If you’re an individual who built or substantially renovated a home, moved in, and later sold it, you may face a CRA self-built home GST/HST audit where CRA alleges that you’re a builder under the Excise Tax Act (ETA). Their position? That you should have:
- Self-assessed GST/HST under the self-supply rule when you moved in; or
- Charged GST/HST on the sale because the property was “inventory” used in a business.
But subsection 191(5) of the ETA offers a powerful exemption if you meet the criteria and a Toronto tax lawyer can help you understand whether it applies in your situation.
Understanding the Self-Supply Rule and the Exemption
Builders are generally required to pay GST/HST on the fair market value of a new home they occupy. This is called the self-supply rule. It prevents tax from being avoided when a builder doesn’t sell the property in a taxable transaction.
However, subsection 191(5) creates a narrow exemption from this rule.
You don’t have to self-assess GST/HST if:
- You’re an individual (not a corporation);
- You actually used the home as a primary place of residence, for yourself or a related person;
- The home wasn’t used primarily for another purpose (like a rental or sale); and
- You did not claim input tax credits (ITCs) on construction or improvements.
CRA’s Argument After a Sale
Many homeowners are unaware of the GST/HST consequences of selling a self-built home, especially when CRA disputes whether the personal-use exemption applies.
Even if you moved into the home and lived there, CRA may argue:
- You didn’t live there long enough or didn’t really intend to stay;
- The home was built for resale, and therefore was inventory;
- You’re a builder and should have charged GST/HST on the sale; or
- You were required to self-assess GST/HST when you moved in.
This often happens after a home is sold, when CRA audits the transaction and reviews your use of the property leading up to the sale, sometimes requiring legal support from a Toronto tax lawyer to fight back.
Court Cases on GST/HST and Builder Status
Lacina v. HMQ (1997 FCA)
This older case emphasized taxpayers require an intent to reside on a permanent basis. While still binding, more recent case law has softened this interpretation, focusing more on use in fact than subjective intent. However, this is the case that CRA will almost always point to in supporting their position that a taxpayer is a builder and should have charged GST/HST.
Coates v. The Queen (2011 TCC 74)
The Tax Court held that it’s about actual residential use, not speculation about motives.
“A secondary intention to resell is irrelevant… what matters is whether the home was actually used as a residence.”
Swift v. The Queen (2020 TCC 115)
This case tried to merge the earlier caselaw stating that “permanently” doesn’t mean forever. A taxpayer may be entitled to the personal-use exemption if life events forced the sale.
Defending Against a CRA Self-Built Home GST/HST Assessment
If CRA audits you after a sale, here’s how to protect your position:
- Prove you lived in the home: utility bills, tax statements, insurance, driver’s license, voter registration, etc.
- Show personal, not business, use: avoid anything that suggests the home was treated as inventory (e.g., real estate marketing before move-in).
- Challenge the builder label: argue you were not a builder for ETA purposes, or that the home fell within the personal-use exemption.
- Emphasize the actual facts: the test is about whether the home was used as a residence, not for how long.
Kirshen Tax Law Can Help
If you sold a home you built or renovated and the CRA is demanding GST/HST, you may still qualify for the subsection 191(5) exemption even if you only lived there for a short time.
At Kirshen Tax Law, we help clients challenge CRA self-built home GST/HST audits, CRA builder audits, file Notices of Objection, and defend their rights in GST/HST disputes. If you need trusted advice from a Toronto tax lawyer, we’re here to help.
Call us today to book a free consultation with an experienced Toronto tax lawyer who understands how to push back on unfair CRA assessments.
Jeff Kirshen BA, JD (CA), JD (US)
Tax Lawyer | Founder, Kirshen Tax Law
Disclaimer
The content on this website, including articles and blog posts, is provided for general informational purposes only. It reflects the laws and regulations as of the date of publication, which may have since changed. This content is not intended to serve as legal advice and should not be relied upon as such. Tax laws and situations can be complex and unique to each individual. The information provided may not apply to your specific circumstances. For personalized advice regarding your tax or legal matters, we recommend consulting a qualified lawyer.