The Secretary, by written determination, may grant exemptions from the following requirements: The right of first purchase under §§7-204—7-211 of the Act; Tenant relocation assistance under §7-212(b)(1) and (2) of the Act; One-year lease extensions under §7-212(b)(3) of the Act; and Designated household assistance of 3-year lease extensions and additional relocation assistance for certain households under §§7-214—7-219 of the Act.