SOP Templates > Plumbing > Subcontractor Coordination > Subcontractor Prequalification & Onboarding

Subcontractor Prequalification & Onboarding for Plumbing

The Subcontractor Prequalification & Onboarding workflow helps plumbing contractors evaluate and integrate trade partners efficiently. It includes reviewing licenses, insurance, safety history, and references, then providing orientation on quality, scheduling, and compliance standards. Managers document approvals and confirm alignment with project expectations. By using this process, plumbing companies reduce risks, protect profitability, and improve efficiency. Clients benefit from reliable subcontractor performance and smoother projects. Teams gain accountability with structured onboarding. With this workflow in place, plumbing contractors can strengthen professionalism, improve efficiency, and deliver projects more reliably while fostering strong subcontractor partnerships.

Identify scope of work and subcontractor needs for upcoming projects

Request company info from potential subs (business name, contacts, trade license)

Verify licenses, certifications, and required trade qualifications

Collect insurance certificates (liability, workers’ comp, auto)

Request references and review past project experience

Evaluate safety record and request EMR, OSHA logs, or safety program

Review any past performance with your company, if applicable

Send and have sub complete prequalification form

Approve or reject based on internal qualification criteria

Send subcontractor onboarding packet (contract template, expectations, payment terms, etc.)

Review and sign subcontract agreement

Provide project-specific details (site rules, contacts, schedule expectations)

Assign cost codes and confirm invoicing procedures

Add approved sub to project and vendor directory

File all documentation in subcontractor records