MacKinnon developed Linden Ponds senior living in Hingham, and is currently building a mixed-use development at the North Quincy MBTA Station. He said senior living is in high demand on the South Shore.

Residents who live behind the site on Pond Street expressed concern about noise and privacy, since the five-story building will rise above their yards and homes. MacKinnon met with residents and agreed to build a six-foot fence and adding plantings to minimize the impact.

Neighbor Joseph Romasco said he worked with someone from the Atlantic Development team who “smoothed everything out” and addressed his concerns with the project.

“I have complete confidence in this project,” he said.

The company proposed the project under the commercial overlay district that targets stretches of Columbian Street and routes 53, 18, and 3A. The town council approved the zoning in March 2018 as a way to encourage projects with a mix of housing and businesses.

The zoning district is meant to encourage developers to rehab blighted properties by building multi-unit housing with a commercial component.