California Code, Government Code - GOV § 76100

(a) Except as provided in Article 3 (commencing with Section 76200), for the purpose of assisting any county in the acquisition, rehabilitation, construction, and financing of courtrooms, a courtroom building or buildings containing facilities necessary or incidental to the operation of the justice system, or court facilities, the board of supervisors may establish in the county treasury a Courthouse Construction Fund into which shall be deposited the amounts specified in the resolutions adopted by the board of supervisors in accordance with this chapter.  The moneys of the Courthouse Construction Fund shall be payable only for the purposes set forth in this subdivision and in subdivision (b) and at the time necessary therefor, subject to the requirements set forth in Chapter 5.7 (commencing with Section 70301).

(b) In conjunction with the acquisition, rehabilitation, construction, or financing of court buildings referred to in subdivision (a), the county may use the moneys of the Courthouse Construction Fund for either of the following:

(c) Any excess courtroom, excess courtroom building or buildings, or excess court facilities, that are acquired, rehabilitated, constructed, or financed pursuant to subdivision (b) may be leased or rented for uses other than the operation of the justice system until the excess courtrooms, excess courtroom building or buildings, or excess court facilities, are needed for the operation of the justice system.  Any amount received as lease or rental payments pursuant to this subdivision shall be deposited in the Courthouse Construction Fund.

(d) The fund moneys shall be held by the county treasurer separate from any funds subject to transfer or division pursuant to Section 1463 of the Penal Code.

(e) The amendments made to subdivision (a) by the act  adding this subdivision are declarative of existing law and shall be used for determinations made pursuant to subdivision (c) of Section 70403.