That's an excellent and very practical question! The answer depends entirely on the specific bench you purchase and the manufacturer. Generally, benches fall into two main categories: pre-assembled and ready-to-assemble (often called flat-pack).
Pre-assembled benches are delivered to your site fully put together. They are typically ready to use immediately upon placement. This option is common for heavy-duty commercial or public space benches made from materials like cast iron or solid, welded metal. The main advantage is convenience—no tools or time required. However, shipping costs are higher, and the item is more susceptible to shipping damage.
Most commonly, especially for residential garden benches, you'll find ready-to-assemble (RTA) or flat-pack models. These are shipped in a box with all parts, hardware (bolts, screws, washers), and an instruction manual. You perform the on-site assembly. This method drastically reduces shipping costs and the risk of transit damage. Assembly usually requires basic tools like a wrench or screwdriver and can take anywhere from 20 minutes to a couple of hours. Many people find the assembly process straightforward.
So, to directly answer your question: Yes, benches can be and often are assembled on-site from a flat-pack. Always check the product description before buying. Look for terms like "requires assembly," "DIY assembly," or "flat-pack." If you prefer zero hassle, specifically search for "pre-assembled" or "fully assembled" benches, understanding this may limit options and increase cost.