As a cleaning subcontractor, your job is to clean residential, commercial, or government facilities on behalf of the primary contractor. Subcontractors have a separate business license and are wholly separate companies that typically specialize in areas like carpets, skyscraper exteriors, or landscaping. Success as a cleaning subcontractor involves forming relationships with the main contractors and completing jobs by the stated deadlines. A record of efficiency is crucial for finding new work and making consistent profits in this competitive field. Just like contractors, subcontractors need to keep special requests from the client in mind while getting each job done.