call the house movers and they can raise the house up(you may or may not be able to live in it with temporary sewer/water/electrical hookups).
and then find a spot for the stairs.. upgrade a smaller electrical panal..upgrade heating or adding new ducts.
and then depending on the foundation upgrades needed or added too,etc. for the new basement walls plus a basement slab with plumbing underneath for new bedrooms, etc…about $30,000 and up, depending on work needing to be done.
pitfalls are if your current crawlspace has water problems..i never recommend going below natural drainage…..and having to climb stairs…or raising a house that is old with structural problems.
Remember the past or all is lost. http://www.geocities.com/theeagles_page/
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