Defence Construction Canada / Construction de Défense Canada - Ottawa, Ontario
**Tender overview:** Defence Construction Canada is seeking proposals from design-build teams for the design and construction of the Strategic Tanker Transport Capability (STTC) Main Operating Base—East at 8 Wing Trenton, Ontario. The project’s rough order of magnitude is approximately **$228 million**; this is an estimate, not necessarily the contract value. **Closing date:** October 20, 2026, at 2:00 p.m. The proposal must be submitted through the MERX Electronic Bidding System. Although the listing identifies Ottawa as the location, the actual project site is 8 Wing Trenton, Ontario. **Potentially relevant businesses:** This appears most relevant to major construction contractors or established design-build teams able to coordinate substantial architectural, engineering, infrastructure, and defence-related work. The listed roles include architects; sustainable-design specialists; structural, mechanical, electrical, civil/municipal engineers; building information modelling specialists; and subject-matter experts in cargo handling and passenger processing. The full RFP should be reviewed for all required disciplines and experience. **Important requirements and conditions:** - The selected contractor will be required to hold a valid **SECRET Facility Security Clearance (FSC)** issued through PSPC’s Contract Security Program. - A non-mandatory site visit is scheduled for **September 23, 2026, at 11:00 a.m. local time**, meeting at the parking lot at 6 Northstar Drive, Trenton, Ontario, K8V 5P8. - Questions must be sent only to the point of contact identified in the official advertisement. Sending questions elsewhere could result in disqualification. - The procurement is subject to the Canadian Free Trade Agreement, CETA Chapter 19, and the WTO Agreement on Government Procurement. This opportunity appears potentially suitable for a large prime contractor, design-build consortium, or specialized firm seeking a subcontracting or teaming role. The information provided is not enough to determine whether any particular business qualifies or meets the mandatory requirements. Review the complete RFP, amendments—especially Amendment No. 1 concerning security requirements—and MERX submission instructions before deciding whether to bid. Always verify the closing time, eligibility conditions, clearance requirements, evaluation criteria, and any mandatory forms in the official notice: https://www.merx.com/public/solicitations/4084822509/abstract?language=EN.