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FREE TOOL · ONTARIO O. REG. 506/18 · TORONTO CHAPTER 367
Does my building have to report its energy use?
Answer three questions to see which reporting rules apply, your deadlines, and whether data verification is required. Rules checked October 27, 2026.
YOUR OBLIGATIONS
Have us file for youGeneral guidance only. Ontario's rule covers commercial, multi-unit residential, institutional and certain industrial buildings; some buildings qualify for exemptions. Publicly owned buildings report under separate public sector rules. Use gross floor area, not leasable area.
The rules behind the checker
| Gross floor area | Ontario EWRB (O. Reg. 506/18) | City of Toronto (Chapter 367) | Data verification (Ontario) |
|---|---|---|---|
| 100,000 sq ft and up (9,290 m²) | Report by July 1 each year | Report by July 2 each year | First year it applies, then every 5 years |
| 50,000 to 99,999 sq ft (4,645 to 9,290 m²) | Report by July 1 each year | Report by July 2 each year | Not required |
| 10,000 to 49,999 sq ft (929 to 4,645 m²) | Not required | First report by July 2, 2027 | Not required |
More detail: What is EWRB? · Ontario EWRB vs Toronto reporting · Data verification · How Ontario buildings score