Subcontractor management is the work of picking, coordinating, and paying the trades who do most of the building. Do it well and jobs finish on time and on budget. Do it poorly and you get delays, cost overruns, and disputes. The job comes down to four habits: vet hard, write clear contracts, talk often, and pay on time.

How do you pick the right subcontractors?

Vet every sub before you put them on a job. A few hours of checking saves you weeks of cleanup later.

Run real due diligence

  • Verify their license for the trade and the state where the work happens.
  • Check the certificate of insurance. Confirm general liability and workers' compensation are active. A current certificate of insurance protects you if a sub gets hurt or causes damage.
  • Call past references. Talk to the GCs and owners they worked for last year.
  • Check their finances. A sub who cannot make payroll will walk off your job.
  • Pull their safety record. Ask about OSHA citations and recent incidents.

Build a bench you trust

Keep a roster of reliable subs across every trade you use. Long-term relationships get you better pricing and priority when you are slammed. The same crews learn how you work, so onboarding gets faster each job.

How do you set clear expectations?

Most sub disputes start with a fuzzy scope. Write down exactly what each sub owns before work begins.

Write a tight scope of work

Every subcontract should spell out:

  • What work is included, and what is not
  • Quality standards and specs
  • A schedule with milestone dates
  • Payment terms, retainage percent, and billing steps

Hold a kickoff meeting

Walk each sub through the scope, schedule, safety rules, and how you want them to communicate. This alignment up front stops most misunderstandings. For more on standing up a repeatable process, see our subcontractor management best practices.

How do you keep communication clean?

Meet on a set schedule

Run weekly or biweekly coordination meetings with active subs. Review progress, clear blockers, and look ahead to the next milestone. Steady check-ins keep small issues from turning into big ones.

Document everything

Write down scope changes, verbal agreements, and field decisions. Keep it in one place so nothing falls through the cracks. A central record also backs you up if a payment or scope question comes up later.

Use a written change order process

Require written approval before any extra work starts. This stops fights over scope and cost down the line. Estimating tools let you price a change order fast and get sign-off before crews lift a finger.

How do you handle subcontractor payments?

Money is where most relationships are won or lost. Track it like the contract depends on it, because it does.

Track costs against the budget

Watch sub costs in real time against your project budget. Track invoices, payments, and retainage for each sub so you catch overruns early. Time and materials tracking keeps the numbers straight on T&M agreements.

Pay on time

Most subs work on net-30 terms. Late payments push your job to the back of their list. Pay promptly and you stay first in line when crews are tight.

Manage retainage and waivers

Retainage usually runs 5% to 10% of each payment, held until the work is done. Track every held dollar so you release it on the right terms. Collect a signed lien waiver with each payment to protect your title. AIA billing software handles retainage tracking across all subs and pay periods.

How do you handle performance problems?

Address issues early

Do not let problems sit. Raise quality, timeline, or safety concerns the day you see them, and document the talk. Give the sub specific examples and a clear bar for fixing it.

Enforce the contract

Your subcontract is your best tool for resolving disputes. If you wrote a detailed scope, clear payment terms, and a change order process up front, you have solid ground to stand on. For a deeper playbook, read our guide on how to manage construction subcontractors.

When should you formalize subcontractor management?

Tighten up your process once you run more than two or three subs at a time, or any job large enough that a single missed payment or scope gap costs real money. On a small one-trade repair, a simple agreement and a phone call may be enough.

Once you stack multiple trades on overlapping schedules, you need written scopes, tracked retainage, and a central record. That is the point where contractor software like Werx pays for itself.

Key takeaways

  • Vet every sub: license, certificate of insurance, references, finances, and safety record.
  • Put scope, schedule, and payment terms in writing before work starts.
  • Run regular check-ins and require written change orders.
  • Pay on net-30, track retainage at 5% to 10%, and collect lien waivers.
  • Address performance issues the day you spot them and enforce the contract.