Current conditions at the site. Photo by Peter Wilk/Wilk Marketing Communications

Construction has begun on an intergenerational affordable housing development at the site of a long-vacant hospital in Forest Hills. Foxy Development and Selfhelp Realty Group on Wednesday announced work has begun on The Perennial, a mixed-use project that converts the existing Parkway Hospital building, inactive since 2008, into 145 affordable apartments for seniors and families. Developers describe the $150 million project as one of New York’s most complex public-private development projects in recent history and the neighborhood’s first deeply affordable senior housing project.

Foxy and Selfhelp are co-developing the project, with Newman Design serving as the architect. Structural engineering is handled

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