Someone making $25k per year as a single person? After deductions, they should be under $2500 in federal tax. That's $1875 a month gross. When I was about that, I rented a place for about $200 (don't be above rooming with someone or renting a room in someone else's apartment), and made sure it was convenient to shops and work. No car, and with a roomate, that often doesn't mean no transport for the odd times you need a car. $10 a day for food - $300 a month. So $500 a month in room and board. $0 on health care (yes, that takes luck, when you have nothing, you depend on luck some). So with $1375 a month in disposable income, you could save. My first "home" was $80k. That takes $16k down, or about 2 years of tough saving. After that, I made over $1000 a month in appreciation. Get in when you can, where you can, and trade up. My experience is land appreciates, buildings don't. So don't buy condos or such if you can avoid it. And be willing to move to follow work and housing. Right now, there are places with insanely low housing (and not just Detroit).
Of course, it's easier for me, I was in the top 10% of earned income earners in the US, and moved out, to a place with higher cost of living, and higher pay. I managed to pay off my last US house, and it's rented out for a tidy profit, and I own two homes here (both with mortgage), sucking a large chink of cash, but appreciating at about $150,000 per year at the moment. Yes, I'm making more as a land owner than working. But you have to get on the ladder to climb it. And until I had my first place, I lived pretty frugally.