You landed the bigger job. Now you need more hands than your crew has, and you need them fast, without hiring someone who ghosts you halfway through the project or leaves you holding a liability you didn’t sign up for.
When It’s Time to Bring in a Subcontractor
If you’re turning down work because your crew is stretched, or a project needs a skill your team doesn’t have (electrical, HVAC, specialty finishes), that’s usually the signal. Subcontractors let you say yes to bigger or more varied construction jobs without carrying the overhead of full-time employees year-round. The trade-off is that you’re now managing a relationship with someone who isn’t on your payroll, which brings its own paperwork and oversight.
Subcontractors by Trade, and by Tier
The practical way to think about subcontractors is by trade: electrical, plumbing, HVAC, framing and carpentry, drywall, roofing, concrete and masonry, painting, flooring, and landscaping or sitework. This is how most residential and light-commercial GCs actually plan who they need to call.
The other distinction worth knowing is by tier, since it’s the one that shows up in contract and lien law. A subcontractor you hire directly is a first-tier subcontractor. If that sub brings in their own subcontractor (say, your framing sub hires a separate crew for spray foam insulation), that second business is a sub-subcontractor, or a lower-tier sub. This matters more than it sounds like it should: lien rights, prompt payment rules, and in some states your own liability for unpaid wages can turn on which tier someone sits at — more on that in the payment section below.
Where to Find Subcontractors for Construction Work
A few channels tend to produce better results than a generic job posting:
- Your existing network. Ask other GCs, your suppliers, and your material reps. Suppliers, in particular, see who’s reliable because they deal with the same subs across multiple job sites.
- Trade associations and licensing boards. Local chapters of trade groups (electrical, plumbing, masonry) often maintain member directories, and your state’s contractor licensing board can confirm a sub’s license is active before you even speak to them.
- Subcontractor-matching platforms. A growing number of online directories connect general contractors with vetted subs by trade and region. Useful for filling a one-off skill gap, though you’ll still need to run your own vetting on anyone you find this way.
- Past crew and referrals from other subs. A subcontractor who’s done good work for you before, or been recommended by one, is a lower-risk hire than someone cold.
The steps below apply whether you’re hiring subcontractors for a construction project or for a smaller specialty job, like cleaning or finish work. The trade changes; the vetting and paperwork don’t.
Vetting a Subcontractor Before You Hire Them
Don’t skip this step because a job is on a deadline. A bad hire costs more time than the vetting does.
- License. Confirm it’s active and covers the scope of work; most state licensing boards let you check this online in minutes.
- Certificate of insurance (COI). Ask for proof of general liability and, if they have employees, workers’ compensation. Request that your business be added as an additional insured on the policy for the duration of the job.
- Safety record. OSHA’s establishment search lets you look up a company’s inspection and violation history by name and location, worth a quick check for anyone doing higher-risk trade work.
- References and past work. Ask for two or three recent jobs similar in scope to yours, and actually call them. Ask specifically about deadlines and communication, not just quality of work.
- Capacity. A sub who’s overcommitted will slow your job down the same way an overstretched crew slows down yours. Ask what else they have on their schedule before you commit.
For the first job or two with a new sub, it’s worth staying closer to the work than you would with someone proven, checking in more often and reviewing progress directly, before handing off full oversight.
Subcontractor vs. Employee: Get the Classification Right
This is where a lot of contractors get burned, not through bad intent, but through not knowing the rule exists.
The Federal Tests
The IRS doesn’t let you decide someone’s a subcontractor just by calling them one.
It looks at three things: behavioral control (do you direct how, when, and where the work gets done, or just the end result?), financial control (do they use their own tools, set their own rates, and bear the risk of profit or loss?), and the type of relationship (is there a written contract, and is the work ongoing or project-based?). Full details of the federal test are in IRS Topic 762.
The State-Level Tests
The federal test isn’t the only one that applies.
Several states, California among them, use a stricter “ABC test” for state-law purposes such as unemployment insurance and wage claims, in which a worker counts as an independent contractor only if they meet all three conditions of the test.
