That's a great question! The time it takes to install a set of benches can vary quite a bit, but I can give you a realistic breakdown from my experience. For a typical flat-pack garden bench from a store, if you're working alone with basic tools, expect to spend about 1 to 2 hours on assembly. This involves unpacking, sorting parts, following the instructions, and tightening all the bolts.
However, several factors can change this timeline dramatically. A simple, pre-assembled metal bench might just need placement and leveling, taking only 30 minutes. On the other hand, a heavy, complex wooden bench with multiple sections or requiring concrete footings could easily take half a day or more for a DIYer.
Your preparation is key. Having the right tools (wrenches, screwdrivers, a level, maybe a rubber mallet) ready will save huge amounts of time. If the ground isn't level or needs clearing, add extra time for site preparation. Also, having a friend help isn't just more fun—it can easily cut your assembly time in half, especially for handling large pieces.
So, for a straightforward answer: plan for 1-2 hours per bench for standard assembly. Always check the manufacturer's manual first, as they often provide a time estimate. Don't rush; taking your time ensures a stable and safe final result that will last for years.