Residential Change-in-Use GST/HST LawBot
Based on the information you provided, it appears that the law may treat the conversion of your property as if you were a "builder" who "substantially renovated" the property.
If these rules apply and you sell the property, the sale may be subject to GST/HST, as if you were a builder selling a substantially renovated property. Please also check out our Residential Sellers' LawBot and select answers for the sale of previously unoccupied residential property.
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If these rules apply and you lease the property, it may trigger "Self-Supply" rules and you may have to account for GST/HST, as if you were a builder who leased and moved into a substantially renovated property. Please also check out our Residential Self-Supply LawBot and select answers for lease of substantially renovated property by a builder.
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This is not legal or tax advice. It is very important that you obtain formal tax advice from your tax advisor.