They aren't the same. Your turn at landing is opposite the neighbors one and two. The only way to be rid of it is to move/change the stair elevation. Or close up the passage on left side with enough stud/drywall to square it off.

Nobody here can do a thing. Go to the foreman for the project, ask, and see what can be done. I guarantee it won't be much, this is a bang it out, spec build : )

If you square that off you will block the opening, and also is there a door on the side for storage under the stairs or basement stairs if there is a basement? Because on the picture you posted it looks like there is casing on that side wall.

Have it cut back to the level of the ceiling .

It appears that the trim carpenter was in school the day they learned the shortest distance between two points is a straight line. Unfortunately, they apparently weren't when the subject of parallel lines was introduced.

Your stair rail needs a short level section at the top and a fitting called an up-easing to connect it with the inclined portion of the railing. The fact that you need to educate the trim carpenter suggests there's plenty more "fun" in store.

The handrail is not parallel to the treads?

Unless there is a detail drawing about how these conditions are to be handled specifically, they often get framed out and drywalled at the discretion and convenience of whoever is doing the boxing in and drywalling around these sorts of spots with unresolved design issues.

Get it fixed now for sure and what do you mean by not parallel to what? Your stairs are not like the others so no point in comparing.

All four of the stairs are different. The base rail cap is straight at the top on the model. Both neighbor's base rail caps are segmented. Your base rail cap segment looks to be longer than the neighbors', so that must be the cause of it not being parallel to the handrail. Also, the middle neighbor has all easings on the handrail into newel.

Even with tract housing, crews may be different each house, tradespersons within the same company may be different each house, even the very same carpenter could have forgotten how he/she did it on the last house.

Certainly make a ruckus with the builder about the finish carpentry to fix the base rail cap to make it parallel - it doesn't seem like it was necessitated by different stair detailing because if it did then that would probably put the handrail out of code. IMO this is more egregious than the drywall "soffit," but the stair flight would require all new balusters, handrail, cap, and paint - that is a lot to ask to be redone for free. So depending on that outcome I may keep the drywall soffit situation in my back pocket - it doesn't look like it may be a problem to do later if your builder can't be pushed.

Take a picture of the top flight of stairs from either the top or middle landing. From this angle it is not clear why the stringer cap, handrail and ceiling beneath are not parallel to each other. Either the bottom or top of the rail is not following typical design and may be off from code, but not possible to tell without seeing this from the other side.

@Joseph Corlett, LLC @Patricia Colwell Consulting The sloped ceiling is not parallel to the treads. And the handrail is also not parallel to the treads.

Do you like the model house and the neighbors' houses better? Or like mine better (if the builder can make the sloped ceiling and the treads parallel)?

What a cluster....

You will not get them to change anything strictly for esthetics. If the rail does not pass code they will need to change/fix it. If the building inspector signs off, you have two options, close and accept the house, or do not close and walk away from your deposit.

"Do you like the model house and the neighbors' houses better? Or like mine better?"

Overlooking the "un-parallelness," you are only aware of this since you've seen the other houses and compared pictures with a fine tooth comb. If your house were the first done you probably never would have thought twice about it. So it boils down to what you prefer - then what you can push for, what you're willing to pay for, or what you are willing to live with after something has entered your mind. But remember, I'm sure your contract says nothing about holding the builder to match the model exactly or that every house in the neighborhood has to be exactly the same.

"And the handrail is also not parallel to the treads."

That's an undeniable do-over.

100% a do over. Inspector might not notice of course because in my area they are always in a rush…

Do you mean "And the handrail is also not parallel to the treads." is a code violation so the handrails need to be fixed?

Not the sloped ceiling under stairs?

"Not the sloped ceiling under stairs?"

Sloped ceiling under the stairs is pure esthetics and a non-starter with code issues.

For handrails, code does not say they must be run parallel to the sloped plane that adjoins all tread nosings. They just have to be in the range of 34"-38" above that plane. Hopefully (ironically), the top treads are not code compliant, which would mean you have a case to force a redo and gain in aesthetics from that. But we cannot tell from the pictures and info given.

For the drywall 'soffit,' it is not logical they would build one unless they were trying to hide something, like the stringers sitting proud of the wall. You won't know until you have a peek inside the drywall.

It looks like neighbor two also has upgraded handrail.

All of these houses are probably different dimensions by inches here and there so what works in one won't work quite like that in the neighbor.

I prefer the slope to what the other homes have, but only if it's parallel.

Hello. I found the pictures I took during framing.

The builder changed the framing under stairs right before sheetrock.

Can you help look into these pictures?

Which is easier? To make the ceiling under stairs flat? Or make it parallel to the treads?

Thank you.

"The builder changed the framing under stairs right before sheetrock."

What did he change? You have what you have at this point, he will not tear it all back now. He owes you a similar representation of the model, not exact, things change slightly all the time.

Which is easier ? None of it is "easier" . Nor is it going to happen. You're obsessing on something you won't even notice when the house is furnished.

You're asking us, when the only conversation you should have is with the foreman who is in charge of your build.

You aren't measuring..........could have been a few inches of stair pitch, for all we know. Stairs ....have codes. Go to the foreman, all else is a waste of time. If you insist on this alteration? Slow the build and PAY$$$$$$$

"Which is easier?"

It is easier to live with it the way it is currently built and move on. No one is going to notice any difference.

It looks like a duct was added, could that have anything to do with the change?

Do you know if there's any decoration which could hide this imperfection(the weird spot)? Do you think molding can be added there? Or something like a longer post extending to the sloped ceiling? Will it work?

How many stairs do you have?

@Mark Bischak, Architect One. It's right in front of the main door. That's why I'm trying to make it look better.

Is the last one your's?

No one will notice that quirky corner unless you point it out. You have seen it and will never be able to truly ignore that spot however,  others will probably never notice.  Even if a sharp eyed visitor looks askance at that spot,  they won't be judging you. 

Most every house has an awkward spot somewhere, and stairs are always a challenge. My house has an enclosed stair and one side has a trim piece that is on top of the end while the corresponding  piece on the opposite side is underneath the end. I didn't notice until I was trying to figure out how to install a hand rail. Now that the railing is in place, I don't even see the weird offset any more

@Mark Bischak, Architect This is mine

View from the main door

View from 1st floor

Leave it be, no one will notice and the last thing you want to do is decorate and draw more attention to it.

Is anyone as LOST as me? Which exactly is what you have NOW? !

Really, based on the third pic? Concentrate more on decor/ hallway - stop staring up? Can't say ( sorry ) I am gleefully style overwhelmed by the stair carpet. IF that is actually yours? Create more interest/ better use of jogs etc, below the offending spot, and move on.