A: This is a grey area. We spoke with the owner of Hercules Foundation Repair in Dallas and he provided some good tips on how to pick a quality company. First, look for referrals and references from previous customers. Any quality concrete company should have these upon request. Secondly, look for accreditations like being involved with the BBB, Angies List and other such organizations. Third, ask for a proof of insurance. Most quality home improvement companies will have no problem providing these documents.