[Nealtw]

How far to the right does this double joist go. Is the wall bolted down?

 

[Nealtw]

It would appear like it is not load bearing, the double stud, second from the end is the only thing that would make you wonder.

 

[Nealtw]

That double stud is my doing, I wanted to remove that last stud, so I doubled up the one next to it just in case to add support. Lol

There you go, the last stud should always be doubled in any wall.

 

[Nealtw]

I have the same exact situation. The double joist is the load bearing bean - the support beam. I also removed most of that wall - you can see on the picture how far to the left it used to go. To be sure, I suggest simply look at the blueprints. If it is loadbearing then the blueprints will clearly indicate it. View attachment 639667

He has standard stair framing. Are your stairs as steep as they look?

 

[Nealtw]

@Nealtw They are 44 degrees. I never thought of them as very steep, but now since you mentioned it Maybe that's why my dog doesn't go downstairs?

Measure the run and rise, 40 would be pushing it you would like to be around 37*

 

[Nealtw]

Just measured. RIse 8inches, run 10 inches. I know it's 44 degrees because this is the angle I set on my saw when cutting that slanted piece.

7 3/4 max for rise and we usually cut the tread at 10 and put an 11 inch tread on it.

 

[Nealtw]

I guess it is steep, but I never questioned it since I didn't know any better.

Next time look for a stair calculator on line.
I looks like you had room for more but we can't see your head room above.