This kind of reminded me something that I wanted to say earlier.The last custom build price/sqft I heard from a builder was $300/sqft, and that was some years ago. At $520k, you're at less than $250/sqft. I think you might be getting a pretty good deal.
A contractor who gives you a price per sq ft number, unless they are giving you their blueprints on a house they have built several times is a massive red flag.
If you are designing your dream home there is no way anyone builder can say "we're at $275 per sq ft." Its just damn near impossible.
Now if they sit down with your plans and spend a week or 2 doing a full take off and come up with a number and then figure out where they came in at PPSF, thats different.
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