Rehab money
@Ty Monroe you get money to rehab the same way you do to purchase the property. Saving your personal money, private loans, hard money, etc.. 203k rehab loans are a good idea if you plan on going the FHA loan route.
Let me know if there's any thing else or further questions you have!
You could also use home equity money if it's available, and smaller community banks tend to like to lend to investors who are improving the local community.
We usually get it from our own reserves or from private loans (mom and pop types that lend to us at 8-9% interest only with no points). If you don't have the savings, I would look for either a private loan or a partner to fund the rehab.
I agree with the prior responses. It is also true that --
Savings is Murphy repellent
When buying a house, whether for your personal residence or as an investment, having a fair amount of savings will save you from headaches. Life happens and when it does it requires money.
Work, learn and save. When you have a bit set aside it's time to get into the game.