The following types of actions are those where notice is required by the administrator.
You generally have the power to take the following actions without prior court authority or giving a Notice of Proposed Action, but you must give a Notice of Proposed Action if you take these actions under the following circumstances:
Enter into a contract, if the contract cannot be performed within two years;
Invest money belonging to the estate, if the investment is something other than:
An obligation of the U.S. or State of California that will mature within one year of making the investment;
A money market mutual fund with a portfolio limited to U.S. government obligations maturing within five years of making the investment and repurchase agreements fully collateralized by U.S. government obligations;
Units in a common trust fund invested primarily in short-term fixed income obligations;
Eligible securities invested in surplus state money;
Investments that are permitted or directed by the decedent's Will.
Continue to operate the decedent's unincorporated business for a period longer than six months from the date Letters are issued, or if you are acting as general partner of a partnership;
Pay a family allowance to the decedent's surviving spouse or minor children, if or when you:
Make the first payment of a family allowance;
Making the first payment after 12 months have passed after the decedent's death; or
Make any increase in the amount of the payment of a family allowance.
Lease real or personal property for a term longer than one year:
Sell or exchange personal property belonging to the estate, if the property is something other than the following:
A security sold on an established stock or bond exchange;
A security designed as a national market system security and sold through a registered broker-dealer;
Perishable or depreciating personal property, or property needed to pay a family allowance
Grant or extend to a broker an exclusive right to sell property of the estate, if the original grant together with any prior extensions exceed 270 days.
You normally will not require a special notice for the above. And there are a list of things the administrator may do in the name of the estate which do NOT require notice.
To find the requirements, look here:
http://www.scselfservice.org/probate/prop/HowtoAdministertheEstate11.htm