O'Shea Properties began in 1978 with its first building on Veterans Highway and an operating hardware business that later gave way to a broader real estate focus. The company now serves as a family-run owner, manager, and developer of industrial, commercial, and office buildings, offering commercial units and single-story office suites across Long Island. The tenant base ranges from small local businesses to national and international companies, with a mix of industrial, office, and commercial spaces available. The company's history reflects steady expansion through development and acquisitions, with growth tied to Suffolk County's commercial corridors and a long-running presence in the region.