The Town Plan and Zoning Commission approved two new dorms at Sacred Heart University on Tuesday, despite residents’ concerns about the proposal’s possible impact on the neighborhood. Sacred Heart requested a zoning regulation amendment and a special exception permit to create freshmen housing on Jefferson Street. The 15.48 acre property abuts the rest of Sacred Heart’s campus on the east, south and west, according to town documents. The proposed buildings would be three stories tall and connected by a bridge on the third floor. They would total about 133,600 square feet and would add 484 beds in the form of 115 four-person suites. Commission Chairman Thomas Noonan said he supported the regulation amendment, adding the building was expected and planned.