Is it a good Idea to put property with 10 relatives, it' into an LLC for protection from being sued.

In my opinion you have to look at the facts of the case to know what's right. I figure it costs about $1,000 a year to have an LLC in California. There are some creditor protection benefits. However, depending on how much rent is coming in that $1,000 a year can really cut into your rental profits. I would rather have a good general partnership agreement and the best insurance you can get. I encourage you to explore your options with an attorney.