(a) The commission may not acquire or approve construction of a building, including a building the acquisition or construction of which is financed under Chapter 1232, to serve the needs of a single health and human services agency unless the agency can provide a reason to the commission for not sharing space in the building with one or more other health and human services agencies.
(b) In this section, "health and human services agency" means the:
(1) Interagency Council on Early Childhood Intervention Services;
(2) Texas Department on Aging;
(3) Texas Commission on Alcohol and Drug Abuse;
(4) Texas Commission for the Blind;
(5) Texas Commission for the Deaf and Hard of Hearing;
(6) Texas Department of Health;
(7) Texas Department of Human Services;
(8) Texas Department of Mental Health and Mental Retardation;
(9) Texas Rehabilitation Commission; and
(10) Department of Protective and Regulatory Services.