What are the chances of getting approved for an SBA loan when I do not have a house or stocks as collateral?

I am trying to start up a business, and need to apply for a 150,000 business loan. I do not own a house or stocks that banks look for as collateral. However, I do have a very detailed business plan and $25,000 to spend in cash. What are the chances a bank would approve of a loan. Are there any grants available for start up businesses through SBA? Are Venture Capitalist a good option or last resort?

Your chances are not good.

If you have no collateral and you have no experience in this type of business, oftentimes banks will not even look at your business plan. Even SBA will look for collateral as SBA loans come from banks as well though it is not the only factor (plus you're a little short of the 20% personal guarantee that SBA looks for) http://www.sba.gov/services/financialass...

Even SBA does NOT give out grants. From the SBA website http://www.sba.gov/mostrequesteditems/CO...

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"The U.S. Small Business Administration does not offer grants to start or expand small businesses, although it does offer a wide variety of loan programs. (See http://www.sba.gov/financing for more information) While SBA does offer some grant programs, these are generally designed to expand and enhance organizations that provide small business management, technical, or financial assistance. These grants generally support non-profit organizations, intermediary lending institutions, and state and local governments."
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Venture capitalists focus more on established businesses, but unless you know someone who provides seed capital, then try. But remember, venture capitalists will take some of the ownership from you