GSIN codes, explained
A GSIN — Goods and Services Identification Number — is the code the Government of Canada uses to classify what it buys. Every CanadaBuys tender carries one. This page explains the GSIN structure and links each group we cover to its live, biddable open-tender feed.
Find open tenders by GSIN group
Pick a GSIN group to jump to its live, de-duplicated feed of biddable government tenders:
S202— Cleaning & janitorial services → open cleaning tendersS210— Housekeeping & custodial services → open cleaning tenders
We list only GSIN groups we can back with a live tender feed. More groups are added as coverage for each industry comes online — we don’t publish codes we can’t connect to real open tenders.
Open cleaning tenders right now
- 2026 City of Kenora CCTV Pipe Inspection and Cleaning Services — City of Kenora · closes 2026-06-25
- REQUEST FOR BIDS FOR THE PROVISION OF JANITORIAL SERVICES FOR DOUBLE STACK — Toronto Transit Commission - PCM Operating · closes 2026-06-26
- Janitorial Services at Downsview Park — Parc Downsview Park Inc · closes 2026-07-07
- 26-7899-RFP - Custodial Operations for Cambridge Joint Use Facility (OECM RFSQ #2025-484, Second Stage) — Wrdsb · closes 2026-07-07
- EJ196-260830 Janitorial Cleaning Services Canadian Forces Station Leitrim — Department of Public Works and Government Services (PSPC) · closes 2026-07-08
New tenders by GSIN group, weekly
Get the open cleaning tenders closing soon — plus who just won what — in one weekly email. Free.
Questions
What is a GSIN code?
A GSIN (Goods and Services Identification Number) is the code the Government of Canada uses to classify what it buys. Each open tender on CanadaBuys carries one or more GSINs describing the goods or services sought. Suppliers use GSINs to register interest and to filter for the tenders relevant to them.
How is a GSIN code structured?
A GSIN begins with a letter that signals the category — for example S for services, N for goods (the federal supply-classification families), and D for construction and architecture/engineering. The digits that follow narrow it to a specific class. Cleaning and janitorial services, for instance, fall under the S2xx services groups.
How do I find government tenders for a GSIN?
Map the GSIN to the kind of work it describes, then look at the open tenders for that work. This page links each GSIN group we cover to its live, biddable open-tender feed on Wonable — so you go from a code straight to the contracts you can actually bid on today.
What's the difference between a GSIN and a NAICS code?
A GSIN classifies what the government is buying on a specific tender; a NAICS code classifies what your business does. They overlap but are not identical — a single NAICS supplier may bid across several GSINs. Wonable matches tenders to you on the underlying work, not on a single code.