Yes, you can really buy a single-family, detached home for under $100,000. Some of these are small and may need work but at that price it could be worth it. The catch is these detached homes aren't in California. The one on the cover of this article is actually in Port Huron, Michigan and is listed at $89,999. https://www.realtor.com/realestateandhomes-detail/1223-Short-St_Port-Huron_MI_48060_M46665-70494
For a peek at four other adorable options check out this Realtor.com article.
Something to consider if you have been priced out of California...