In short, there’s no good way to do that. It’s not required information.

As you say, a company’s complaint record would make more sense if you had a good idea about the number of moves a year it makes. However, there are ways to get an idea of how many moves a moving company will make.

First, you can get an idea of the size of a moving company by going to ProtectYourMove.gov – this Website has information about licensing, insurance and accidents. Although it doesn’t list number of moves a year, it does give you the number of trucks that it operates. Generally speaking, if it only has 1 truck, it can’t make a lot of moves. And generally speaking, a mover that only has 1-2 trucks can be a red flag, particularly if you want to make a long distance move.

As far as the BBB, I’d say more than 2-3 complaints is too many. Frankly, not many dissatisfied consumers get this far in the process, so the ones that do are often a determined lot and a good indication of how negative an experience someone had with a moving company.

You can also ask the moving company how many moves they make a year, although there's no really good way to check it (although if you don't trust a moving company's answer about how many moves they do a year, you probably shouldn't hire that company).

Just as important as number of complaints, I’d find out how long the moving company has been in business. The longer a mover’s been around, the more assurance you can have that it’s a solid company – the moving industry is so competitive that poor performers generally don’t last. It’s a good sign if a moving company has been in business for over a decade.