Cambridge Code of Ordinances ch. 14.04 § 14.04.030

A. "Accessible" means with respect to buildings containing covered multifamily dwellings that the public or common use areas to the building can be approached, entered and used by individuals with physical disabilities. "Accessible route" means a continuous unobstructed path connecting accessible elements and space in a building or within a site that can be negotiated by a person with a severe disability using a wheelchair and that is also safe and usable by people with other disabilities.
B. "Age" means the actual or perceived chronological age of an individual eighteen years or older.
C. "Aggrieved person" includes anyone who claims to have been injured or is about to be injured by any unlawful practice listed in Section 14.04.040 of this Chapter.
D. "Blockbusting" means any effort, for profit, to induce or attempt to induce a person to sell or rent a dwelling by representations regarding the entry into a neighborhood of a person or persons of a particular race, color, sex, age, religious creed, disability, national origin or ancestry, sexual orientation, relationship status, family structure, gender identity, marital status, family status, military status, or source of income.
E. "Covered multifamily dwelling" means buildings consisting of four or more dwelling units if such buildings have one or more elevators; and ground floor dwelling units in other buildings consisting of four or more dwelling units.
F. "Disability" means a physical or mental impairment which substantially limits one or more of a person's major life activities, a record of having such impairment, or being regarded as having such an impairment. This term does not include current, illegal use of or addiction to a controlled substance as defined in Section 102 of the Controlled Substances Act [21 USC 802].
G. "Discrimination" shall mean a policy or practice that by design or effect segregates, creates unequal status, separates, or has a disproportionate impact on the basis of race, color, sex, age, religious creed, disability, national origin or ancestry, sexual orientation, relationship status, family structure, gender identity, marital status, family status, military status, or source of income.
H. "Dwelling" as used herein means any building, structure, or portion thereof which is occupied as, or designed or intended for occupancy as a residence by one or more families, and any vacant land which is offered for sale or lease for the construction or location thereupon of any such building, structure or portion thereof. A "dwelling unit" is a unit of residence for a family of one or more persons.
I. "Family" shall include a single individual.
J. "Family structure" means a single person, or two persons, or a consensual non-monogamous or consensual multi-partner family structure which may include one or more parents, stepparents or legal guardians of a minor child or children and/or two or more consenting adults in a multi-partner and/or multi-parent family structure, including stepparents, multi-generational and/or other non-traditional families.
K. "Family status" shall mean the actual or supposed condition of having children below the age of eighteen years domiciled with a parent, or another person having parental custody of such child or children, or the designee of such parent or other person having such custody with the written permission of such parent or other person. The protection afforded against discrimination on the basis of family status shall apply to any person who is pregnant or is in the process of securing legal custody of any individual who has not attained the age of eighteen years. Nothing herein shall limit the applicability of reasonable local, state, or federal restrictions regarding the maximum number of persons permitted to occupy a dwelling.
L. "Gender identity" means a person's gender-related identity, appearance or behavior, whether or not that gender-related identity, appearance or behavior is different from that traditionally associated with the person's physiology or assigned sex at birth.
M. "Housing set aside for, or limited to, the elderly" means housing:
1. Provided under any state or federal program specifically designed and operated to assist elderly persons; or
2. Intended for, and solely occupied by, persons sixty-two years of age or older; or
3. Intended and operated for occupancy by at least one person fifty-five years of age or older per unit. Housing qualifies as housing for the elderly under this section if and only if:
a. It has significant facilities and services designed to meet the physical or social needs of elderly persons, or if provision of such facilities and services is not practicable, or that such housing is necessary to provide important housing opportunities for elderly persons; and
b. At least eighty percent (80%) of the units are occupied by at least one person fifty-five years of age or older; and
c. There is publication and notice of, and adherence to, policies and procedures which demonstrate an intent by the owner or manager to provide housing for persons fifty-five years of age or older.
N. "Marital status" means the actual or supposed state of being or having been single, married, separated, or divorced.
O. "Military status" means the actual or supposed condition of being, not being, having been or not having been in the service of the military.
P. "Person" includes one or more individuals, partnerships, associations, corporations, labor organizations, legal representatives, mutual companies, joint-stock companies, unincorporated organizations, fiduciaries, trustees, trustees in bankruptcy, receivers, the City of Cambridge, and all political subdivisions, boards, and commissions thereof.
Q. "Real estate transaction" shall mean the making or purchasing of loans or providing other financial assistance for purchasing, constructing, improving, repairing or maintaining a dwelling; or secured by residential real estate; or the selling, brokering or appraising of residential real property.
R. "Relationship status" means the actual or perceived involvement or lack thereof of an individual in an intimate personal relationship or relationships including, but not limited to, interpersonal relationships between two or more consenting adults that involve romantic physical or emotional intimacy.
S. "Reasonable attorney's fees and costs" includes the reasonable expenses of expert witnesses, the reasonable cost of any study, analysis, engineering report, test, or project which is found by the court to be necessary for the preparation of the party's case, and reasonable attorney fees. The amount of fees and costs awarded shall be based upon prevailing market rates for the kind and quality of services furnished.
T. "Religious creed" means the actual or supposed faith, belief, or moral philosophy of an individual or the lack thereof.
U. "Sexual orientation" shall mean the actual or supposed heterosexuality, homosexuality, or bisexuality of an individual.
V. "Source of income" means public assistance recipiency. "Source of income" shall not include income derived from criminal activity.