5 Questions to Ask Your GC About How He Manages His Subcontractors

Your general contractor doesn’t build your house. His subcontractors do. The plumber, the electrician, the steel crew, the concrete team, the HVAC contractor, the framers — these are the people whose hands are on your home every single day.

So when you’re choosing a GC for a luxury build, the most important question isn’t “how long have you been in business?” It’s “who are the people actually building my home, and how do you manage them?”

Why Subcontractor Management Matters More Than You Think

On a – custom home in Los Angeles, you’re looking at 20–30 different subcontractors over the course of the project. Each one is a licensed specialist. Each one has his own crew, his own schedule, and his own way of doing things.

The GC’s job is to turn those 20–30 independent businesses into one coordinated team. When that coordination works, your project stays on schedule and on budget. When it breaks down, you get delays, finger-pointing, and change orders.

Here’s what most homeowners don’t realize: the relationship between a GC and his subs is built over years. A GC who has worked with the same plumber for a decade doesn’t need to explain his standards — the plumber already knows them. He doesn’t need to chase him for a callback — the plumber picks up because the relationship matters to both sides.

That relationship is worth more than any line item on a bid.

The 5 Questions

1. How long have you worked with your core subcontractors?

This tells you whether the GC has a stable team or is hiring off Craigslist for every job. A luxury GC should have long-standing relationships with his key trades — plumbing, electrical, HVAC, concrete, steel, and framing at minimum. If he can’t name his plumber and tell you how many projects they’ve done together, that’s a red flag.

2. Can I see your sub list for this project?

A confident GC will hand this over without hesitation. It should include company names, license numbers, and the scope each sub is responsible for. If a GC is protective of his sub list or says “we’ll figure that out as we go,” you’re looking at a GC who doesn’t have a team — he has a Rolodex.

3. What happens when a sub doesn’t show up or falls behind?

This is a when, not an if. On an 18-month build, something will go wrong with a subcontractor at some point. What you want to hear is that the GC has backup relationships, that he can bring in another crew without losing weeks, and that he’s dealt with this before. What you don’t want to hear is “that doesn’t happen with my guys.” It happens with everyone’s guys.

4. How do you handle conflicts between your project manager and a subcontractor?

This is the question nobody asks — and it’s one of the most revealing. On a complex build, tension between a PM and a sub is inevitable. Scheduling pressure, quality standards, communication styles — these create friction. A GC who says “my PM handles the subs, I handle the client” is telling you he’s not involved in the most critical relationships on the project. The best GCs stay close to their subs personally. When a plumber who’s been with you for years gets into it with your PM, the GC needs to step in, hear both sides, and reset the relationship — not pick a side. Losing a trusted sub over a communication problem is one of the most expensive mistakes a GC can make. A new sub means re-learning standards, re-establishing expectations, and hoping the replacement shows up the way the last guy did.

5. Do your subs carry their own insurance, and do you verify it?

Every sub on a luxury build should carry their own general liability and workers’ compensation insurance. Your GC should verify this before they set foot on site — not assume it. If a sub’s worker gets injured on your property and doesn’t have workers’ comp, that liability can land on you. Ask to see the certificates of insurance for every sub. A professional GC will already have them on file.

What Good Answers Sound Like

You’re not looking for scripted responses. You’re looking for specificity. A GC who says “I’ve worked with my plumber for eight years — he was on the Canon Drive project, the Chevy Chase build, and two more before that” is telling you something real. A GC who says “we work with great subs” is telling you nothing.

The subs are where the quality lives. The GC’s job is managing them. Make sure he’s good at it before you sign.

YAF Development is a luxury general contractor in Los Angeles specializing in ground-up custom homes and high-end renovations. To discuss your project, contact us here.