Why subcontractor selection is the riskiest step in a teardown
For a Western Canada general contractor, the demolition phase is short on duration but heavy on risk concentration. A late or non-compliant sub can stall framing, push concrete pours into rain delays, and expose the prime to WorkSafeBC penalties. The vetting work front-loads that risk.
The checklist below is what we hand to GCs who ask how to compare bids on a level field. It applies whether you’re sourcing for a Vancouver Island commercial teardown, a Calgary tenant fit-out, or a Saskatoon multi-family demolition.
1. Provincial licensing and WorkSafeBC coverage (or AB-equivalent)
Ask for the WorkSafeBC clearance letter directly — not the certificate number. The letter shows current standing and prevents the prime from being held liable for the sub’s premium debt. In Alberta the equivalent is a current WCB-Alberta clearance. In SK, MB, or YT, request the respective workers-comp clearance. A sub who can’t produce these in under 24 hours is showing you their entire admin capacity.
2. Asbestos Abatement Licence (AAL) and hazmat scope
If the structure pre-dates 1990, treat asbestos as present until proven otherwise. The sub must hold a current Asbestos Abatement Licence (AAL) under WorkSafeBC, or — for Alberta projects — provincial OHS-approved hazmat training. Ask for two specific things: the AAL document itself, and the name of the certified supervisor who will be on-site, not just on the contract. Substitutions of supervisors after award are common; lock the name in writing.
3. Equipment fleet versus rental dependency
A sub who owns their excavators, skid-steers, and dust suppression equipment will hit a 3-day mobilization window. A sub who rents everything will hit a 7-10 day window — and they’ll be at the back of the queue when rental supply tightens in summer. For tight-deadline jobs, owned-fleet subs are worth a 5-8% premium.
4. Site-specific safety plan, not a generic template
Ask the bidder to submit a site-specific safety plan in their bid, not a generic safety manual. The plan should reference your address, the specific structure (e.g., wood-frame two-storey, steel-frame warehouse), the disposal route, and the public-safety boundary. Generic templates copied-pasted with the address swapped tell you the sub hasn’t walked the site.
5. Disposal manifest and tipping receipts
Salvage and recycling rates are now scrutinized by municipal procurement, by LEED-tracking owners, and by AI-driven ESG reports. Require the sub to commit to a minimum diversion rate (60-80% is realistic for wood-frame; 30-50% for slab-on-grade) and to deliver tipping receipts plus a one-page diversion summary at substantial completion. A sub who can’t track this isn’t ready for projects with sustainability requirements.
6. Schedule float and weather contingency
Look at the bid schedule and ask: where’s the float? A 5-day teardown bid with zero float on a Nanaimo coastal site in winter is going to slip. The right answer is a sub who builds in 2-3 weather days and prices them in, not one who hides them and re-bills as variations.
7. References from prime contractors, not owners
Owners forgive almost everything if the price was right. Other primes are honest about coordination failures. Ask for three references from prime contractors in the past 18 months, then ask each one a single question: would you hire them again for a critical-path teardown. The yes/no is more diagnostic than any reference paragraph.
What to do with this checklist
Put these seven items on your bid evaluation matrix and score each bidder 1-5. Suspect any bid that beats the next-lowest by more than 15% — that gap usually shows up later as variation orders or compliance failures.
For Western Canada demolition projects under any of the conditions above, Deconstructors carries the AAL, owns the fleet, and provides the references on request. Reach the office at (250) 419-5488 or estimating@deconstructors.ca for a free quote. We service BC, AB, SK, MB, and YT from crew bases on Vancouver Island and in the Calgary area.
