Contractor Business 8 min read BUILT FOR CONTRACTORS

Subcontractor Agreement: What Every GC Needs to Include (2026 Guide)

Last updated: Invalid Date

Most GC-subcontractor disputes trace back to one cause: no written agreement, or an agreement missing a critical clause. Here's what every subcontractor agreement needs — and why each section exists.

⚡ Subcontractor Agreement — The Quick Version

✓ A verbal agreement with a subcontractor is essentially no agreement — disputes will favor whoever has documentation
✓ Insurance requirements must be specific: GL minimums, workers' comp, and additional insured status
✓ Lien waiver exchange at each payment is the most important administrative habit in subcontractor management
✓ Back-charge and remedy clauses define what happens when a sub's work is defective — get these in writing
✓ Pay-when-paid vs. pay-if-paid is one of the most consequential clauses in the agreement — know which you're using

A comprehensive subcontractor agreement isn’t bureaucratic overhead — it’s the document that defines what happens when something goes wrong. Most GC-subcontractor relationships that end in disputes had no written agreement, or an agreement that was missing the exact clause that applied to their situation.

Write the agreement before work starts. Review insurance certificates before anyone mobilizes. Collect lien waivers with every payment. These habits, consistently applied, prevent the categories of problems that cost GCs the most time and money.

Sources & Further Reading

Written by RemodelFin Editorial Team

RemodelFin's editorial team is comprised of former project managers, estimators, and business owners who have collectively managed over $50M in residential remodeling volume across the US.

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Contractor Q&A

Does a subcontractor agreement need to be in writing?

Yes — always. Oral agreements with subcontractors are unenforceable in most meaningful disputes. If a subcontractor walks off a job, delivers defective work, or injures someone, your ability to recover costs depends on what your written agreement says. A one-page written scope-and-price agreement is better than nothing; a complete subcontractor agreement is better still.

What insurance should I require from subcontractors?

Minimum subcontractor insurance requirements: (1) Commercial General Liability — $1,000,000 per occurrence / $2,000,000 aggregate, with your company named as Additional Insured; (2) Workers' Compensation — statutory limits per your state, if the sub has employees; (3) Auto liability — $1,000,000 combined single limit if they drive vehicles on your behalf; (4) Professional liability — for design-build or engineering subcontractors. Always request certificates of insurance before sub starts work and verify they're current.

What is pay-when-paid vs. pay-if-paid?

Pay-when-paid: you pay the subcontractor within a reasonable time after you're paid by the owner — typically 7–14 days after owner payment. This is standard and acceptable to most subs. Pay-if-paid: you only have to pay the sub if and when the owner pays you — if the owner defaults, you owe the sub nothing (the owner's payment risk flows down to the sub). Pay-if-paid clauses are enforceable in some states and prohibited in others; they're contentious and many experienced subs won't work under them.

When should I collect a lien waiver from a subcontractor?

Collect a conditional lien waiver from each subcontractor with every payment, and an unconditional lien waiver at final payment. A conditional waiver becomes effective when payment clears — it waives lien rights through the date specified, contingent on payment. An unconditional waiver is immediately effective — collect these only after you've confirmed payment has cleared the sub's account.

What is a flow-down clause in a subcontractor agreement?

A flow-down clause specifies that the terms of your prime contract with the owner apply to the subcontractor — the sub agrees to be bound by whatever you're bound by. This is particularly important for: safety requirements, schedule requirements, insurance requirements, dispute resolution procedures, and change order processes. Without flow-down, your sub might be working to different standards than your owner contract requires.

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