A licensed contractor's license lapses due to suspension during part of a project. Under section 7031, what risk does the contractor face regarding pay for work done while unlicensed?

解析

B&P §7031 requires a contractor to be duly licensed at all times during performance, and bars an action to collect compensation for work performed while unlicensed — the owner may also sue to recover everything already paid. (a) is the misconception §7031 was amended to close: licensure at signing is not enough. (b) treats the consequence as monetary discipline rather than a bar on the contract action. (d) invents a cost-versus-profit split; the bar reaches all compensation, not the margin alone.