Recommend you get your plans first before you talk to house raisers. They can't help you with much except general information until you have your plans in place.
Couple of places recommended to me were:
Meier House Raising
A-Accurate House Raising
Worth getting a few quotes as not only may you get a better price, but each guy who comes along and looks at the job (and your plans) will have suggestions/ideas/observations from their experience which will give you a different view on various things. For example, the joists on my deck don't look that flash, and after some suggestions I decided to add some extra PFC beams to the deck which will give me peace of mind when its 3m in the air and there is a party of 20 on it.