Every GC has the story. The sub who disappeared three days before completion. The electrical contractor whose rough-in failed inspection, twice. The tile guy who looked great in photos but whose grout lines you could park a truck in.
One bad subcontractor can destroy a job that was otherwise on track. What separates contractors who consistently have good sub experiences from those who don't usually isn't luck. It's systems.
Qualification, documentation, communication, and accountability, built before anyone starts work. That's the system.
Qualify Before You Commit
The best time to find out a sub is unreliable is before they're on your job site. A basic qualification process takes 30 minutes and can save you 30 hours of headaches.
- ✓License verification, check it yourself; don't take their word for it
- ✓Insurance certificates, GL and workers' comp, with your company as additional insured
- ✓References from other GCs, not just homeowners
- ✓Ask how they've handled a problem on a previous job, their answer tells you everything
Ask directly: "Tell me about a time something went wrong on a job. How did you handle it?" The answer tells you how they will behave when your project hits an issue, and it always does.
The Subcontract Agreement Is Not Optional
A handshake is not a contract. A text message chain is not a contract. A clear, written subcontract agreement that both parties sign before work begins is a contract.
Without a signed subcontract, you're having a conversation you'll likely lose, whether that's about incomplete work, warranty disputes, payment disagreements, or schedule failures.
Your subcontract should define:
- ✓Scope of work in detail, specific, not vague
- ✓Schedule: start date, milestones, completion date
- ✓Payment terms and schedule
- ✓Change order procedures
- ✓Insurance requirements
- ✓Warranty obligations
- ✓Dispute resolution and termination clauses
Write Tight Scope, Every Time
Vague scope creates disputes. "Install electrical throughout" is not scope.
Vague (Creates Disputes)
"Install electrical throughout the renovation."
Specific (Protects You)
"Provide all labor and materials for electrical rough-in and finish per plans, including panel installation, all branch circuits, all devices and fixtures per the attached fixture schedule."
Every grey area in the scope becomes a potential extra charge. The 20 minutes it takes to write tight scope saves hours of argument later, and potentially thousands in disputed costs.
Payment and Lien Management
Understand your lien exposure before you pay. In most states, subs and suppliers can file mechanics liens against your client's property if they don't get paid, even if you already paid the GC above them.
- ✓Use conditional lien waivers tied to each payment
- ✓After the check clears, collect an unconditional waiver
- ✓Never pay ahead of work completed
- ✓Progress payments should track to percent complete on their scope
Paying a sub upfront in full is a reliable way to become their lowest priority. Funds received, motivation gone. Pay for work completed, not work promised.
When Things Go Wrong
Subs will fail to perform at some point. How you handle it determines whether you recover or compound the problem.
- ✓Document everything, photos, written notifications, emails, texts. Date-stamp it all.
- ✓Give formal written notice before back-charging or terminating
- ✓Most subcontracts require a notice and cure period, skip this and you weaken your legal position
- ✓Back-charges need documentation too, document the specific impact, not just the complaint
A GC had a flooring sub walk off a $280K custom home. Because the GC had documented every schedule miss and sent formal written notice, they recovered full back-charge costs plus replacement costs in mediation. Without the documentation, it would have been a he-said-she-said stalemate.
Build Your Approved Sub List
The best subcontractor relationships are long-term. Subs who know how you work, trust that you'll pay them fairly and on time, and have a history with you will prioritize your jobs over unknown GCs.
Build a list of approved subs in each trade. Rate them after every job. Note who showed up on schedule, who communicated well, who did quality work. Over time you'll have a reliable stable of trades, and a short list of ones to avoid.
Your approved sub list is a competitive advantage. The contractor who can put 8 reliable subs on a job in 48 hours wins projects the rest of the market can't take on.