CRA Substantial Renovation Rules and GST/HST Obligations
Renovating a home can be a major investment but under the CRA substantial renovation rules, it can also bring major tax surprises if you’re not careful. In Canada, the sale of a substantially renovated residential property is typically subject to GST/HST, even if the property was originally exempt.
But what exactly counts as a “substantial renovation” under the law? The answer can make or break your bottom line and it’s something the CRA audits aggressively. A Toronto tax lawyer can help you understand whether GST/HST applies to your renovation project before you’re reassessed.
GST/HST Substantial Renovations and CRA
Under subsection 123(1) of the Excise Tax Act, a renovation is “substantial” if 90% or more of the existing building, not including certain structural elements, is removed or replaced. These excluded elements include the foundation, external walls, interior supporting walls, floors, roof, and staircases.
This means you can gut a home to the studs, replace every room, and still trigger GST/HST even if the shell stays intact.
How the CRA Measures the 90% Threshold
The CRA applies the “all or substantially all” test by comparing either:
- The square footage of renovated areas; or
- The number of rooms renovated (excluding utility rooms and closets).
In either case, if the renovated portion exceeds 90% of the interior space of the original home (excluding the exempted structural elements), you may be required to charge GST/HST on the eventual sale.
Even if you weren’t intending to flip the property, that doesn’t automatically exempt you. What matters is how extensive the renovation was, and how the property is used and sold.
What About Additions?
In some cases, adding a major new section to a property, like a second story or large rear extension, may contribute to a finding that the home was substantially renovated. But a simple bump-out or basement suite likely won’t meet the threshold on its own.
Why It Matters
If you meet the test for substantial renovation:
- You may be required to register for GST/HST.
- You could owe GST/HST on the full sale price of the home.
- If you fail to collect GST/HST and CRA finds out later, you could be assessed for the tax plus penalties and interest. A Toronto tax lawyer can help reduce or dispute those assessments if you’re already under audit.
Many property owners only learn this after being audited or reassessed. By then, it’s often too late to adjust the sale price or fix the paperwork.
Kirshen Tax Law Can Help
At Kirshen Tax Law, we help clients across Canada respond to CRA audits and assessments involving real estate, GST/HST, and substantial renovations. Whether you’re planning a major renovation or dealing with a notice of assessment, we’ll guide you through your options and protect your position.
If you’re facing an audit or reassessment under the GST/HST substantial renovation CRA framework, we can help. Contact us today for a free consultation with an experienced Toronto tax lawyer.
Jeff Kirshen BA, JD (CA), JD (US)
Tax Lawyer | Founder, Kirshen Tax Law
Disclaimer
The information provided in this blog is for general informational purposes only and does not constitute legal advice. Reading this blog does not create a lawyer-client relationship with Kirshen Tax Law or any of its lawyers. If you require legal advice specific to your situation, please consult a qualified tax lawyer. While we strive to keep our content accurate and up to date, laws and regulations may change. Kirshen Tax Law is not responsible for any actions taken based on the information in this blog.