How does one write well? :D Are writers born from nothing? Wow does one find the essence of meaning, woven in ink, bound in the mind. Not pap mind you (which is all fine and dandy) on a Saturday morning, writing, which invokes thought? Any ideas on how to keep the audience engaged without divulging too much of the plot? How does one remain surreptitious without spiraling out into the mundane and mediocre prose that is so dry I have to stop and get a drink just to get through?
Now, does the story need to be tied directly to the dwelling in question; or, can it just be a central setting and kinda sit off to the side when it comes to dialogue? Indeed, 4000 words while daunting at first glance while there be enough space to fit in a full cast, or maybe develop fewer characters with greater emphasis on the setting (or if your building is the main character) as such? Overall quality, depth, rhetoric, and dialogue. Versus outright ambiance of the setting manifested.
Is anything really being said or is it all babble? Write an outline, but if the foundation is flawed, cracked, skewed to begin with then whole work would be for naught? How does one reveal their hand without actually doing so as to risk being undermined later on? It comes down to doing it for the sake of the art rather than the competition. There is not better way to learn than through trial and error.