If for some reason this proves to be a minor issue after all, then try using Drylock masonry waterproofer on the basement walls.

The main pic that worries me is the last one looking at the vertical crack in the masonry.

I'm assuming your market is Texas, and you guys have completely different foundation issues there (because of all the 70s Slab construction) than we do here in the Northeast (which is mainly 100+ year old stone/brick/masonry on partial to full basements.)Your best bet is to develop a great relationship with a mason in your area, who specializes in the type of work you're looking to do.

General Contractors, Electrical, Plumbing, Carpentry, Masonry, Painting

I also need some masonry work to rebuild one of the back porches and re-attach the support column.  

The reason is we will be doing the masonry work by our-self, so will be able to save a lot on the cost.  

.…$6,060.00Paint Exterior Foundation Masonry Block WallsScrape all loose and flaking paint and pressure wash block.

Saved a ton ( especially on flooring ) doing it ourselves, but did need to lean on a GC for some Deck and Masonry work. 

The age of the property was my next question, thanks.I'm going to assume in the first of many assumptions that, with the heating problem you're discussing, this is a framed structure and not full masonry construction.The wiring of the structure was most likely originally knob-and-tube.

Before you move, I would cut back any encroaching trees, repair any masonry or concrete, and do any preventive maintenance on the septic or sewer system.