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CRA GST/HST Audits: Why the “Builder” Characterization Matters in Tax Litigation

September 9, 2026 by SpenceDrake Tax Law Audits, GST/HST, Housing, Tax Court Appeal
Home | Audits | CRA GST/HST Audits: Why the “Builder” Characterization Matters in Tax Litigation

CRA GST/HST Audits: Why the "Builder" Characterization Matters in Tax Litigation

For Canadian real estate investors, developers and property owners, few GST/HST issues can have consequences as significant as whether a taxpayer is a “builder” for purposes of the Excise Tax Act, R.S.C. 1985, c. E-15 (the “ETA”).

Builder characterization can determine whether GST/HST becomes payable on a sale or deemed supply of residential property, whether input tax credits (“ITCs”) are available, and whether GST/HST consequences arise when a newly constructed or substantially renovated property is retained as a rental or otherwise changes use.

The issue frequently arises where a taxpayer acquires land or an existing residential property, undertakes construction or substantial renovations, and subsequently sells, rents or otherwise disposes of the property. The taxpayer may characterize the project as an investment, a rental business or a personal real estate venture. The Canada Revenue Agency (“CRA”), however, may take the position that the taxpayer meets the statutory definition of a “builder” which attracts GST/HST obligations.

In an audit or tax appeal, the characterization of the taxpayer’s activities can become a central—and sometimes determinative—issue.

1. “Builder” is a statutory characterization

The ordinary meaning of “builder” provides an incomplete answer to the GST/HST question.

Subsection 123(1) of the ETA contains a specific statutory definition of “builder,” and that definition is not limited to conventional construction companies or persons who physically perform construction work.

A taxpayer may engage third-party contractors to construct or substantially renovate a property and nevertheless fall within the statutory definition. The relevant inquiry is not simply what the taxpayer calls itself or whether construction is its ordinary occupation. The analysis requires consideration of the statutory language and the particular facts surrounding the property and the taxpayer’s activities.

Accordingly, describing a taxpayer as an “investor,” “landlord,” “developer” or “property owner” does not, by itself, resolve the GST/HST analysis. For litigation purposes, the starting point should therefore be the statutory definition, rather than the taxpayer’s business label.

2. Why the "builder" characterization matters

A finding that a taxpayer is a builder can engage several provisions of the ETA, including rules concerning:

  • taxable supplies of new or substantially renovated residential property;
  • self-supply of residential properties;
  • ITCs relating to construction, renovation and development expenditures;
  • new housing rebates;
  • changes in use of residential properties; and
  • GST/HST consequences.

The financial consequences can be substantial.

A taxpayer that has claimed significant ITCs during construction may face an assessment involving both the denial or adjustment of ITCs and an alleged GST/HST liability arising from a sale or deemed supply. Depending on the circumstances, the dispute may also involve interest and penalties.

The characterization issue can therefore affect both GST/HST payable and GST/HST recoverable.

3. The CRA's case: how builder status is established

In an audit, the CRA will generally seek to establish the factual circumstances underlying the taxpayer’s activities and then apply the statutory provisions to those facts.

The auditor may examine:

  • agreements for the acquisition and disposition of the property;
  • construction and renovation contracts;
  • building permits;
  • architectural plans;
  • invoices and proof of payment;
  • financing and mortgage documents;
  • project budgets and feasibility studies;
  • corporate and partnership records;
  • accounting records and general ledgers;
  • GST/HST returns;
  • ITC claims;
  • rental agreements;
  • property-management records;
  • listing agreements;
  • marketing materials;
  • correspondence with real estate agents;
  • correspondence with lenders, contractors and professional advisers; and
  • records documenting changes in the taxpayer’s plans.

The CRA may attempt to construct a chronology of the transaction from acquisition through construction or renovation and ultimately to the property’s sale, rental or other disposition.

This can be important because the CRA’s characterization may not depend upon a single document or isolated statement. Rather, the auditor may attempt to draw an inference from the totality of the evidence. Importantly, CRA auditors are incentivised so do not assume you will receive a fair determination at the audit level.

4. Intention matters—but intention is not determined solely by testimony

A taxpayer’s intention can be highly relevant to the characterization of a real estate transaction.

Relevant questions may include:

  • What was the taxpayer’s intention when the property was acquired?
  • Was the property acquired with an intention to sell?
  • Was construction or renovation undertaken with a view to resale?
  • Was the property intended to be held as a long-term rental investment?
  • Was there a business plan for the project?
  • Did the taxpayer’s intention change during construction?
  • What financing was obtained, and for what purpose?
  • Was the property marketed for sale?
  • How long was the property held?
  • What ultimately happened to the property?
  • Has the taxpayer undertaken similar transactions previously?

However, intention is not necessarily established by the taxpayer’s retrospective description of the transaction.

