Re: crawl space
Almost anything is possible. How much money do you have?
Jacking up a house and putting a new foundation under it is a well-established process. It's not unlike moving a house from one location to another, except that you're not putting it on a dolly to move it. With house moving, the actual transportation is only a fraction of the total cost -- most of the expense is preparing the destination site with a foundation, the jacking, and lowering.
Most construction contractors aren't equipped or experienced to take on this type of project; you want to look for house moving contractors or contractors specializing in retaining walls, foundation repair, or retrofit foundations.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.