California Code, Probate Code - PROB § 15408

(a) On petition by a trustee or beneficiary, if the court determines that the fair market value of the principal of a trust has become so low in relation to the cost of administration that continuation of the trust under its existing terms will defeat or substantially impair the accomplishment of its purposes, the court may, in its discretion and in a manner that conforms as nearly as possible to the intention of the settlor, order any of the following:

(b) Notwithstanding subdivision (a), if the fair market value of the principal of a trust does not exceed one hundred thousand dollars ($100,000) in value, the trustee has the power to terminate the trust.

(c) The existence of a trust provision restraining transfer of the beneficiary's interest does not prevent application of this section.