In the event a purchaser of surplus residential property does not comply with terms, conditions, and restrictions imposed pursuant to Section 54237 of this article, to assure that such housing will remain available to persons and families of low or moderate income, the state agencies which sold the property may require that the purchasers pay the state the difference between the actual price paid by the purchaser for the property and the fair market value of such property, at the time of the agency’s determination of noncompliance, plus 6 percent interest on such amount for the period of time the land has been held by the purchaser. This section does not limit the right to seek injunctive relief to enforce the provisions of this article.