Hire the wrong contractor for a rental unit and the fallout lands on you, not just the owner: a botched repair, an angry tenant, a lien registered against title, or an insurance claim that gets denied because the work wasn't done by anyone qualified to do it. Vetting a contractor in Canada comes down to five things you can verify before a single tool touches the property: proof of liability insurance, workers' compensation coverage, a real business address, a written scope of work, and references you can actually check. If a contractor is cagey about any of those, that's your answer.
Property managers juggling multiple units and multiple owners don't have the luxury of learning this the hard way once. Here's what to look for, why each flag matters specifically for rental property, and what to ask for before anyone signs anything.
Why This Matters More for Rental Property Than Your Own Home
When you're hiring on behalf of an owner, you're the one who picked the contractor, scheduled the access, and (often) approved the invoice. If a subtrade gets hurt on site with no workers' compensation coverage, or an unlicensed electrician's work causes a fire, questions go to whoever managed the job, not just whoever owns the building. Tenants also have a legal right to a safely maintained unit, so a contractor cutting corners isn't just a quality problem, it's a liability and habitability problem you inherit.
There's also a Canada-specific risk that catches property managers off guard: builders' lien legislation. In most provinces, a subcontractor or supplier who isn't paid by your general contractor can register a lien (in Quebec, a legal hypothec) directly against the property's title, even if the owner paid the general contractor in full. You want to know who's actually doing the work, and how they're being paid, before you find out the hard way.
The 10 Red Flags to Watch For
No proof of liability insurance. A legitimate contractor can produce a certificate of insurance on request, naming coverage limits and an expiry date, within a day or two. Someone who stalls, gives you a vague verbal assurance, or says their insurance is "through the guy I sub to" is telling you they can't show you anything.
No workers' compensation coverage. Depending on the province, this is WSIB (Ontario), WorkSafeBC, the WCB (Alberta and most other provinces), or CNESST (Quebec). Ask for a clearance letter or certificate confirming the business and its workers are covered and in good standing. If someone gets hurt on the job with no coverage, you and the owner can be pulled into the claim.
Cash-only, no invoice. A contractor who wants cash and won't give you a paper trail is usually avoiding tax reporting, and you have zero record of what was agreed to if the work fails or a dispute comes up later.
Demands a large deposit or full payment upfront. Some deposit for materials is normal on bigger jobs. A demand for the full amount, or a very large chunk, before any work starts is a classic pattern for contractors who don't intend to finish, or who are using your deposit to cover a previous job.
No fixed business address. A phone number and a truck with a magnetic sign aren't a business. If you can't find a registered business name, a business licence with the municipality, or even a consistent website, you have no way to track them down if something goes wrong.
Reluctant to pull permits. For work that requires a building, electrical, or plumbing permit, a contractor who suggests skipping it "to save time and money" is asking you to take on liability the permit process exists to catch, and it can jeopardize insurance coverage on the unit if something fails later.
Won't put the scope of work in writing. Verbal quotes with no detail on materials, timeline, or what's included invite scope creep and disputes. You want a written estimate or contract, even a simple one, before work starts.
No verifiable references or past work. Anyone can list two names as references. Ask for a property address you can drive by, or a recent job you can call the owner or manager about directly. A contractor who resists this, or only offers references from years ago, hasn't done recent comparable work, or isn't confident in how it holds up.
A quote dramatically lower than every other bid. If three quotes land in a similar range and one is far below the rest, find out why before you take it. It's often a sign of unlicensed labour, no insurance, corner-cutting on materials, or a plan to pad the invoice later with "unexpected" extras.
High-pressure tactics or same-day-only pricing. "I can only hold this price if you sign today" is a sales tactic, not a legitimate scheduling constraint. If a contract is being signed away from their regular place of business, many provinces also give the signer a short cancellation window under provincial consumer protection legislation, so a contractor who rushes you past reading the contract is working against a right you already have.
What to Ask For Before You Sign
Build this into your standard onboarding for any new contractor or subtrade, not just the ones that feel off:
- A certificate of insurance showing general liability coverage and an expiry date
- A workers' compensation clearance letter (WSIB, WorkSafeBC, WCB, or CNESST depending on province)
- Business registration or municipal business licence
- Trade certification where it applies (electricians, plumbers, gas fitters need their own licensing through provincial bodies; Red Seal certification is a useful marker for skilled trades even where it isn't mandatory)
- A written quote or contract with scope, materials, timeline, and payment schedule
- Two references you can actually contact, ideally including one recent job
Keep copies of all of it on file per contractor, not per job. If you manage several properties for the same owner, or several owners, you'll end up reusing the same trades repeatedly, so this only has to be done properly once per contractor.
How Plan@Job Fits Into This
Once you've vetted a contractor, the harder part is often staying organized across many jobs, many units, and many trades without losing track of who quoted what, who's actually on site, and what's been agreed with the owner. Plan@Job is built for exactly this: project and operations management for construction and property businesses, with each job split into stages showing scope, dates, status, and cost, so you can see what's agreed and what evidence has been shared without digging through email threads.
Daniel Reed, Plan@Job's AI Operations Manager, supports sharing eligible work with an existing vetted network and follows up on quotes and proposed dates so you're not chasing every contractor by hand. It's a tool for managing the process, not a replacement for confirming a contractor's insurance and licensing yourself. You can read more about how the AI staff work on the AI staff page, and see how job stages and evidence are tracked on the project management page.
FAQ
Do general contractors need a licence in Canada?
It depends on the province and the trade. Quebec requires a valid RBQ licence (Regie du batiment du Quebec) for most construction work. British Columbia has licensing requirements for builders of new homes. Ontario doesn't licence general contractors province-wide, but specific trades, electrical work through the ESA and gas work through the TSSA, require their own certification regardless of who's managing the job. Always confirm the current rules for your province and the specific trade involved rather than assuming one province's rules apply everywhere.
What is a construction lien and why should it matter to a landlord?
A builders' lien (or, in Quebec, a legal hypothec) lets an unpaid subcontractor or supplier register a claim against your property's title, even if the owner already paid the general contractor in full. It's one of the reasons it matters who a contractor is subcontracting to, and whether that general contractor has a track record of paying its subs on time. If a lien is registered, it can complicate financing, sale, or refinancing of the property until it's resolved.
Should I always take the lowest quote?
No. A quote well below the others on the same scope of work is a reason to ask more questions, not a reason to book the job. Compare quotes on what's actually included (materials, permits, cleanup, warranty on the work) before comparing the number at the bottom, and weigh it against the insurance, licensing, and reference checks above.