Section 15411 Of Chapter 3. Modification And Termination Of Trusts From California Probate Code >> Division 9. >> Part 2. >> Chapter 3.

. If the terms of two or more trusts are substantially similar, on petition by a trustee or beneficiary, the court, for good cause shown, may combine the trusts if the court determines that administration as a single trust will not defeat or substantially impair the accomplishment of the trust purposes or the interests of the beneficiaries.