Thank you everyone for replying. Sorry about the lengthy post. Here are the quick details, a 20x20 deck, with a two piece 20 foot 2x8 ledger, lag bolted with a single center row of lag bolts. The ledger hangs past the house corner 5 feet, so 15 feet of ledger attached to the house. 7 posts to be used, 2 rows of 3, and one under the end of the ledger that is not connected to the house. All posts are ten feet apart. Posts are to be 6x6, sitting on 8" nominal sonotubes. Beams are to be 2x12x20, bonded with adhesive, and nailed. 6x6 are to be notched to accept the beams, which will sit flush. Joist hangers on both sides of center beam, hangers on the ledger, hangers on the end beam. Soil is clay, slope is about 20" over the twenty feet downward away from the house. All wood is PT. Posts will sit on post anchor in cement. Joists are to be 2x8x10. Most holes have hit water, none are below the 42" frost line. Ledger corner post supporting free end hit a large rock 12 inches in. Will this deck stand up? Should the area be back filled in order to have the cement columns be under the frost line? Contractor says ground never really freezes that deep, 30" is hard frost. In regards to inspectors, permits etc. There are no building inspectors here, there are no permits. Parents live in Vermont, near Rutland, not in the town. Small town, no permits needed. Didn't need one for the house, or garage etc. You just have to pay the additional tax when they assess it. I'll post photos in about 90 minutes. Thank you all again, I really appreciate busy individuals taking the time to help a naive stranger.