California Code, Probate Code - PROB § 10252

(a) Where the property is directed by the will to be sold.

(b) Where authority is given in the will to sell the property.

(c) Where the property is perishable, will depreciate in value if not disposed of promptly, or will incur loss or expense by being kept.

(d) Where sale of the property is necessary to provide for the payment of a family allowance pending receipt of other sufficient funds.