Open Construction Tenders in Ontario — 237 Live Today
Data updated September 20, 2026
Ontario's construction stream is the deepest in the country: over a hundred open opportunities is typical, spanning York Region and Peel road programs, school builds from boards like the District School Board of Niagara, hospital renewal, and the federal work Defence Construction Canada and PSPC tender across the province.
Most municipal work posts to Bids&Tenders and Biddingo, provincial and broader-public-sector projects to MERX and the Ontario Tenders Portal, and federal projects to CanadaBuys — TenderScan folds them into the single list below, with Toronto's own market on its dedicated page.
Latest open tenders
B560 AHU/Class III Generator Construction Project
BonfireCloses September 21, 2026Morrow Lake and Doorely Creek Bridge Replacement
Government of Ontario
Ontario TendersCloses October 19, 20262172 & 2174 Gerrard Street East Renovation
WoodGreen Community Services
BiddingoCloses October 16, 2026Edward St. Resurfacing
Town of Prescott
BiddingoCloses October 1, 2026Construction services for removal of existing asphalt, resurfacing and grading of the first 2.5km of Pelican Falls Road, 700m of Sioux Mountain Road and the…
Government of Ontario
Ontario TendersCloses October 12, 20262026-22 - Miscellaneous Milling and Paving - Various County Roads
County of Lambton
Bids&TendersCloses October 1, 2026RFT PW-EAM-26-65 - Port Dover Community Centre & 12 Gilbertson Parking Lot Construction
Norfolk County
Bids&TendersCloses October 6, 2026LGC27-021T - Roof Replacement of Roof Areas A, A1, B and Installation of Two New Access Ladders (between C and D, and D and E1) at Blaydon PS TR-25-0975
Toronto District School Board
Bids&TendersCloses October 6, 2026DM27-018T - Installation of Roof Anti- Climb Fences at Gordon A. Brown MS
Toronto District School Board
Bids&TendersCloses October 8, 2026RFPQ-2026-291 - General Contractor Pre-Qualification for Pottersburg-Vauxhall Interconnecting Pumping Station Upgrade
City of London
Bids&TendersCloses October 19, 2026Edward St. Resurfacing
Corporation of the Town of Prescott
MERXCloses October 1, 2026Capital Labs - RFQ-04B - Masonry - B301, B310, B330
PCL Constructors Canada Inc.
MERXCloses October 8, 2026Welland International Flatwater Centre Asphalt Renewal
City of Welland
BiddingoCloses October 2, 2026CFHA - HSC Trenton - Kitchen and Bathroom Renovations Services
Department of National Defence (DND)
MERXCloses October 1, 202626-083 RFPQ - Prequalification of General Contractors for DTIRP Phase 2 Part A
City of Guelph
Bids&TendersCloses October 14, 2026
Closing within 7 days(60)
NG26-15 Clothier St E-Sidewalk, Storm and Traffic Calming Improvements
Municipality of North Grenville
MERXCloses September 21, 2026P11PI26482-G85-446-Roofing - Triennial Design Services
Toronto Transit Commission - PCM Capital
MERXCloses September 21, 2026Construction Management Services 805 Wellington St. W
CreateTO (Build Toronto, TPLC)
MERXCloses September 21, 2026Construction Services for Campground Development within Fitzroy Provincial Park
Ontario Shared Services
MERXCloses September 21, 2026Tender 21737 Namewaminikan River Bridge Rehabilitation and Maintenance Project
Government of Ontario
Ontario TendersCloses September 21, 2026
More tenders in Ontario
Request for Quotations for Occupational Therapy Services for the City of Toronto's Seniors Services and Long-Term Care Division
Seniors Services and Long-Term Care
Toronto BidsCloses October 16, 2026The City of Toronto invites qualified suppliers to submit quotations for the non-exclusive supply of all labour, materials and equipment necessary by an…
Toronto Paramedic Services
Toronto BidsCloses October 15, 2026W6369-22DE11_A - Professional Services Support Contract (PSSCIII)
Department of Public Works and Government Services (PSPC)
MERXCloses October 12, 2026B560 AHU/Class III Generator Construction Project
BonfireCloses September 21, 2026Simulated Battlefield Training Support Services RFP-54
Department of Public Works and Government Services (PSPC)
CanadaBuysCloses September 24, 2026
Most active buyers
- Department of Public Works and Government Services (PSPC)16 open tenders
- Region of Peel12 open tenders
- City of Toronto11 open tenders
- Defence Construction Canada - Ontario Region9 open tenders
- Corporate Real Estate Management8 open tenders
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