Two parts of an Ontario public tender get skimmed more than they should: the site meeting and the plan-taker list. One can knock you out before you price a single fixture. The other tells you who you're up against, and who might need an electrical sub.
A missed mandatory meeting is a rejected bid
When a buyer calls a site meeting mandatory, it means it. Markham's General Terms and Conditions for contractors say that if a quotation calls for a mandatory site meeting, every bidder must attend on the date and time indicated and register with the City's representative. Failure to attend and register means the bid is rejected as non-compliant.
Other municipalities write it the same way. North Bay's purchasing by-law schedule of bid irregularities lists "failure to have a representative in attendance and registered at a mandatory site meeting" with one response: rejection. The Town of Essex's procurement by-law says only bidders who attended may submit, and bids from anyone who didn't will be disqualified.
Note the word "registered." Showing up isn't enough if you don't sign in with the buyer's representative.
Why buyers hold them
Essex defines a mandatory meeting as one where the information "cannot practically be obtained by written means" and is needed to bid. Thunder Bay's Information to Tenderers template gives the usual reasons: difficult site conditions, or work that can't interfere with operations, such as in a hospital or a high-security area.
For electrical work, that's often where the real cost hides: tie-ins to live gear, after-hours shutdowns, access limits, or an existing service that doesn't match the drawings. Thunder Bay's template also says tenderers must visit the site and can't claim later that they misunderstood site conditions, whether or not a meeting is mandatory.
Where to find the meeting details
On bids&tenders portals, each bid page has a "Meeting Locations" section. On the pages we checked on Wednesday, October 21, 2026, including Mississauga's PRC005612 outdoor pools tender, meeting times and locations were only shown to invited bidders and registered plan takers. If you don't register, you may not see the meeting at all until you open the documents.
So register early, and put the meeting in your calendar the same day as the closing and question deadlines. If you can't make a mandatory meeting, that's your no-bid decision made for you.
What the plan-taker list tells you
Plan takers are the firms that registered for a bid. Oshawa's Bid Submission Procedure defines them that way, and says addenda notices go out by email to all plan takers. Thunder Bay and Markham both put the onus on the bidder to register as a plan taker to get updates.
Once you're registered, the list is useful in three ways:
- Competition. A long list on a small job usually means tight pricing. A short list on a specialized scope may mean room to win.
- Sub opportunities. On a general contractor (GC) job with an electrical piece, the plan-taker list shows which GCs are pricing it. Those are the firms to call with a sub price.
- Timing. Lists grow as closing gets closer. A list that jumps tells you the job is getting attention.
Mississauga's PRC005612 is a live example. It covers exterior lighting at six outdoor pools, with mechanical renewal at three, under a GC. Bid Scout's morning briefs, which pull bids&tenders data, counted 4 plan takers on Monday, October 19, and 20 on Wednesday, October 21. The bid page shows questions close Wednesday, October 28 at 2:00 PM, and bids close Friday, November 6, 2026 at 2:00 PM. That's a window to get your lighting price in front of the GCs on the list.
A quick pre-bid routine
- Register as a plan taker the day a bid looks worth pricing.
- Check the meeting section and the documents for a site meeting. Note whether it's mandatory.
- If it's mandatory, send someone who can read the electrical scope, and make sure they register with the buyer's representative.
- Read the plan-taker list. Decide whether you're priming or subbing, and call the GCs early if you're subbing.
- Check the list again a few days before closing.
If the buyer's documents and this post ever disagree, the documents win.
Sources
- City of Markham: General Terms and Conditions, Contractors
- City of North Bay: By-law 2019-54, Schedule B, Bid Irregularities
- Town of Essex: Procurement By-law
- City of Thunder Bay: Information to Tenderers (Section 00100)
- City of Oshawa: Bid Submission Procedure
- City of Mississauga PRC005612, Mechanical and Lighting Renewal at Six Outdoor Pools (bids&tenders)
- Plan-taker counts for PRC005612: Bid Scout's October 19 and October 21, 2026 morning briefs, from bids&tenders data. The public bid page shows the list only to registered plan takers.