Open Engineering & Architecture Tenders in Ontario — 274 Live Today
Data updated November 6, 2026
Ontario's municipalities are in a sustained capital-renewal cycle, and the design work comes to market first: consulting engineering for roads, water, and stormwater from buyers like the Region of Halton and the City of London, architectural services for schools and civic buildings, and geotechnical and environmental assessments ahead of construction.
Winning firms treat these as pipeline intelligence too — today's design mandate is next year's construction tender. Current open engineering and architecture mandates across the province are below.
Latest open tenders
C2026-51 - 2027 LANDSCAPE PLANTING DESIGN, CONTRACT ADMINISTRATION AND INSPECTION SERVICES VARIOUS REGIONAL ROADS Cities of Waterloo, Cambridge, and…
Region of Waterloo
Closes November 26, 202626-106 RFI - Watermean Leak Detection Services
City of Guelph
Closes November 19, 2026RFP2026-9 - NOIP - Corporate Facilities Building Condition Assessments, Electrical Load-Capacity, and Decarbonization Implementation Planning
Municipality of Clarington
Closes November 26, 2026T-598-2026 - Trunk sewer inspection program
Region of Durham
Closes December 1, 2026IWS/AMS/WRPE Stormwater Retrofit Master Plan - Stage 1
City of Ottawa
Closes November 26, 2026Neskantaga First Nation, Interim Water System Upgrades and Servicing Extension
S. Burnett & Associates Limited
Closes December 3, 2026Prequalification for General Contractor - Community Music Schools of Toronto
Diamond Schmitt Architects
Closes December 2, 2026PRC005577 - Natural Area Survey
City of Mississauga
Closes December 1, 2026C11-22-26 - Request for Proposals for Professional Consultant Services Required for the Citywide Flow Monitoring Program Implementation - Phase 2$
City of Hamilton
Closes December 3, 20262026-577I - REQUEST FOR INFORMATION ON MODERN METHODS OF CONSTRUCTION FOR THE REDEVELOPMENT OF 1725 DUNDAS STREET EAST, MISSISSAUGA, ONTARIO
Region of Peel
Closes November 24, 2026CA Services for Construction Contract 2026-2015
Engineering Services - Central Region
Closes December 9, 2026Construction Contract Administration Services for Contract 2026-5071
Engineering Services - Northeast Region
Closes December 4, 2026Queens Park Safety Monitoring Consultant Services
BGIS - Infrastructure Ontario
Closes December 3, 2026ELECTRICAL ENGINEERING SERVICES – (VOR-E)
McMaster University
Closes December 3, 2026ET025-270925 – ECCC Lake of the Woods Outlet Capacity Study
Department of Public Works and Government Services (PSPC)
Closes November 24, 2026
Closing within 7 days(59)
W0046-270098- Versatile Quadruped Robot
Department of Public Works and Government Services (PSPC)
Closes November 6, 2026D2026-31 - Whitby WSP rehabilitation and Lake Ontario monitoring system installation – Contract 2
Region of Durham
Closes November 6, 2026ARCHITECTURAL SERVICES (VOR-A)
Closes November 6, 2026CS2601-01 - Mountsberg Intake Refurbishment Study - CH
Conservation Halton
Closes November 6, 2026WS-2838A-A-26 - Request for Prequalification Watermain and Wastewater Main Replacements on North Service Road East, Eighth Line, Falgarwood Drive and Joshua’s…
Region of Halton
Closes November 6, 2026
More tenders in Ontario
Integrity Commissioner / Closed Meeting Investigation Services
Town of New Tecumseth
Closes November 30, 202626-TWM-36 Furniture for IHSC Lab
Closes December 1, 2026Legal Services for Employee and Labour Relations - Investigation & Restorative and Remediation Services
Government of Ontario
Closes December 7, 2026SQ-26-74 - Mechanical Contractors VOR
Simcoe Muskoka Catholic District School Board
Closes November 24, 2026RFP-2610271 - Property Tax Collection Services
City of Richmond Hill
Closes November 26, 2026
Most active buyers
- Department of Public Works and Government Services (PSPC)14 open tenders
- City of Vaughan7 open tenders
- City of Toronto7 open tenders
- Engineering & Construction Services6 open tenders
- City of Hamilton5 open tenders
Engineering & Architecture tenders by city in Ontario
Other industries in Ontario
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