Best Practices for Managing Subcontractors?

Subcontractor management comes down to clarity and discipline: prequalify vendors, define scope and terms, align schedules, document changes, and verify progress before approving pay applications. With consistent processes—and the right tools—you reduce disputes and keep projects on schedule and budget.

Nail the Scope & Contract Terms Up Front

Most conflicts trace back to unclear expectations. Lock in a concise scope and the rules of engagement before work starts.

  • Scope, inclusions/exclusions and deliverables tied to drawings/specs
  • Schedule & milestones that align with the master plan
  • Payment terms (progress/AIA, retainage, documentation required)
  • Change-order language: written approval before extra work
 

Prequalification & Compliance Checklist

Onboard subs with the same packet every time so compliance doesn’t slip through the cracks.

  • W-9, licenses, COI/workers’ comp, safety program/OSHA history
  • References and relevant project experience
  • Signed subcontract and lien waiver templates
  • Contact tree for field and office escalation
 

Scheduling & Coordination that Sticks

Short, regular touchpoints beat long, infrequent meetings.

  • 2–3 week lookahead with material lead times
  • Daily huddles for access, inspections, and dependencies
  • Clear RFI/submittal routing and turnaround expectations
  • Document site constraints (laydown, parking, delivery windows)
 

Field Documentation & Communication

If it isn’t documented, it didn’t happen—especially for changes.

  • Daily reports and photos tied to areas/trade
  • Extra Work Authorizations with on-the-spot e-signatures
  • Written change orders before executing extra scope
  • Attach tickets/invoices for stored materials or T&M backup
 

Change-Order Discipline

Scope creep kills margins. Keep COs visible and tied to billing.

  • Price and approve before work starts (use field EWAs to capture urgency)
  • Reference CO numbers on G703 Continuation Sheet
  • Apply retainage consistently on CO lines
  • Update the SOV and schedule immediately after approval
 

Verify Progress Before Approving Pay Apps

Trust—but verify. Align sub pay applications to your SOV and documentation standards.

  • Confirm percent complete by SOV line with photos/quantity logs
  • Require proof for stored materials (photos, invoices, location)
  • Track retainage and lien waivers by billing period
  • Reconcile COs and prior-to-date billing to prevent overpayment
 

How Software Streamlines Sub Management

Centralize scope, changes, progress, and billing to keep teams aligned and audits simple.

 

FAQs About Managing Subcontractors

 

What documents should I collect before a subcontractor starts?

W-9, COI and workers’ comp, licenses, signed subcontract, safety program, and lien waiver templates. Add contacts for field and office escalation.

How should I handle subcontractor change orders?

Use a field Extra Work Authorization for urgent requests, then convert to a written CO with price, scope, and schedule impact. Reference the CO on billing (G703).

What’s the best way to review a sub’s pay application?

Verify percent complete by SOV line with photos/quantity logs, check stored-materials proof, confirm retainage math, and reconcile prior-to-date totals and COs.

 

TL;DR Recap

  • Standardize prequalification, scope, and change-order rules
  • Use lookaheads, daily huddles, and photo-backed progress checks
  • Approve pay apps only with documentation and lien waivers
  • Werx centralizes SOVs, EWAs/COs, and billing with QuickBooks sync