Cal. MVC § 987.92

Notwithstanding other provisions of this article relating to maximum sums to be expended by the department and maximum purchase price, the department may acquire or construct a home equipped with solar energy heating devices at a purchase price not in excess of five thousand dollars ($5,000) over the maximum amounts specified in Sections 987.60, 987.61, and 987.65. Solar energy heating devices for swimming pools, hot tubs, saunas, and spas shall not qualify for any expenditure pursuant to this section except in the case of veterans who were wounded or disabled as a result of their service and who provide medical evidence satisfactory to the department that a heated swimming pool, hot tub, sauna, or spa, is therapeutically necessary.