The 4 x 8 kits take between 45 and 90 minutes to assemble. The 1’ and 2’ high Durable GreenBeds are easily assembled under 60 minutes of your time. The tiered beds will take approximately 90 minutes. All of the holes are pre-drilled. All that you need is a level place to put the Durable GreenBed, a hammer, a tape measure, a cordless drill with a ¼” nut driver and Phillips head and a socket wrench with a ¼” socket. Assembly is easy and instructions are clear.