We got $100k........by refinancing our home during the real estate boom of 2005.
Extremely risky move. I don't recommend this, as you may very well lose everything.
I agree with Missy. Grants are rare. Loans are a better option, especially if you want to purchase the real estate for a center. The terms for sale of commercial real estate can be super tricky, so be careful. We got a loan from Fifth Third Bank, they had good rates and terms. I've also heard community banks are good sources for funding.