(2) “Cohabitant” means an individual who for a period of at least 180 days in the year before the death of a fallen law enforcement officer or rescue worker:

(i) had a relationship of mutual interdependence with the fallen law enforcement officer or rescue worker; and

(ii) resided with the fallen law enforcement officer or rescue worker in the dwelling.

(3) “Disabled law enforcement officer or rescue worker” means an individual who:

(i) has been found to be permanently and totally disabled by an administrative body or court of competent jurisdiction authorized to make such a determination; and

(ii) became disabled:

1. as a result of or in the course of employment as a law enforcement officer or a correctional officer; or

2. while in the active service of a fire, rescue, or emergency medical service, unless the disability was the result of the individual’s own willful misconduct or abuse of alcohol or drugs.

(4) (i) “Dwelling” means real property that:

1. is the legal residence of a disabled law enforcement officer or rescue worker, a surviving spouse, or a cohabitant; and

2. is occupied by not more than two families.

(ii) “Dwelling” includes the lot or curtilage and structures necessary to use the real property as a residence.

(5) “Fallen law enforcement officer or rescue worker” means an individual who dies:

(i) as a result of or in the course of employment as a law enforcement officer or a correctional officer; or

(ii) while in the active service of a fire, rescue, or emergency medical service, unless the death was the result of the individual’s own willful misconduct or abuse of alcohol or drugs.

(6) “Surviving spouse” means a surviving spouse, who has not remarried, of a fallen law enforcement officer or rescue worker.

(b) The Mayor and City Council of Baltimore City or the governing body of a county or municipal corporation may grant, by law, a property tax credit under this section against the county or municipal corporation property tax imposed on a dwelling that is owned by a disabled law enforcement officer or rescue worker, a surviving spouse of a fallen law enforcement officer or rescue worker, or a cohabitant:

(1) if the dwelling was owned by the disabled law enforcement officer or rescue worker at the time the law enforcement officer or rescue worker was adjudged to be permanently and totally disabled or by the fallen law enforcement officer or rescue worker at the time of the fallen law enforcement officer’s or rescue worker’s death;

(2) if the disabled law enforcement officer or rescue worker was domiciled in the State as of the date the disabled law enforcement officer or rescue worker was adjudged to be permanently and totally disabled or the fallen law enforcement officer or rescue worker, the surviving spouse, or the cohabitant was domiciled in the State as of the date of the fallen law enforcement officer’s or rescue worker’s death and the dwelling was acquired by the disabled law enforcement officer or rescue worker within 10 years of the date the disabled law enforcement officer or rescue worker was adjudged to be permanently and totally disabled or by the surviving spouse or cohabitant within 10 years of the fallen law enforcement officer’s or rescue worker’s death;

(3) if the dwelling was owned by the surviving spouse or cohabitant at the time of the fallen law enforcement officer’s or rescue worker’s death; or

(4) if the dwelling was acquired after the disabled law enforcement officer or rescue worker, the surviving spouse, or the cohabitant qualified for a credit for a former dwelling under item (1), (2), or (3) of this subsection, to the extent of the previous credit.

(c) A county or municipal corporation may provide, by law, for:

(1) the amount and duration of a property tax credit allowed under this section;

(2) any additional limitation to the number of years the dwelling was acquired within the date of an adjudication of disability or death; and

(3) any other provision necessary to carry out the provisions of this section.