I doubt the wall between the living and dining area is structural.
It appears you have a one-story (in that area) living space with roof trusses spanning 26’ from front to back of your house indicating no load don that wall.
Things to consider:
- I’d go down in the basement below that wall and see if there is any posts coming down through the wall above, (you have a loft area so it’s not clear if the roof changes in that area),
- verify that the ceilings in the living room and dining room match in height and texture (or can be modified adequately),
- verify that there isn’t any plywood on the wall. If there is it could indicate that it’s a shear wall. Do you live in a high wind area or seismically active area? (I would suspect the other wall by the bedrooms would be a shear wall, if any.
- verify that no heating ducts are in the wall. (If no registers, then I doubt there are any hidden in the wall.) I’d check by looking in the attic and basement.
- There are no plumbing fixtures on the wall so I doubt there are any plumbing vents, etc. in the wall.
- The dashed line directly below the words “Future Pantry” bothers me. It could indicate an electrical line, but it’s drawn perfectly straight, which usually indicates a wood furring space. If so, make sure no heating ducts are in it and it is not hiding a beam. (Make a small hole and look in over by the Pantry.)
Don’t forget you’ll need to patch the ceiling and floor where the wall is removed, so you’ll have that expense too.