(9) To discriminate in the sale or rental of a dwelling because a person relies upon aids
such as attendants, specially trained animals, wheelchairs, or similar appliances
or devices but the owner shall not be required to modify or alter the building in
any way in order to comply with this chapter. An owner shall permit, at the expense
of the person with a disability, reasonable modifications of existing premises occupied
or to be occupied by the person with a disability if the modifications are necessary
to afford the person full enjoyment of the premises. The owner may, if reasonable,
require the person to agree to restore the premises to the condition that existed
before the modification, reasonable wear and tear excepted, but the owner may not
require an additional security deposit for this purpose.