You should re-post this question in the California law section, as you need a California lawyer to answer this.
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I agree with Mr. Rich, this is not really a question for a Colorado attorney if the property is not in Colorado, unless of course that attorney is also licensed to practice law in the state of California.
I agree that you should repost as a California question. I would simply add that, unless your uncle has a Power of Attorney in place, or the properties are in a trust, there is no legal way for you to take charge of this situation, unless you are appointed the guardian and/or conservator for your uncle. You should consult with a lawyer to determine how to proceed.
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