A subcontract is not the GC's contract with the owner in miniature, it is a separate deal that decides what you build, what you get paid, and how much of the GC's risk gets pushed onto you. The GC usually writes it, and it is usually written to protect the GC. Your job is to know what has to be in it to protect you, and which clauses can quietly hand you risk you never agreed to carry. Here is what a sub agreement has to cover, and the handful of clauses that decide whether you keep your shirt.
The basics every sub agreement needs
Whether it is a GC's standard form, an AIA A401, a ConsensusDocs subcontract, or a one-pager, a subcontract that protects you covers all of this in writing:
- Who: full legal names of you and the GC, your license or registration number, and the insurance each side carries.
- What: the scope of your work in plain language, tied to the specific drawings, specs, and plan revisions, plus a clear list of what is excluded.
- How much: the subcontract price, and exactly how it can change.
- When you get paid: a payment schedule, the payment terms, the retainage withheld and when it is released, and how a payment application gets submitted and approved.
- When it is done: your start and completion obligations and how they tie to the GC's overall schedule.
- Changes in writing: a clause requiring a signed change order before any extra work, with a stated markup.
- How disputes go: the dispute-resolution path, and any notice you have to give to claim more time or money.
Miss the basics and every fight becomes your word against the GC's, with the burden on you.
The sub-specific clauses that decide your risk
This is where a subcontract is different from a contract with a homeowner. The GC's form will contain clauses that exist to move risk downhill onto you. Read these carefully every time:
- Flow-down (incorporation by reference). Almost every subcontract "incorporates" the prime contract between the GC and the owner, which binds you to obligations you may never have read. That means the owner's schedule, the owner's general conditions, and the owner's dispute rules can all apply to you. Ask for a copy of the prime contract and read the parts that flow down to you before you sign.
- Contingent payment (pay-if-paid vs pay-when-paid). This clause can make the owner paying the GC a condition of you ever getting paid. It is the single most dangerous payment clause in a subcontract, and some states ban the worst version. See the pay-if-paid guide and route your state.
- Indemnity and hold-harmless. A broad-form indemnity clause can make you pay for losses that were not your fault, including the GC's own negligence. Many states limit or void the broadest versions. See the indemnity guide.
- Retainage flow-down. The GC will withhold retainage from you, often the same percentage the owner withholds from the GC. Know the amount, and know when it releases, because retainage caps and release timing are set by state law.
- No-damages-for-delay. This clause can limit you to a time extension with no money when the job runs late through no fault of yours. See the delay guide.
- Termination for convenience. This lets the GC end your subcontract without you doing anything wrong. Make sure it still pays you for work performed plus demobilization. See the termination guide.
Scope and exclusions: pin down what you are actually on the hook for
The most expensive subcontract fights are about what your price did and did not include. Tie your scope to specific, dated drawings and specs, and write an exclusions list that is just as clear as the inclusions. If you are not doing the demo, the haul-off, the patching, the permits, or the final clean, say so in writing. A tight scope is what makes a change order stick when the GC says "that was always part of your number." See the scope and exclusions guide.
Protect your backstops
Even a fair subcontract can go bad if the GC or owner runs out of money. Your backstops are outside the GC's promise to pay, so protect them on every job:
- Lien and bond rights. On private work you generally have mechanic's lien rights against the property; on public work you have bond-claim rights against the payment bond. These often survive even a pay-if-paid clause, but only if you meet the notice and filing deadlines.
- Preliminary notice. Many states require a sub to send a preliminary notice early, often within the first few weeks of starting, or lien rights are reduced or lost. Send it on every job, not just the ones that go bad.
- Joint check agreements. If you are worried about the GC's finances, a joint check agreement with the owner and GC can route your payment more safely.
The exact deadlines and dollar rules for all of these are set by your state, so calendar them from Working in Your State the day you set foot on site.
Common questions
What is the difference between a subcontract and a prime contract?
A prime contract is the agreement between the owner and the general contractor; a subcontract is a separate agreement between the GC and you, the sub, for a defined slice of that work. They are two different deals with different parties. Most subcontracts "flow down" the prime contract's terms onto you by incorporating it by reference, which is why you should ask for and read the prime contract before signing. Your rights against the GC come from the subcontract, but your lien or bond rights run against the property or surety.
Do I have to sign the GC's subcontract as written?
No. A subcontract is negotiable like any contract, and the GC's standard form is written to protect the GC, so you can and should ask to change the clauses that shift risk onto you. The ones worth pushing back on are pay-if-paid, broad-form indemnity, no-damages-for-delay, and any flow-down you have not read. You may not win every edit, but asking often gets the worst language softened, and it tells the GC you read your contracts.
What is a flow-down clause in a subcontract?
A flow-down clause makes the terms of the prime contract between the owner and GC apply to you, so obligations you never directly negotiated can bind you. It usually shows up as language incorporating the prime contract "by reference." That can pull in the owner's schedule, general conditions, insurance requirements, and dispute-resolution rules. Always ask the GC for a copy of the prime contract and read the parts that flow down before you sign, because you are agreeing to be bound by them.
Does a subcontract protect my mechanic's lien rights?
Your lien and bond rights come from state law and run against the property or the payment bond, not from the subcontract itself, and they generally survive even unfavorable subcontract clauses like pay-if-paid. But you only keep them if you meet your state's notice and filing deadlines, which often start the day you first furnish labor or materials. Send any required preliminary notice early on every job and calendar your lien and bond deadlines from Working in Your State, because missing them is usually a complete bar.
The honest bit
- Required contract contents, retainage caps and release timing, prompt-payment deadlines, whether pay-if-paid is enforceable, and lien and bond notice deadlines all vary by state and are the details that decide real cases. Route every one of them to Working in Your State.
- Standard forms like the AIA A401 and ConsensusDocs subcontracts are more balanced than a GC's homemade form, but any form can be edited, and the edits are where your protection lives.
- This is general guidance, not legal advice. For a large subcontract, or the first time a GC hands you a form with heavy indemnity and pay-if-paid language, have a construction attorney read it once so you know what you are signing.
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