Great spot for a large plant.

Not every space needs to be filled. Anything you place here runs the risk of looking shoved in the corner, even a plant. Live with it for a while as empty space after your project is completed. You may appreciate it just as is.

Agree with Jenn. What are dimensions of the space? That info might spark some ideas.

I know you didn't ask, but I have an idea...to cover the face of the short wall in frosted glass or opaque glass to continue the look of the glass railings.

I would wait, maybe nothing, if you put a really pretty light in the stairwell that could be enough. I think storage, basket for blankets etc. Or an Olive tree.

Does it have to be drywall or can it just not be glass? What is the design of the glass railing?

What room is this? That would be helpful to know.

I would do a glass wall there I think that will look odd with the glass railing and then a nice low light plant and done I wouldw ant to know why the glass railing meets code but not this , I am thinking builder does not want the expense This is the same thing at the top of a stairway . Insist on what is the right choice since the builder did not use his brain in this sill design

Thank you all. It’s about 2’ wide and 4’ deep. We weren’t allowed to put a glass railing because the bottom has to have 4 inches and the stairwell won’t clear it. Code thing. We are thinking that maybe we bump up the drywall to only 4 inches and let the glass stand on top of that. It’s in the library/bar area.

If you have to raise a plinth of four inches above the diagonal ceiling, I would do it all the way around and it would be less noticeable than having it just on the end.

I don’t quite understand the 4” deal at bottom but your new plan of how to deal with issue sounds like a great compromise. It will look cohesive & allow the glass to ’flow’. You could still place a large pot & plant in the spot to give the oddball space some warmth & purpose.

What room is this? If it's a living room, that might be a nice spot for deep shelves with baskets for lap blankets or board games.

Yes!!! Thank you

100% to @palimpsest 's idea. It looks so much better to have glass on that short return railing. (And still, potentially nothing there. The glass itself is a beautiful thing to look at and see through.)

The only 4-inch code requirement I'm aware of for railings is the one that says "no openings that a 4-inch ball could fit through." That's a child safety thing: no way for a child to slip through or get caught. Whether a glass return on the railing would leave a 4-inch gap depends on how the railing is made. Here are several examples of various types of glass railings. Some have bases (floor mounted), some don't (side mounted); some have spaces between glass sheets, some don't; some have top rails, some don't. All meet the "no 4-inch gap" requirement even though they turn a corner.

There is minimal vertical space at the floor level coming up the stairs. The diagonal slant of that bit of "ceiling" narrows it to a couple inches. Maybe the inspector wants a little more vertical there for some reason

You're right, @palimpsest; I didn't notice that slant. That eliminates side-mounted rail there, leaving only floor-mount. Glass should still be possible, though, don't you think?

I am not sure, but if someone local is saying they need it, I don't think the plinth all the way around the bottom will be bad, because you won't have both too the floor and on a narrow base.

I dunno, I know someone eho did not get a COO because there were two inspectors (why two, I don't know. We only had one and he was so harried and cursory we could have had who knows what going on) in their jurisdiction and one of them did not think the single handled kitchen faucet "reflected the same ergonomics as hot on on the left and cold on the right" he felt it was backwards for some reason. They went to HD and bought a cheap faucet and put it in to pass, and then put the better faucet back in.

Maybe there's not enough depth to the floor framing for a secure floor mount at that edge? I would think mounting back a bit from the slanted edge would solve that, though, unless code prohibits any ledge between railing and stairwell. Have to go read about that!