System and method for stair assembly and installation

A method for the off-site modular manufacture of staircase assemblies for installation at a remote construction site comprising the steps:

• a. obtaining design criteria for at least one stair assembly;
• b. obtaining building code requirements for at least one selected jurisdiction where a final permanent construction will occur;
• c. form a modular stair assembly that meets both the design criteria and the building code requirements;
• d. obtain a building code certification of the modular stair assembly;
• e. disassemble the modular stair assembly and package said disassembled modular stair assembly in sections optimized for either shipping costs or reassembly efficiency;
• f. ship said packages of said disassembled modular stair assembly to the at least one selected jurisdiction;
• g. reassemble the disassembled modular stair assembly at a specific stair assembly location by placing the at least one modular stair assembly within a stairwell envelope;
• and
• h. laterally extending the at least one outer stair element to comport with a final fitment before permanently securing the stair assembly.