Pen. Code, § 6029

(a) The plans and specifications of every jail, prison, or other place of detention of persons charged with or convicted of crime or of persons detained pursuant to the Juvenile Court Law (Chapter 2 (commencing with Section 200) of Division 2 of the Welfare and Institutions Code) or the Youth Authority Act (Chapter 1 (commencing with Section 1700) of Division 2.5 of the Welfare and Institutions Code), if those plans and specifications involve construction, reconstruction, remodeling, or repairs of an aggregate cost in excess of fifteen thousand dollars ($15,000), shall be submitted to the board for its recommendations. Upon request of any city, city and county, or county, the board shall consider the entire program or group of detention facilities currently planned or under consideration by the city, city and county, or county, and make a study of the entire needs of the city, city and county, or county therefor, and make recommendations thereon. No state department or agency other than the board shall have authority to make recommendations in respect to plans and specifications for the construction of county jails or other county detention facilities or for alterations thereto, except such recommendations as the board may request from any such state department or agency.

(b) As used in this section, “place of detention” includes, but is not limited to, a correctional treatment center, as defined in subdivision (k) of Section 1250 of the Health and Safety Code, which is operated by a city, city and county, or county.