I bought my house in 2021, original construction was in 1948. I noticed these cracks in the stairwell to the basement and on the wall directly to the right at the bottom of the stairs, just wondering if this is something be concerned about. There are no other cracks that I can see anywhere else in the house. My main concern is less the long hairline one, and more the one at the corner and the horizontal ones across the lower part of the ceiling. I had a structural engineer come out a year ago...
