California Code, Code of Civil Procedure - CCP § 487.030

(a) At any time prior to the entry of judgment in the action, the defendant may claim any exemption provided by subdivision (a) of Section 487.020 with respect to real property by following the procedure set forth in Article 2 (commencing with Section 703.510) of Chapter 4 of Division 2 of Title 9. A claim of exemption under this subdivision shall be denied if the claim has been denied earlier in the action.

(b) At any time prior to the entry of judgment in the action, the defendant may claim the exemption provided by subdivision (b) of Section 487.020 with respect to real property either (1) by following the procedure set forth in Article 2 (commencing with Section 703.510) of Chapter 4 of Division 2 of Title 9 or (2) by following the procedure set forth in subdivision (c) of Section 482.100 except that the requirement of showing changed circumstances under subdivision (a) of Section 482.100 does not apply. A claim of exemption under this subdivision shall be denied if the claim has been denied earlier in the action and there is no change in circumstances affecting the claim.

(c) For the purposes of this section, references in Article 2 (commencing with Section 703.510) of Chapter 4 of Division 2 of Title 9 to the “judgment debtor” shall be deemed references to the defendant, and references to the “judgment creditor” shall be deemed references to the plaintiff.

(d) Nothing in this section limits the right to claim after the entry of judgment a homestead exemption for real property under Article 4 (commencing with Section 704.710) of Chapter 4 of Division 2 of Title 9 unless prior to entry of judgment the defendant has claimed the exemption provided by subdivision (a) of Section 487.020 with respect to such property and the claim has been denied.