Open Professional Services Tenders in Ontario — 83 Live Today
Data updated August 17, 2026
Consulting, audit, legal, planning, and advisory mandates appear across every tier of Ontario's public sector — federal departments (PSPC, DND) via CanadaBuys, provincial agencies via the Ontario Tenders Portal, and a long tail of municipalities like Markham and the regional governments via Bids&Tenders.
It's a market where scope varies wildly, from single-study engagements to multi-year vendor-of-record arrangements; watching the flow beats checking portals. The open mandates are listed below with buyers and closing dates.
Latest open tenders
197-R-26 - Consulting Services for Park Development Guidelines, Details and Specifications$
City of Markham
Bids&TendersCloses September 11, 2026Architectural and Engineering Consulting Services for ENT Clinic Renovation – Charlton Campus
St. Joseph's Healthcare Hamilton
BiddingoCloses September 9, 2026RCF-REC-26-36 - Consulting Services to Update the Ten-Year Recreation, Culture & Parks Plan
City of Niagara Falls
MERXCloses September 3, 2026RFP - RCF-REC-26-36 - Consulting Services to Update the Ten-Year Recreation, Culture & Parks Plan
City of Niagara Falls
Bids&TendersCloses September 3, 2026Invitation to Qualify - Supervision Modernization Program (SMP)
Department of Public Works and Government Services (PSPC)
CanadaBuysCloses September 10, 2026External Audit Services
BonfireCloses September 8, 2026Consulting Services for Equity, Diversity & Inclusion
BonfireCloses September 9, 2026External Audit Services
Conestoga College ITAL
MERXCloses September 8, 2026TASK BASED INFORMATICS PROFESSIONAL SERVICES (TBIPS)
Courts Administration Service (CAS)
CanadaBuysCloses September 1, 20262026-0043 - LMCH RFP 2026-0043 Strategic Plan Consulting Services
London & Middlesex Community Housing
Bids&TendersCloses September 14, 202601 - Legal Services Request for Proposal
bids&tenders
Bids&TendersCloses September 11, 2026CTY-PW-2026-7-b - Professional Services for the Replacement of the Inlet Bay Culvert on McGillivray Road (County Road 9)
County of Haliburton
Bids&TendersCloses September 1, 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, 2026RFPQ26-297 - Small Business Training and Advisory Services$
City of Vaughan
Bids&TendersCloses September 11, 2026Professional Engineering Consulting Services Minnehaha Bay Wharf Design
Municipality of West Nipissing
MERXCloses September 15, 2026
Closing within 7 days(19)
ENG-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, 20262026-EXTAUDIT - External Auditing Services
Brightshores Health System
MERXCloses August 18, 2026P-330-26 - Consulting Services for Media Strategy and Buying$
Region of Halton
Bids&TendersCloses August 18, 2026Financial Audit Services
Professional Engineers Ontario
BiddingoCloses 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 Public Works and Government Services (PSPC)5 open tenders
- Region of Halton3 open tenders
- Department of Employment and Social Development (ESDC)3 open tenders
- Department of National Defence (DND)3 open tenders
- Department of Indigenous Services (ISC)2 open tenders
Get instant alerts for Professional Services 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