Last couple pix are of the flooring we'll be putting in, tile in both bathrooms and laundry room, wood laminate everywhere else. 

The typical solution is called "Drain Tile." 

NEW kitchen with NEW white Shaker cabinets AND quartz countertops, NEW wood laminate flooring, UPDATED bathrooms with NEW matching white Shaker cabinets, NEW plumbing, NEW bathtub, shower and tiled floors, All NEW drywall, NEW electrical panel, NEW electrical wiring, NEW siding, NEW windows, NEW roof, FRESH landscaping front side and back. ...

The home features a large open floor plan with a modern fireplace in the formal living area which is tiled from floor to ceiling.

What are your thoughts on the fracture lines in the kitchen tile?

Services include: - Ceramic Tile- Hardwood- Laminate- Custom Showers- Backsplashes - Fireplaces- Schluter-Ditra Heated Floors- Vinyl (LVP & VCT) - Carpet & Carpet Tiles

Quite nicely finished on the inside from previous owner w/ tile floors, quartz countertops and stainless appliances.I am wondering if anyone has some estimates for how much an engineering study on this would cost, and what I could expect to save, given the purchase price?

There’s a level of trust in our supplier-contractor relationship, which I see as another layer of insulation in making a deal work with terms between him and I.

You should be able to go to your local lumber supplier and tell them you need framing lumber and they will set you up. 

For example, tile and laminate flooring.