My mom past away without a will my sister and i agree to 50/50 like my mom wanted

I'm sorry for your loss. You need to be appointed personal representive of her estate in order to have the legal authority to sell assets in her name.  This is accomplished by filing court documents seeking appointment with the probate court for the region where your mother lived.  You should contact the court to obtain these forms. You and your sister both have priority to be appointed personal representative (as your mother's heirs) and could serve either together or with just one of you in the role.  Once a personal representative is appointed, there is a four month period for creditors of the estate that is required by law, but assets can be sold during that period.  Once it has ended, the personal representative(s) will have the authority to split the estate assets between you and your sister.  This distribution is in accordance with the law of intestacy (dying without a Will) as long as you and your sister are your mother's only living children and she did not leave a surviving husband or grandchildren from a deceased child.