Visiting Nurse Home & Hospice is selling its Portsmouth headquarters and looking for a new location. The nonprofit home health agency announced it has placed its more than 20,000-square-foot headquarters, located at 1184 East Main Road, on the market with Kirby Properties LLC. The real estate company has listed the building for $3.2 million. “The contemporary model for home health requires a much smaller footprint than it did 28 years ago when we bought this building,” said Jennifer Fairbank, CEO of Visiting Nurse Home & Hospice. “For example, a lot of our space was once used for medical supply storage and housing thousands of paper medical records. Today, most supplies are shipped directly to patients and all of our records are electronic. We simply don’t need to be heating and maintaining a building of this size.”