A label that says what kind of work a contractor does — roofing, electrical, plumbing, plastering, and so on.
Hemma assigns trades automatically when a contractor first appears, using their public registration codes. You can override the trade if it's wrong. Trades drive the contractor list grouping, the trade filters, and the way quote comparison aligns competing quotes line for line.
Most projects need eight to twelve trades. The trade list is fixed — Hemma maintains it — but you can ask for more if something obvious is missing.