On April 11, 1968, President Lyndon Johnson signed the Civil Rights Act of 1968, which was meant as a follow-up to the Civil Rights Act of 1964. The 1968 act expanded on previous acts and prohibited discrimination concerning the sale, rental, and financing of housing based on race, religion, national origin, sex, (and as amended) handicap and family status.
A covenant, restriction or condition contained in any deed, contract, security agreement or other instrument affecting the transfer or sale of any interest in real property shall not be applied to prohibit the indoor or outdoor display of a for sale sign and a sign rider by a property owner on that person’s property, including a sign that indicates the person is offering the property for sale by owner. The size of a sign offering a property for sale shall be in conformance with the industry standard.