honor the warranty unless the inspection said it was one of their beams that failed.

Where I live, lifting a pier and beam 1200 sq ft SFR and replacing its foundation runs around $30k-$40k minimum.