Two people? Two people at 60k make what after in CA after taxes? 34k? Those two people likely wouldn't qualify for a bottom end, 50 year old fixer home. A pretty good life?
Probably closer to 50k after taxes, even in CA. The effective tax rate for a family of four at 60k federal with standard deductions, personal exemptions and child tax credits are around 5%, or 3k, or less at 60k.
There are parts of the country where you can still buy a decent home for $100k. Heck, in the Los Angeles region it’s hard to live on $100k.