How some people dream up designs...

It seems what you've sent is the first floor plan, not ground. You can attach that as a comment

You will not be able to change the stair on a spec build. Stairs are a step/height/depth to code combination. He gave you the option you dislike.......a result of that code.

Stairs take up space but don't help square footage.

Builders are tightening up stairs on model home plans to make them as narrow and as steep as possible to reduce the amount of floor space they take.

The kick at the end is necessary based on what you have shown and reworking them is going to require more changes than you're going to be allowed to make.

Is your builder one who is amenable to changes? Some production builders are, some are not. Some are and won’t charge or won’t charge much, some are but will expect to be paid the equivalent of a few mortgage payments.

Either way, if they are amenable to change, this is a pick a poison deal. Either you have a straight shot and block off dining room entrance from foyer, or you do an “L” or angled “L” like you currently have and have to walk around to get to (kitchen? great room?). I don’t know what else can really fit stairwise in that small space without some significant structural changes on both floors (ie double winders, etc). That may not (is likely not) going to be doable depending on your builder or where you are at in your build and space for the wind has to come from somewhere - other rooms - so you are back in a pick your poison situation.

You chose a plan where the stairs are a prominent feature (ie rather than tucked away) so they are going to be visible or in some fashion “taking up visual and physical space” in your foyer. I can’t speak to the steepness - all depends on code where you are and your builders standards - this one may just follow the minimums for the applicable code in your jurisdiction for this particular model to get more floor space rather than consider what is more comfortable for use. I toured a lot of parade homes before we chose our builder and plan and while there were builders who clearly built as standard wider, longer stairs (nicer to climb) some, at least in some models) made staircases as tight as they could resulting in steeper, narrower - but still to code - stairways.

Don't buy the house.

Run away .

I'm guessing the only thing the builder will allow you to change are the style of the balusters and newel post and what color stain or paint. Otherwise to change that staircase would be a major redesign of much of the house

There's a change in floor level next to the crazy staircase??

Get out of the contract.

Stairs are math and math is indifferent to your tastes. Math is not subjective; it treats everyone equally no matter their skin color or wealth. Substantial stair alterations happen in an air conditioned office before the teeth of a backhoe has ever kissed topsoil. You may have a little tweak or abandon the contract, but now, at framing, there is nothing in between.

I can't tell the dimensions and don't know the height of the ceiling, what it looks like in the basement, and how much area you have to work with, but I think if all those pieces aligned it would be possible to do what the picture you show depict, but you'd likely need to move the stairs to the other side and the entry into the room beyond the foyer to be on the opposite side. Not sure centered would still work.

Did you see the model home before you committed to this house? Were you OK with the stairs at that time?

From what little we can see of the plans, I see a couple of other things you can probably change, namely the double doors at the entry, and the double doors to what I presume is the master bedroom upstairs.

"...the builder told us the stairs would be slightly wider in our model than what we were seeing"
are they?

"and also gave us the option of a curved stair case instead of the way it is shown."
what was decided upon?

"does anyone have any other ideas"
Physically, it's possible to demolish the staircase and rebuild it, narrowing the dining room entrance and starting straight along the wall, with two turns making a u-shaped staircase. Physically, anything is possible. Practically, feasibly, it is not at all.
There's a lot more to consider than shifting on paper. I hope you don't plan on living here for a long time.

Ask the stair guy if the stairs would fit if they just came straight down. That’s probably your only option.

It's a difficult problem and one that is all too common in spec housing.

Nice Michael KD !

I will keep you in mind when need to add more space to my less than 2 years old built home.

Sounds as if you're already committed to the house even if otherwise this might be a dealbreaker. Here's what I've learned over a long time: things that seem wrong and have to be fixed often don't matter nearly as much if all other basics a great--location, size of house, light, yard, etc. If these major "givens" are really great as you say, then move in and see how the stairs feel day to day. It may not be that big a deal once you're in the place.

I once had what seemed like a dangerous stairway ledge that I was afraid my future kids would kill themselves on. Before any of them were born!!!! I called a carpenter to come over give an estimate about moving all the railings a foot over to eliminate the ledge. He thought I was nuts. Guess what? I was. Instead we put some attractive objects on that ledge and trained the kiddies about stairway safety on any stairs. As far as I know they never walked along that ledge.

Many of my postings are about "making do" alternatives to rebuilding, reconfiguring, moving fixtures, etc. I'm not one of the pros on here, so I rarelysuggest moving windows, doorways, stairs. (One of my default answers is "get a smaller TV" when people are considering all kinds of expensive carpentry to accommodate a humongous TV.) I like to suggest common sense ways to live with an awkward feature by changing some other element first or living with it so that you come up with your own alternatives. Move in, see how it goes, ask friends who come to the house if they can think of simple ways to deal with your awkward feature. Every house has them. If there are too many, then don't buy . But if the house has otherwise great features, then live with its imperfections.

"@Mark as an architect why do you say that?"

Stairs are a potential hazard at any age*. Making one or more of the treads or risers different from the rest increases the hazard. I have had clients request at least one landing in a flight of stairs so if they do fall they are not falling the full length of the stair. See if whoever designed the house can come up with a safer solution without compromising the design of the home.

*SOURCE: bit.ly/2yNBGax American Journal of Emergency Medicine, online September 20, 2017.

@michaelkilpatrickdesign I checked that other wall the 2'4" return wall, it's actually a loadbearing wall and wouldn't be able to be removed, would that interfere with the design you provided?

Adnan - how wide is the foyer and how long, is the upstairs mirrored from the picture you posted above as to me the location of the stairs in the first floor and the 2nd floor don't line up? Do you have a basement? Can the stair location move in the basement?

What is straight ahead from the foyer when walking in the front doors?

Probably. I would look at flipping the flush 2-2x10 with the 2'4" section of load bearing wall. I'd guess that there is a beam below to handle what is there now. But this should be confirmed.

You may want to ask the builder what these modifications will cost (hold onto your hat), a developer/tract home builder generally clips you pretty good for changing ANYTHING, and they usually are pretty firm in what they will not change as well. You start asking to move load bearing wall and you will find out pretty quick teh answer will be no, especially since the house is framed. That's just the nature of this type builder. The time for making these types of changes had long since passed.

"It’s not really a new thing I’ve been saying I didn’t like it much from the start"

But the framing is completed. But at the end of the day nothing a lot of money cannot change. But as Joe alluded to math is math, you are severly limited at this point and that is why you have not been given many solid ideas.