Dean of the College Harry R. Lewis '68 praised the Houses' response and said the administration has resources available to students who suffer from the incidents.
"A strong support network exists for anyone concerned about or affected by such harassment," added Lewis, who directed students to Harvard's "Community of Equals" brochure on resources dealing with sexual orientation.
Naddaff said the House committee will discuss possible responses to the incident at their meeting this week.
"The House council will be taking this up as an issue at their Sunday night meeting this week and inviting discussion from students about their concerns and possible ways of responding," Naddaff said. "There's been a lot of conversation and discussion among members of the House."
Naddaff said that while Mather faced an incident involving racist graffiti five years ago, she was not aware of a previous instance of homophobic graffiti in the House.