It’s kind of a mixed bag. Over the last few years they have used their size to force manufacturers to give them rebates which allow them to put better products in their homes. They are mostly using the same contractors as nicer builder because there just aren’t that many. We do Horton, Pulte, Kb but we also do custom, Perry, Toll Brothers, Taylor Morrison and other move up builders.
But they are the largest builder in the US, although with all of Lennars acquisitions they are giving them a run for their money, so they cut a lot of corners to same money.
HVAC will be the cheapest Carrier system they can put in. Windows will have the lowest rating that they can get away with. The house will have T Ply as sheathing, so Hardie-TPly-your homes insulation. They will have a very low spec with Moen, Kohler, tile, cabinets and countertops that will run a good amount to upgrade. Express series has no options.
They use very few plans and exterior claddings so you have to be ok for the neighborhood to look the exact same. They have gone mostly to 35 ft lots but in the $600k range I hope I am incorrect about that.
The final thing is their builder in the field, they hire entry level kids right out of A&M, TxState and Tech’s construction science programs and incentivize them by low salaries and bonuses for how quick they can build the house. This is where most issues come in.
If you go this route you need to be at your house at least once a week being a PITA. They may not like it but the house will be much better off because of this.