When the Board of Pensions renegotiated its lease for the three floors it has occupied in a Philadelphia high-rise since 1996, it gained very favorable rent terms — and cash for renovations. In July, the makeover of agency headquarters began. The work, expected to take about seven months, is being done floor by floor. Every employee will be moved from one floor to another at least once to make way for workers. As a result, Mike Fallon, Executive Vice President and Chief Financial Officer at the Board, had to figure out what to do with the office furniture being left behind as floors empty out. So, he called Habitat for Humanity Philadelphia. The global nonprofit housing organization has already visited the Board once to pick up chairs to sell in ReStore, its discount improvement store, and is expected to return.