The Contractors State Licensing Board (CSLB) considers 43 Trade Classifications, plus Limited Specialties. While one trade is no more or less essential than the next, it’s very important that you obtain trade certifications that you can apply to your current specialization.
There are three types of trades: General, Specialty, and Limited Specialty. General includes two types of trades, General A Engineering and General B Building. There are 41 combined Specialty and Limited Specialty Trades under the C and C61 Trades, which include the D Trade categories. There are different requirements for each Trade type, so working with an experienced school to learn what you need is crucial. Read the full list here.