If your mother died with a will, the executor executes a deed to you and your brother. Your brother then executes a quitclaim deed leaving you as the sole owner. These need to be registered in the county clerk office. I am assuming there is no mortgage on the property. You may want to do a title search to make certain there are no liens of record on the property. Once you own the property you alone are responsible for taxes and insurance. If you are on your mother's deed as joint tenants with right of succession you may not need an executor deed, but that requires knowing how California handles such transfers. A real estate attorney might not cost that much and save you hours and hours of time.
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(Even if you are not filing a lawsuit this information can be useful).
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Mr. Sarno is licensed to practice law in NJ and NY. His response here is not legal advice and does not create an attorney/ client relationship. The response is in the form of legal education and is intended to provide general information about the matter in question. Many times the questioner may leave out details which would make the reply unsuitable. Mr. Sarno strongly advises the questioner to confer with an attorney in their own state to acquire more information.
You should hire a local probate or will trusts and estates attorney as you will need to file a document with the probate court first, then another document transfering title from your mother to you and your brother with the county recorder's office.
When you transfer the property you can avoid the property being reassesed by filing Claim for Reassessment Exclusion for Transfer Between Parent and Child (Proposition 58) - FILL-IN.
The form can be acquired on the Los Angeles County Assessor's website at http://assessor.lacounty.gov/extranet/list/forms.aspx.
You mentioned that your brother already has a property in his name. From your mother? If that is the case, and she did not specifically leave it to him, then he may agree to have you have this property in your name. If not the attorney may be able to help him agree.
Disclaimer. The information posted above is for general information, does not constitute professional legal advice, and does not create an attorney client relationship.