Potentially buying an off-market property

[Dan Deng]

I have come across a property that an owner approached me about purchasing off market with no agents because they do not want to pay the realtor fees.  As I have never done an off-market purchase before, what steps do I need to take to make sure this is done properly?  Can I just download a California Real Estate Purchase Agreement template from online, fill it out and move forwards with that?  Is it more complicated than this?  I know I will have to find my own inspection company(s) and the like but is there anything else I need to think about?