The Sims 4 Gallery

Does it have any CC content in it? Have you tried looking under the Advanced option?

It does have Custom Content in it, let me give that a try really quick.

That did not work.

Stupid question, but did you save it to your Library or the Gallery?

Saved it to my library

@Court332
If it is saved to your Library you won't find it on the Gallery, you need to upload it from your Library in order to do that. The Library and Gallery are not the same so if you only saved it to your Library it won't show up when you search for it on the Gallery.

One reason why you might not find it in your Library is if the building is made by someone else (or a maxis premade build) and you have the library set to show only your creations.

If you have uploaded it to the Gallery (from your Library) you are supposed to be able to just click on your username in the top right corner and then all the creations you have uploaded should show up.

If you are trying to find it in the browser and not in game, where it says "advanced" you need to click that and unclick the Maxis Curated tab. It always appears activated automatically when you open the gallery via a browser.