Open Engineering & Architecture Tenders in Ontario — 120 Live Today
Data updated August 17, 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
R26-239 - Engineering Services for: Dufferin Ave Watermain Replacement, Community of Chatham Township
Municipality of Chatham-Kent
Bids&TendersCloses September 2, 2026RFPQ-2026-254 - Wonderland Road Widening Environmental Assessment
City of London
Bids&TendersCloses September 14, 2026Architectural and Engineering Consulting Services for ENT Clinic Renovation – Charlton Campus
St. Joseph's Healthcare Hamilton
BiddingoCloses September 9, 2026This RFQ is for Structural Engineering and Demolition services on as required basis from qualified structural engineering and demolition contractors who are…
Fire Services
Toronto BidsCloses September 9, 2026326027 - Bridge 18 and 19 Rehabilitation (Township of Ramara)
Tatham Engineering Limited
Bids&TendersCloses September 3, 20262026-128-P - Engineering Services for Eighth Line Widening and Reconstruction from 10 Side Road to 15 Side Road
Town of Halton Hills
Bids&TendersCloses September 8, 2026P-126-26 - Completion of Architectural Services for the Renovation and Construction of a New Catholic Secondary School
Toronto Catholic District School Board
Bids&TendersCloses September 8, 20262026-70 - Consulting Engineering Services - Raw Sewage Pumping Station Assessment$
City of Brantford
Bids&TendersCloses September 2, 2026Roofing - Triennial Design Services
BonfireCloses September 21, 2026NRFP-79-26 - Consulting Services (Architect) for Assisted Rental Housing Development at Phase 1 of the Ontario Street Property, Milton, ON$
Region of Halton
Bids&TendersCloses September 22, 2026Main Branch Library Central Service Point Engineering, Demolition, Construction, & Installation Project
Welland Public Library
BiddingoCloses September 11, 20262026-403P - Architectural and Contract Management Services for Kitchen Renovations and Associated Works at McHardy Court, Project PL26-WP01
Region of Peel
Bids&TendersCloses September 8, 2026RFQ 2026-078 - CR 32 POPLAR SIDEROAD BRIDGE REHABILITATION ENGINEERING SERVICES
County of Simcoe
Bids&TendersCloses September 2, 2026RFQ 2026-079 - CR 169 TWO BRIDGES REHABILITATION (169235 & 169236), ENGINEERING SERVICES
County of Simcoe
Bids&TendersCloses September 10, 2026One (1) Senior Engineering Graduate
Department of National Defence (DND)
MERXCloses August 25, 2026
Closing within 7 days(18)
Two (2) Senior Life Cycle Management Specialist
Department of National Defence (DND)
CanadaBuysCloses August 17, 2026ENG-2026-15 P-20-26 - Consulting Services for Geotechnical Investigations for Bridge Street East – Church Street to Herchimer Avenue
City of Belleville
Bids&TendersCloses August 17, 2026Architectural and Engineering Consulting Services for Diagnostic Imaging Clinic - Kitchener-Waterloo
St. Joseph's Healthcare Hamilton
BiddingoCloses August 17, 2026Engineering Services for Cochrane Powerhouse Ventilation and Battery Storage
Ontario Northland Transportation Commission
MERXCloses August 18, 20262026-RFP-COT-09 - Engineering Services for the Municipal Class Environmental Assessment, Detailed Design, and Tendering of Ekins Lane Reconstruction and…
City of Thorold
Bids&TendersCloses August 18, 2026
More tenders in Ontario
The scope of this RFQ includes the supply, delivery, rental, relocation, warranty and purchase of storage containers for the Toronto Shelter and Support…
Shelter, Support & Housing Administration
Toronto BidsCloses September 14, 2026Request for Maritime Services
Department of National Defence (DND)
MERXCloses August 20, 2026Collaborative Interface and Prototyping Design Tool
Canada Revenue Agency (CRA)
MERXCloses September 14, 2026Microsoft Dynamics 365 Business Central ERP Implementation (A)
BonfireCloses September 15, 2026Photography Services
BonfireCloses August 28, 2026
Most active buyers
- Department of National Defence (DND)6 open tenders
- City of London4 open tenders
- Professional Engineers Ontario4 open tenders
- Department of Public Works and Government Services (PSPC)3 open tenders
- City of Clarence-Rockland3 open tenders
Engineering & Architecture tenders by city in Ontario
Other industries in Ontario
Get instant alerts for Engineering & Architecture tenders in Ontario
TenderScan watches every major Canadian tender source and emails you the moment a matching opportunity is posted. Set your keywords once — never miss a bid deadline again.
Start free