Subcontractor Prequalification Guide for GCs

What Prequalification Should Answer

The process should answer a few direct questions:

• Does the subcontractor perform the required scope?
• Has the subcontractor completed similar work?
• Can the subcontractor staff the project schedule?
• Are required documents current?
• Are licenses, registrations, or certifications relevant to the project verified?
• Does the subcontractor understand the bid package?
• Are references or past performance concerns known?
• Is the subcontractor a good fit for the owner, site, schedule, and contract?

Prequalification should reduce uncertainty before bid day, not create paperwork for its own sake.

Core Review Areas

Scope Fit

Confirm that the subcontractor performs the trade package being considered. Review specialties, exclusions, equipment needs, union or nonunion fit where relevant, geography, and similar project experience.

Capacity

Ask whether the subcontractor can staff the work during the expected schedule. Capacity review should consider current workload, project size, management coverage, foreman availability, and lead time for materials or specialty crews.

Documentation

Document requirements vary by project. Review the solicitation and contract documents before deciding what to collect.

Typical records may include:

• W-9 or vendor setup information
• Insurance certificates
• License or registration information where applicable
• Safety information
• References
• Past project examples
• Bonding or financial information when relevant
• Certifications requested by the owner or project

Safety And Quality

Safety and quality review should focus on relevant project risk. Ask for procedures, recent project experience, training records where appropriate, and known constraints that could affect performance.

References And Past Performance

References help confirm how a subcontractor communicates, staffs projects, manages change, and closes out work. Keep notes factual and tied to project experience.

The Prequalification Questionnaire

A strong questionnaire is short enough to complete and specific enough to be useful.

Include sections for:

1. Company profile
2. Trade specialties
3. Service area
4. Project experience
5. Key contacts
6. Insurance and documentation
7. Licenses or registrations where relevant
8. Safety information
9. Current workload
10. References
11. Project-specific questions

For a deeper questionnaire workflow, use the contractor prequalification questionnaire guide.

How To Score Subcontractors

Keep scoring transparent. A simple rubric is usually easier to defend and apply.

Example score categories:

• Scope fit
• Similar experience
• Schedule capacity
• Documentation completeness
• Safety and quality fit
• Reference feedback
• Bid responsiveness
• Project-specific risk

Avoid treating the score as a substitute for judgment. The project team still needs to review exclusions, qualifications, and price.

Connecting Prequalification To Bid Leveling

Prequalification and bid leveling should work together.

During bid leveling, compare:

• Scope coverage
• Exclusions
• Alternates
• Unit prices
• Schedule assumptions
• Labor or crew assumptions
• Long-lead items
• Required documents
• Capacity concerns
• Clarification responses

Use the subcontractor bid comparison tool to keep bid review structured.

Keep The List Current

Subcontractor records become stale. Update them when:

• Insurance expires
• Licenses or registrations change
• Key contacts change
• Workload changes
• Performance issues occur
• A subcontractor completes a project successfully
• A new project has different requirements
• The subcontractor expands or changes trade coverage

The best prequalification database reflects current project reality.

Bottom Line

Subcontractor prequalification helps GCs build better bid lists and make better award recommendations. Keep the process project-specific, verify documents against the actual solicitation, connect the review to bid leveling, and update records after each project.