Upon application to it and after verification by it, the city or county shall require compensation of at least one month‘s rent and may require compensation of actual relocation expenses be paid to a qualified tenant whose displacement is due to action on the part of a property owner to qualify for the benefits under this chapter. However, the city or county may require the persons causing the qualified tenant to be displaced to pay all or a part of the relocation payments as a condition for receiving a tax exemption under section 404.3. “Qualified tenant” as used in this chapter shall mean the legal occupant of a residential dwelling unit which is located within a designated revitalization area and who has occupied the same dwelling unit continuously since one year prior to the city’s or county’s adoption of the plan pursuant to section 404.2.