Hoarding Cleanout isn't a smaller version of a standard rental. It is a clearance needing discretion, protective equipment and a schedule that will slip, and that's what you're actually paying for. Most people find out the hard way that biohazard and pest conditions can require specialist handling before a container is any use.
A container can hit its weight limit while it still looks like it has room to spare β that's the number that actually gets billed. Ask around and you'll find families and property managers renting for this more than anyone else, choosing from containers as large as 20 or 30 yards. Two numbers decide the price: how much the load weighs, and how many days the container sits on the property.
Nobody knows what's actually in a garage or estate cleanout until it's being carried out the door, so the safer order is one size larger than the first guess. Listed capacity is measured in cubic yards, not by how comfortably debris fits -- a container rated for the job usually still needs everything broken down flat to actually hold it. A smaller container costs less and a second pull costs more β that's the trade-off, not a guessing game.