GLASTONBURY, Conn. — Ask people in this Hartford suburb how the campaign to build “Manny’s house” went viral, and they may consult a spreadsheet or sketch a Venn diagram or two. Trust them when they say, “It’s complicated.”

But complicated is just one way to describe the story. How Manny’s house evolved from blueprint to concrete-and-plywood reality is also a tale of generosity, organized through countless human connections that might have once seemed utterly random but, in retrospect, are viewed in Glastonbury as weirdly, perhaps divinely, fated.