Tenders by category and region

Construction tenders in Ontario

52 open tenders

Who buys construction in Ontario

Public Services and Procurement Canada2,269 contracts · $12.2B
National Defence3,922 contracts · $2.4B
Global Affairs Canada1,724 contracts · $458.1M
Royal Canadian Mounted Police214 contracts · $96.1M
Parks Canada118 contracts · $81.0M
National Research Council Canada187 contracts · $57.5M
Correctional Service of Canada400 contracts · $20.9M
Environment and Climate Change Canada133 contracts · $18.3M

Design and Construction of Up to Seven CAT II Accommodation Buildings – 5 CDSB Gagetown, Oromocto, NB

Defence Construction Canada — CA-CANADABUYS

Closing: 29 Oct 2026

Elevator Modification at 321 Bloor St, Woodsworth Residence

University of Toronto — CA-BONFIRE

Toronto, Ontario

Closing: 29 Oct 2026

Design-Build of Basic Military Qualifications Facilities at CFB Borden

Defence Construction Canada — CA-CANADABUYS

Borden, Ontario

Closing: 29 Oct 2026

Supply and Installation of Cooling Tower – London Research and Development Centre

Agriculture and Agri-Food Canada — CA-CANADABUYS

Closing: 29 Oct 2026

Structural Engineering Services for Housing Project at 1495 Heron Road

Canada Lands Company Limited — CA-CANADABUYS

Closing: 30 Oct 2026

Supply of Corrugated Steel Cover – Tender 23375-261160

about 1 month ago

Public Services and Procurement Canada — CA-CANADABUYS

Closing: 30 Oct 2026

Commissioning Oversight Services for National Defence Secure Campus (NDHQ Carling), Ottawa

about 1 month ago

Defence Construction Canada — CA-CANADABUYS

Closing: 01 Nov 2026

Supply, Delivery and Installation of Office Booth Units — Innovation, Science and Economic Development Canada (National Capital Region)

Innovation, Science and Economic Development Canada — CA-CANADABUYS

Closing: 02 Nov 2026

Clarinda Park Staircase Replacement – Galvanized Steel Stairs on Helical Piles, North York

City of Toronto — CA-TORONTO

Toronto, Ontario

Closing: 03 Nov 2026

State of Good Repair and Capital Upgrades at Multiple Toronto Police Services Facilities

City of Toronto — CA-TORONTO

Toronto, Ontario

Closing: 03 Nov 2026

Roof Replacement – National Research Council Canada Building M-20, Ottawa

about 1 month ago

National Research Council Canada — CA-CANADABUYS

Closing: 03 Nov 2026

Design and Construction of Strategic Tanker Transport Capability Main Operating Base (MOB-East) – 8 Wing Trenton, Ontario

about 2 months ago

Defence Construction Canada — CA-CANADABUYS

Trenton, Ontario

Closing: 03 Nov 2026

Refurbishment of Chemical Storage Sheds at Ontario Canadian Forces Bases (excluding National Capital Region)

Public Services and Procurement Canada — CA-CANADABUYS

Closing: 04 Nov 2026

Elevator Modification at New College III Residence, 42–45 Willcocks St

University of Toronto — CA-BONFIRE

Toronto, Ontario

Closing: 04 Nov 2026

Structural Engineering Design for Marsh Viewing Tower, Point Pelee National Park

Parks Canada — CA-CANADABUYS

Closing: 04 Nov 2026

Commissioning and Integrated Systems Testing for M55 Office Accommodations – National Research Council Canada

National Research Council Canada — CA-CANADABUYS

Closing: 05 Nov 2026

Replacement of Motor Control Centres at the Radiation Protection Bureau — 40-Week Contract (Canadian Suppliers Only)

Public Services and Procurement Canada — CA-CANADABUYS

Closing: 05 Nov 2026

Refresh of Furniture Services – VOR

University Health Network — CA-BONFIRE

Toronto, Ontario

Closing: 05 Nov 2026

Construction of Office Building at Dufferin Waste Management Facility — City of Toronto

