see rules-of-thumb 1-5
"A promise from a Muslim is merely a way to end a conversations, and if you think anything else, then your a fool"
Also in SoCal, I've done commercial Real Estate with people from most racial/ethnic types.
When I describe the process, I caution my clients that if we deal with most middle-east and Asians, to remember "the deal isn't over until it is over."
This means they do not respect the contract they have signed, and will push for more right to the end.
And my position with my clients: Calif. law requires real estate to be done by written contract. We stick with putting everything in writing, and we prevail if ever in court.
One time, after such a sale transaction, an Asian buyer complimented my approach for representing the seller (another Asian). He said next time, he wanted me to represent him. His own Asian brokers had effectively failed him, by not doing the job for him.