Site & Design | Toronto Green Standard
The Toronto Green Standard and the As-of-Right Multiplex
The Toronto Green Standard sets sustainability requirements for new development, with a mandatory Tier 1. The detail that matters for small infill is how it attaches: TGS is applied through the planning-approval process. So the real question for a multiplex is whether your project has a planning application for TGS to hook onto — and an as-of-right build on a building permit alone usually does not.
Key Takeaways
- ✓Tier 1 is mandatory, but applied through the planning-approval process (Site Plan Approval).
- ✓The low-rise V4 standard (under four storeys) took effect May 1, 2022.
- ✓An as-of-right multiplex on a building permit alone generally would not be pulled into TGS.
- ✓That last point is a reasoned inference — confirm with City Planning for your project.
Tier choice moves the cost per square foot. Put your own cost figure into the model , which starts from the Altus Group range for wood-framed multi-residential in the GTA.
How TGS Connects to a Multiplex
TGS applies through planning approval
Tier 1 of the Toronto Green Standard is mandatory, but it is applied through the planning-approval process — most directly Site Plan Approval. The hook for TGS is a planning application, not a building permit on its own.
There is a low-rise version
For low-rise buildings under four storeys, the City maintains a dedicated TGS version. The current low-rise standard (Version 4) took effect on May 1, 2022, and is the one a small multiplex would be measured against if TGS applied.
An as-of-right multiplex usually skips the planning stream
A compliant multiplex on a building permit alone has no rezoning, no Official Plan amendment, and no Site Plan Approval. Because TGS attaches through that planning process, a permit-only multiplex generally would not be pulled into TGS. We present that as a reasoned inference — confirm it with City Planning for your project.
Read This Before You Rely On It
The published facts are clear: Tier 1 of the Toronto Green Standard is mandatory, it is applied through the planning-approval process, and the low-rise Version 4 standard took effect May 1, 2022. What is an inference — our reading, not a quoted City rule — is the conclusion that an as-of-right multiplex built on a building permit alone, with no Site Plan Approval, would not be pulled into TGS.
The logic is straightforward: if TGS attaches through a planning application, and your project has no planning application, there is nothing for it to attach to. But applicability can be project-specific, and the City can change how the standard is administered. Before you treat TGS as not applying to your multiplex, confirm it with City Planning for your exact approval path.
Best For
- ✓ As-of-right multiplexes on a building permit alone, where TGS likely does not attach.
- ✓ Owners who confirm the TGS trigger with City Planning before scoping the design.
- ✓ Projects that adopt efficiency measures voluntarily for operating cost and rentability.
Usually Fails When
- ✕ A project assumes TGS never applies, then a Site Plan Approval pulls it into Tier 1.
- ✕ The inference on this page is treated as a published exemption rather than a reasoned read.
- ✕ The low-rise V4 standard is missed on a project that does require a planning application.
What To Verify Before Spending Money
- → Whether your approval path includes a planning application that carries TGS.
- → With City Planning, whether Tier 1 applies to your specific multiplex.
- → Which TGS version (low-rise V4) your building would be measured against if it applies.
Where to Go Next
Frequently Asked Questions
Does the Toronto Green Standard apply to a fourplex?
Is the Toronto Green Standard mandatory?
What is the low-rise version of TGS?
If my multiplex needs a variance, does that pull it into TGS?
Should I build to TGS even if it is not required?
Official Sources Referenced
Related reading
Longer pieces on the same question.
Put your own cost per square foot into the model
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