I'm not sure but it is probably the I2012 RC. A guard and a handrail are different requirements but they can sometimes serve the same purpose. R311.7.8 requires a handrail for 4 or more risers. R312.1.1 requires a 36" high "guard" at a walking surface more than 30" above grade. At the stairs a handrail can serve as the guard if it is between 34" and 38" above the nosing of the treads.

Hi what color should I stain this basement staircase handrail? I have “golden oak” through the rest of my home but she’s nice this is a basement, I wanted to go slightly darker in stain. Advice on a min wax stain? Stairs will be grey carpet and newel post painted white.

The post I mentioned would not be at the bottom tread so the design of a continuous handrail would have to bypass the post to get to a newel at the bottom tread and there would need to be a guard at the new opening whether it be solid, balusters, etc. At first glance it seems a potentially messy solution. Perhaps the handrail could be at the other side and the guard could terminate at the post. The bottom tread should have had returns at each side. Its looks like a abasement stair in the entryway.

I understand that OP needs it to be cheap until closing because this is a lender requirement (not unusual) and if it is fixed before closing, it becomes a fixture and stays with the property even if the buyer doesn't close. CONSIDER: A solution to this would be a rehab type loan rather than the typical purchase loan. Benefit to the buyer is they don't need to resort to expensive hard money type loan as mentioned up thread. Also it gives the buyer the TIME to figure out a permanent solution. The buyer can close right away on a rehab loan. The disadvantage to a rehab loan is that the interest rate is slightly higher than your typical purchase mortgage. Something to explore.