Photo courtesy of Google Maps

Following a lengthy community outreach process, developers are moving ahead with conversion of a vacant former hotel at the Charlestown Navy Yard into affordable and supportive housing.

The Planning Office for Urban Affairs and St. Francis House reduced the total number of units from 126 to 100 as they prepare to file a development application for the property at 150 Third Ave., which is owned by the Economic Development and Industrial Corp. of Boston and currently leased to the YMCA of Greater Boston.

The developers will lease back nearly 21,000 square feet to the YMCA to enable it to continue operating its facility and aquatics program, according to a notification letter submitted to the BPDA by attorney Matthew Kiefer of Goulston & Storrs.

The Planning Office for Urban Affairs, which is the nonprofit affordable housing arm of the Archdiocese of Boston, and homeless shelter operator St. Francis House will reserve 48 units as supportive housing for women-headed households and veterans, including on-site professional services for residents, according to developers.

The 52 remaining units will be set aside for households earning $30,000 to $83,000 per year.

The proposal has generated opposition during community meetings held in recent months, and the nonprofit Neighborhood Voice Alliance group has threatened a lawsuit if the project is approved, the Boston Globe reported.

The 90,637-square-foot hotel closed in 2020 and the property was placed on the market.

Despite the disruption to the travel industry during the pandemic, the property is a rare example of a Boston-area hotel converting to other uses.

In May, the BPDA board of directors approved the $49 million conversion of the Comfort Inn hotel at 900 Morrissey Blvd. in Dorchester into 99 affordable supportive housing units. The project is co-sponsored by The Community Builders Inc. and the Pine Street Inn.

Detailed plans for the conversion of the 31-year-old Constitution Inn property will be submitted this fall.