What does the 'two unrelated trades' rule mean for a Class B General Building contractor?
Explanation
B&P §7057(a) defines the general building contractor by a structure whose construction requires the use of at least two unrelated building trades or crafts, and §7057(b) turns that definition into a limit on the prime contracts the contractor may take. (b) converts a scope test into a headcount: the question is what the project requires, and the contractor may self-perform trades its own classification covers. (c) invents a residential limit, while the definition reaches any structure built for the support, shelter, and enclosure of persons, animals, or property. (d) drops the §7057(b) limit, which is exactly what keeps a Class B out of single-trade specialty prime contracts.
Law Reference: B&P Code §7057(a)-(b)This topic, taught in full in the CSLB Law & Business guide. CSLB Law & Business — Complete Study Guide (2026) — PDF + EPUB, $24.99 · 14-day refund →
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