(b) (1) “Affected property” means:

(i) 1. a residential rental property constructed before 1950 that contains not more than one rental dwelling unit; or

2. a residential rental property that contains not more than one rental dwelling unit for which the owner makes an election under § 6-803(a)(2) of the Environment Article; or

(ii) an individual rental dwelling unit within:

1. a residential rental property constructed before 1950 that contains more than one rental dwelling unit; or

2. a residential rental property that contains more than one rental dwelling unit for which the owner makes an election under § 6-803(a)(2) of the Environment Article.

(2) “Affected property” does not include property exempted under § 6-803(b) of the Environment Article.

(c) “Owner” has the meaning stated in § 6-801(o) of the Environment Article.

(d) “Rental dwelling unit” has the meaning stated in § 6-801(u) of the Environment Article.