It’s entirely possible to pass the federal test and still fail your state’s test, so if you’re hiring in a state that uses the ABC test, it’s worth confirming your classification holds up under both. California’s version is laid out on the state labor department’s site.
Why Getting It Wrong Is Expensive
Genuine subcontractors set their own methods, often work for multiple GCs, and typically use their own tools and equipment.
Misclassification can mean back taxes, penalties, and unpaid wage exposure if it’s ever challenged. When a hire is genuinely borderline, filing Form SS-8 gets you a formal IRS determination rather than a guess.
Read more: How to Issue a 1099 Form: Step-By-Step Guide.
What Belongs in a Subcontractor Agreement?
A verbal agreement and a handshake aren’t enough once real money and a real deadline are on the line. At a minimum, a subcontractor agreement should cover:
- Scope of work. Specific enough that “done” has an obvious meaning. Vague scope is the most common source of disputes.
- Timeline. Start date, milestones, and completion date, with a note on what happens if delays are outside the sub’s control.
- Payment terms. How much, on what schedule, and what triggers each payment (more below).
- Insurance requirements. Restate the COI requirement in writing, not just as a one-time check.
- Indemnification. A clause that protects you from liability for damages or injuries caused by the sub’s own negligence.
- Change order process. How scope changes get documented and priced once work is underway.
- Site cleanup. Who’s responsible for debris removal, an easy thing to leave unstated and then argue about.
- Termination conditions. Specific triggers, missed deadlines, safety violations, refusing contracted work, not just a vague “either party may terminate.”
If you’re weighing how to price a subcontractor’s work or what a fair rate looks like for your market, that’s covered in more depth in our guide to pricing subcontract work. This piece focuses on finding and appointing the right person rather than what to pay them.
Paying Subcontractors Correctly
Get the paperwork done before the first payment, not after:
- Collect a W-9 Before They Start Work: It confirms their tax ID and legal name, and you’ll need it at tax time regardless of how much you end up paying them.
- Know the 1099 Threshold: As of 2026, you’re required to issue a Form 1099-NEC to any subcontractor you pay $2,000 or more in a calendar year, a recent change (the threshold was $600 for years before this), so don’t rely on older advice that still quotes the old figure.
- Set a Payment Schedule Tied to Milestones: A common approach for smaller jobs is half up front and half upon completion; larger jobs often split payments into three or four milestones as work progresses. Whatever structure you use, put it in writing.
- Pay on Time, and Know What Happens if You Don’t: Beyond the relationship damage, many states have prompt payment laws with interest and penalties for late payment, and an unpaid subcontractor can file a mechanics lien against the property itself, which can complicate financing or a future sale. In a few states, including California, you can be held directly liable for a subcontractor’s unpaid wages to their own employees, at any tier, even ones you never contracted with directly. It’s worth knowing your state’s rules here, not just your subs.
Keeping Subcontractors on Track Once They’re Hired
Hiring the right sub is half the job; the other half is not losing track of them once you’ve got two, three, or five subcontractors moving across different sites.
Keep Your Own Jobs and Visits Organized as the Crew List Grows
The more subs you’re juggling, the easier it is to lose track of who’s starting where and when. Keeping your jobs, estimates, and scheduled visits together in one place, rather than split across a notebook and three apps, means fewer “wait, I thought I was starting Tuesday” conversations on your end.
Keep every job and visit in one place with our Jobs & Scheduling solutions.
Give Every Sub the Job Details They Actually Need
Keeping client and job details together makes it faster to loop a sub in on exactly what a job needs, the site, the scope, and prior notes, without repeating yourself over email every time someone new starts on a project.
Learn more about our Client Management tools.
Don’t Let a Bigger Workload Mean Missed Leads
As you take on more jobs and more subs at once, you’re also harder to reach. A tool that answers the calls you can’t get to while you’re on a roof, and logs who called and why, means a busier season doesn’t cost you the next job.
Never miss a job again with our powerful AI Receptionist.
