Cal. Penal Code § 6242.5

(a) The board shall establish minimum standards, including security requirements, for the construction of facilities pursuant to this chapter. (b) The board shall develop an architectural program describing the functions which the facility will be expected to serve, but which deemphasizes the correctional and detention nature of the exterior of the facilities in order to ease the difficulty in finding acceptable sites. (c) Counties may substitute renovation of an existing structure for new construction, but renovation costs per bed shall not exceed the cost of new construction based on initial cost and useful life of the facility, and shall meet the program design standards established by the board. However, participation by a county or use of existing facilities for programs under this chapter shall not be utilized by a county to avoid meeting its needs for jail-bed construction and housing of jail inmates. (d) Per-bed cost of secure facilities proposed by a county shall not exceed the cost of current similar construction by the department. (e) The county shall lease the site on which the facility is located to the state for a term of not less than the period of bond repayment. The department shall pay to the county as lease the sum of one dollar ($1) per year beginning the first month after the first payment for the repayment of the bond to continue through the duration of the bond used to finance construction of the facility.