Most general contractors do not build with their own hands anymore — they build through subcontractors. That makes subcontractor management one of the highest-leverage skills in the business, even though it rarely gets the attention that estimating or sales does. Get it wrong and you inherit someone else's delays, quality problems, and unpaid-bill disputes. Get it right and your subs become the reason jobs run smoothly. This guide lays out a practical system.
Why subcontractor problems become your problems
When a sub shows up late, does substandard work, or walks off a job mid-way, the client does not care whose payroll that crew was on — they hold you responsible, because you are the one they signed a contract with. The same is true for compliance: if a sub's insurance has lapsed or their WCB clearance is out of date, the exposure generally lands on the general contractor who let them on site.
Treating subcontractor management as an afterthought — a phone number in your contacts and a handshake — pushes all of that risk downstream to your business without you controlling any of it. A system fixes that.
Qualify subs before you hire them
The best time to solve a subcontractor problem is before you sign them. A short qualification step, done consistently, filters out the subs who will cost you the most later.
- Confirm current insurance and, where applicable, WCB or WorkSafe clearance before the first day on site
- Ask for references from recent, comparable jobs
- Check licensing or trade certification requirements for your province or state
- Start new subs on a smaller job before trusting them with a critical-path task
Put scope, price, and schedule in writing every time
A verbal agreement with a sub is a dispute waiting to happen, the same way an unpriced change order is. Every subcontract should spell out exactly what is included, what is excluded, the price, the schedule, and the standard of work expected — before any work starts.
Vague scope is where most sub disputes originate. If your subcontract says roughly what needs doing rather than precisely what needs doing, you and the sub will eventually disagree about which one of you owns the gap.
Track compliance documents without the scramble
Insurance certificates and WCB or Workers' Comp clearances expire, and they have a habit of lapsing in the middle of a job rather than conveniently between projects. If you are tracking this on a spreadsheet or, worse, from memory, you will eventually find out a sub was uninsured after something has already gone wrong.
- Keep insurance and compliance documents attached to each subcontractor's record, not scattered across email
- Set a reminder ahead of expiry dates rather than discovering a lapse after the fact
- Confirm current requirements for insurance, WCB/WorkSafe, or Workers' Compensation with your insurer or advisor, since they vary by province and state
Coordinate schedules so subs aren't waiting or colliding
A sub who shows up to a site that isn't ready for them costs you money twice — once in the wasted trip, and again in the goodwill you burn asking them to come back. The inverse is just as costly: two trades competing for the same space because nobody checked the schedule.
A shared, current schedule that both you and your subs can see removes most of this friction. When a job shifts, the people affected should see the change immediately, not find out when they arrive.
Handle sub invoices, holdbacks, and change orders cleanly
Paying subs correctly and on time is not just good practice — in provinces with prompt payment legislation, it may be a legal obligation with real deadlines attached. Confirm your specific obligations with a construction lawyer or accountant, since the rules differ by province and continue to evolve.
Change orders apply to subs the same way they apply to clients: no extra work starts without a priced, written change order that updates what you owe them. Holdback, where it applies in your jurisdiction, should be tracked clearly so it is released on schedule rather than forgotten.
How BuildersBridge helps
BuildersBridge keeps subcontractor and vendor documents attached to the project they belong to, so insurance certificates and compliance paperwork are there when you need them rather than buried in an inbox. Purchase orders and vendor bills tie sub costs to the job's live budget, so a sub invoice updates your actual cost and remaining budget the moment it is approved.
A dedicated subcontractor portal is on our roadmap. Today, subs and vendors are managed as part of the same project and financial records your team already works from, which keeps sub costs, documents, and schedule in one place instead of three.