Even though the main contractor is responsible for those underneath him which includes what they do wrong, look them up anyway. DO NOT forget that no courthouse office keeps change to give you for those copies. If you think you need to bring more then do so. Go to the computers that may be located in the county and district clerks office. This way you might not miss anything.
Every company has to register with that office with the name of who owns it.
Granted, there could be more than 1 owner. If your searches do not yield any results then you might be able to breathe a sigh of relief. But remember, there may be some people that are too embarrassed to publicly sue someone. Also, please keep in mind that there may be more than one person with that name in your area. That is why you need to look at the case file to make sure that it is the right person.