City of Toronto — CA-TORONTO

Toronto, Ontario

Closing: 06 Nov 2026

Elevator Modernization at Ross Building

York University — CA-BONFIRE

Toronto, Ontario

Closing: 06 Nov 2026

Bank Stabilization and Erosion Mitigation at Fort William Historical Park, Thunder Bay

Ontario Ministry of Tourism, Culture and Gaming — CA-ONTARIO-OTP

Closing: 09 Nov 2026

Construction of Dunkip Park and Six Points Park Expansion – City of Toronto

City of Toronto — CA-TORONTO

Toronto, Ontario

Closing: 10 Nov 2026

Replacement of Steam Coils – Ottawa Laboratory Fallowfield (CFIA)

about 11 hours ago

Canadian Food Inspection Agency — CA-CANADABUYS

Closing: 10 Nov 2026

Annual Parking Garage Concrete Repairs at St. Joseph's Health Care London

Healthcare Materials Management Services — CA-ONTARIO-OTP

Closing: 12 Nov 2026

Rooftop HVAC Unit Replacement – 28-Week Project (Canadian Suppliers, Bid Due Nov 12, 2026)

Public Services and Procurement Canada — CA-CANADABUYS

Closing: 12 Nov 2026

Top construction suppliers by contract value in Ontario

Bgis Global Integrated Solutions CA2 contracts · $7.1B
Bgis Global Integrated Solutions Canada1 contract · $2.6B
EllisDon Corporation (Ottawa)1 contract · $1.0B
Ellisdon Corporation19 contracts · $849.5M
Maple Reinders Constructors Ltd.4 contracts · $554.2M
PCL Constructors Eastern Inc -1 contract · $410.6M
MCW Custom Energy Solutions Ltd.6 contracts · $326.5M
Pomerleau Inc.3 contracts · $159.5M
Gami Ingeniería E Instalaciones1 contract · $158.0M
Ameresco Canada Inc.4 contracts · $127.0M

See the full supplier ranking

Recently awarded construction contracts in Ontario

Office Building Contract Awarded to 2287648 Ontario Inc. by Innovation, Science and Economic Development Canada2287648 Ontario Inc. · Innovation, Science and Economic Development Canada · $40K · 4 Feb 2019
Electrical Contract for Office Buildings Awarded to Carleton Electric LtdCarleton Electric Ltd · Innovation, Science and Economic Development Canada · $99K · 1 Nov 2018
Residential Building Construction Contract Awarded to Atlantic Mechanical by National DefenceAtlantic Mechanical · National Defence · $63K · 16 May 2018
Residential Building Construction Call-Up for National DefenceCoastal Restoration · National Defence · $77K · 15 May 2018
Construction of Industrial Buildings for National DefenceTJ Nolan Construction · National Defence · $41K · 15 May 2018
Construction of Industrial Buildings for National DefenceTJ Nolan Construction · National Defence · $34K · 15 May 2018
Industrial Building Construction Call-Up Against Standing Offer for National DefenceAdvanced Energy Management Ltd · National Defence · $13K · 15 May 2018
Award of Industrial Buildings Contract to Canadian Maritime Engineering Ltd by National DefenceCanadian Maritime Engineering Ltd · National Defence · $13K · 14 May 2018
Repair and Maintenance of Other Buildings for the Canadian Space AgencyConcrete Fusion Inc. · Canadian Space Agency · $12K · 25 May 2018
Supply of Building Systems Products to Agriculture and Agri-Food CanadaJohnson Controls Systems Products · Agriculture and Agri-Food Canada · $11K · 14 May 2018

See more awarded contracts

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7:00 am

3 new cleaning tenders in Ontario

Cleaning services for council buildingsInfrastructure · Municipality · Closes in 12 days

Window and facade cleaning, hospital sitesHealth & Medical · Health authority · Closes in 19 days

Waste collection for depot sitesEnergy & Environment · Transport agency · Closes in 23 days

From your alert: Cleaning, Ontario

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