5 Common HST Questions When Building or Substantially Renovating a Property

How was your long weekend?

Enjoyed the neighborhood firework with over 100 other people right in front of our house. Always grateful we got lucked out to move into this street.

Victoria Day long weekend is always fun in our neighborhood. One of our neighbors organizes an annual fireworks event every year.

This year as a collective group, we spent over a thousand dollars on the fireworks.  

It was an amazing show.  Over a 100 people attended.  I was amazed by the quality of the fireworks.   

And I was amazed by how well my kids stayed asleep during the entire show, even though the fireworks were happening right outside of their windows.  😊

Recently, I’ve got a few clients asking me about the HST impact on flipping properties after a renovation.  It is a confusing area of the Excise Tax Act.  Several interpretations were published by CRA on this topic.  

Here’s the simple definition:

A builder is responsible to charge HST on a newly constructed and a substantially renovated home.

It’s never really simple when it comes down to Excise Tax Act or Income Tax Act.  I’ve come up with a few common scenarios for our discussion.

Am I liable to pay for HST when I tear down the entire house, build a new one and resell it afterwards?

Yes, absolutely.  If you purchase a house with the intention to flip, tear the old house down and build a brand new home, it is considered a newly constructed house and you are required to charge HST on it!

When you go through the standard RECO Offer to Purchase form, a standard clause would have been included forcing the buying agent to choose whether the sale price is inclusive or exclusive of HST.

Residential resale homes are generally HST exempted. Hence, the majority of the sale would state that the sales price is inclusive of HST.

When you build a new home after tearing down the old one, you are required to pay HST.  More often than not, the sales price is also inclusive of HST.

When you do your budgeting, you need to make sure that you account for the 13% HST.  

What if I simply renovate a portion of the house?  Am I required to charge HST?

That depends. If the renovation is not substantial, you are not required to charge HST.

“A substantial renovation is considered to have taken place where all or substantially all of the interior of a building, with the exception of certain structural components (the foundation, external walls, interior supporting walls, roof, floors and staircases), has been removed or replaced.” Source.

All or substantially all means 90% or more, calculated based on any reasonable method and basis, such as floor space, floor and wall space and number of rooms.  

If you did substantially renovate a house (many investors use the term “gutted the entire house”), chances are, you are required to charge HST, which can eat into your profit.

But if you didn’t renovate substantially, you are still encouraged to keep proper evidence, before and after pictures/videos of renovation.  This will come in handy if you ever get audited.

Is the housing rebate available if I build or substantially renovate a house that I sell immediately at completion?


New Residential Housing Rebates are available for the builders to claim, if the buyers intend to move into the property and assign the rights to the builder to apply.

If the sale price is over $450,000, no GST rebate is available.

You would still be eligible to claim $24K of Ontario PST rebate back.

If the buyers intend to rent the residential property out, as a builder, you do not have the right to claim the New Residential Rental Housing Rebates back. The buyers would have to claim this back themselves after closing.

What is the HST implication if I build a home for myself or my relatives that move into the property at completion?

This can get real messy.

If you are building a house in the normal course of business or in an adventure in the nature of trade, you are required to do a self assessment at the time of completion.  

Self assessment of HST is calculated at fair market value of the property at the time of completion.

It’s complicated, let’s use a simple example here.

You own a piece of land that allows you to build 4 detached homes and fully intend to sell them to a third party for a profit upon completion.

You start construction, claim HST paid on the acquisition of land, and all materials purchased.

Life circumstances change and you decide to move into one of the 4 homes.

In this case, you are REQUIRED to do a self assessment on HST at the time the house is substantially completed.  

Another example here.

Same scenario as above, except that you always knew that you intended to move into one of these 4 houses.

You paid the HST and did not claim it back on ¼ of the land acquired.

You also did not claim any of the HST paid on the expenses incurred on your own house.  

You move into the property and occupy the place as your primary residence.  

In this case, you do not need to pay HST on fair market value of the property.  

If you claim input tax credit on the purchase of materials & land, self-supply rules kick in and you need to pay HST at closing on your own property.

What is the HST implication if I build/substantially renovate a house and rent it out?

If you build or substantially renovate a house, rent it out for a couple of years, and sell it.  

Self-assessment rule applies to you.

You are required to calculate your HST payable on the fair market value when the lease starts.

However, when you sell the property, HST does not apply as HST was already paid at the time the property was rented out as someone else’s residence.

HST impact in the construction industry can be quite complicated. Consult a professional to see if there’s any planning possibility so you don’t lose 13% of your profit to CRA.

Until next time, happy Canadian Real Estate Investing.

Cherry Chan, CPA, CA

Your Real Estate Accountant

4 replies
  1. Ari Yapoujian
    Ari Yapoujian says:

    If I purchase a pre construction condo from the builder and move in as a primary residence, do I qualify for HST rebate? purchase price is $453000.
    Assuming I do, how long do I have to live in the unit before selling it?

  2. Cherry
    Cherry says:

    Hi Ari, you qualify to claim the new residential rebate if you truly live in the property and that you occupy the property as your primary residence. 🙂

    There is no specific time period in the Income Tax Act. It is a matter of facts. Currently, CRA is going after anyone that does not own the property for over a year. This does not mean that they are not going after anyone that owns the property for more than a year.

    Hopefully this helps.


  3. Molly
    Molly says:

    Hi Cherry,

    If I buy a home and have substantial renovations done (as defined by the CRA), successfully claim the rebate, and then live in it for 5-10 years before I sell it, am I still liable to charge HST on that subsequent sale?


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