Looks like a nice pad. I'm looking forward to seeing what comes next!!!
As for costs, it's crazy how they vary around the country. When I moved from the SF East Bay 15 years ago, a friend was building new homes for $300 a square foot. These where nice homes in the Hayward Hills with views of the Bay, but most of it was dealing with permits that required a fortune in engineering stamps, and then an absurd amount of concrete. If I remember correctly, he said that some of their footings had to go down over ten feet!!! Here in East Texas, you can get twice the house for a third the price!!!
I just paid $120 a yard for concrete. 15 years ago it was $80 a yard, and there where half a dozen concrete plants in the area. Now there are three, and they are all owned by the same family. They bought everyone else out, closed down half of them and run the others. Prices went up dramatically. Now there are two other companies competing and prices have leveled off.