Cal. Sts. & Hy. Code § 10311.5
If the proposed improvement includes the acquisition of any improvements constructed pursuant to the provisions of the Subdivision Map Act, Division 2 (commencing with Section 66410) of Title 7 of the Government Code, and such improvements were financed, in whole or in part, from the proceeds of any loan secured by a mortgage or deed of trust upon any lands within the proposed assessment district, upon submission of evidence, satisfactory to the legislative body, of the foregoing, the mortgagee or beneficiary under any such mortgage or deed of trust may protest in the same manner and to the same extent as the owner of such lands.
Any contract by a city for the acquisition of any such improvements shall provide that, in the absence of contrary written instructions by any such mortgagee or beneficiary, the purchase price for said improvements shall be paid to the owner and to the mortgagee or beneficiary, as their interests may appear.
Ca. Sts. and High. Code § 10311.5