Confronted with limited space to build the staircase needed to access the living area and bedroom on the second level, General Assembly designed a custom solution. "These stairs are not an ideal design for everyone and shouldn't be used as primary stairs—we like to think of them more as millwork with a little bonus to it, than an actual staircase," Zames says. "The cube construction of the stairs actually came from a budget standpoint. We were very tight on budget and wanted to maximize the material as much as possible."  190+ Best Modern Staircase Ideas from Smart Staircases that Double as Storage