California Code, Education Code - EDC § 17223

(a) Whenever a school district has either begun to use an unused site or has sold that site within two years of the date the Controller, pursuant to Section 17222, has deducted a certified nonuse payment from the district's State School Fund apportionment, the State Allocation Board shall certify that fact to the Controller.  The Controller shall then cease to withhold any additional payments and shall return to the district from the State School Site Utilization Fund the payments, without interest, which had been withheld for the particular site during the prior fiscal year and the current fiscal year.

(b) If the school district begins to use or has sold the site more than two years after the aforesaid date, the State Allocation Board shall so certify to the Controller and no further payments shall be withheld as specified in Section 17222.