No person shall refuse to rent a dwelling unit to any rental applicant solely on the basis that the applicant proposes to rent such unit pursuant to a Section 8 voucher or certificate issued under the Housing and Community Development Act of 1974 (42 USC 1437(F)); provided this section shall only apply with respect to a Section 8 certificate if the monthly rent on such residential unit is within the limits of fair market rent as established by the Department of Housing and Urban Development. “Dwelling unit” shall have the meaning set forth in BCC 20.50.016. (Ord. 4118 § 1, 1990.)