The CRA may test the taxpayer’s stated intention against objective evidence. Purchase agreements, financing arrangements, project budgets, corporate resolutions, construction documents, correspondence, marketing activities and the ultimate disposition may all be relevant.

A taxpayer’s assertion that a property was “always intended to be a rental” may carry less weight if contemporaneous documents indicate that the property was being prepared and financed for immediate resale.

Conversely, evidence that a property was consistently treated as a long-term investment—including financing, leasing, management and accounting records—may be relevant to rebut an inference that the taxpayer’s activities were undertaken for resale.

The litigation issue is therefore often not simply what the taxpayer says it intended, but whether the evidence as a whole supports that position.

5. The “adventure or concern in the nature of trade”

The concept of an “adventure or concern in the nature of trade” can be important in disputes involving the characterization of real estate activities.

The analysis is fact-specific. Relevant considerations may include the taxpayer’s intention, the nature of the property, the circumstances of acquisition, the nature and extent of the work undertaken, the length of ownership, the taxpayer’s activities during the project and the circumstances surrounding disposition.

This can create difficult factual distinctions.

A taxpayer that acquires a completed residential property and holds it for rental income may present a materially different factual situation from a taxpayer that acquires land, undertakes extensive development, and sells the completed property shortly thereafter.

Likewise, the fact that a property was ultimately sold does not necessarily establish that the taxpayer acquired or developed it as part of a trading activity. Nor does the fact that a taxpayer initially contemplated a sale necessarily determine the ultimate GST/HST treatment if the taxpayer’s plans subsequently changed and the applicable statutory rules recognize that change.

The proper analysis must therefore remain anchored in the statutory provisions and the evidence concerning the particular transaction.

6. Construction and substantial renovation

Builder disputes are not limited to ground-up construction. The ETA contains specific rules dealing with substantial renovations. As a result, the purchase of an existing residential property does not necessarily take a taxpayer outside the builder provisions.

The nature and extent of the work may become important. Evidence such as construction contracts, permits, invoices, architectural plans, engineering reports, photographs and project correspondence can assist in establishing what work was actually performed.

This evidence can become particularly important in litigation where the CRA and taxpayer disagree about whether the work constituted a substantial renovation or otherwise satisfies the applicable statutory requirements.

The taxpayer should therefore avoid treating renovation documentation as merely an accounting matter. It may become substantive evidence concerning the GST/HST characterization of the entire project.

7. The problem of a property that is retained as a rental

One of the most difficult situations can arise where a taxpayer constructs or substantially renovates a residential property and ultimately retains it rather than selling it.

For example, a taxpayer may initially contemplate selling the completed property but later decide to retain it as a rental. Alternatively, the taxpayer may undertake the project from the outset with the intention of holding the property for rental purposes.

The GST/HST consequences can differ depending on the statutory provisions engaged and the taxpayer’s circumstances. In particular, the self-supply rules can result in GST/HST consequences even though the taxpayer has not made an ordinary sale to an unrelated purchaser.

This is an area where the chronology of the project can become especially important. The taxpayer’s intention, the timing of construction, occupancy, leasing, changes in use and other relevant events should be carefully documented.

8. ITCs can materially increase the stakes

Builder characterization can also affect the taxpayer’s entitlement to ITCs.

Where GST/HST has been incurred on construction and development costs, the amounts at issue may be significant. A CRA assessment denying ITCs can therefore create a substantial tax liability even where the taxpayer has not generated significant revenue from the property.

The taxpayer must also be able to substantiate its ITCs.

Relevant evidence may include:

  • properly issued invoices;
  • proof of payment;
  • contracts;
  • accounting records;
  • GST/HST registration information;
  • construction draw records;
  • project-specific ledgers; and
  • evidence connecting expenditures to the relevant commercial activity.

In litigation, the question is not merely whether the taxpayer incurred construction costs. The taxpayer may also need to establish that the statutory requirements for claiming the particular ITCs have been satisfied.

9. A litigation-focused approach to the CRA audit

Once builder characterization becomes an audit issue, the taxpayer should treat the audit as more than a request for accounting records. The CRA may be developing the factual record that will ultimately support an assessment. The taxpayer should therefore identify, at an early stage:

  1. What statutory provision is the CRA relying upon?
  2. What facts does the CRA say establish builder status?
  3. What facts are disputed?
  4. What evidence supports the taxpayer’s position?
  5. Are the CRA’s factual assumptions complete and accurate?
  6. Has the CRA considered evidence inconsistent with its proposed characterization?
  7. Are different transactions or reporting periods being conflated?
  8. Are the GST/HST consequences being determined from the correct statutory provision?

This distinction is important because a dispute may ultimately turn less on the general proposition that a taxpayer “built a house” and more on whether the statutory conditions for a particular GST/HST consequence have actually been established. 

As a reminder, CRA auditors are incentivised so do not assume you will receive a fair determination at the audit stage. Tax legislation is only truly and objectively considered in Tax Court. Prior to that dealing with CRA is an administrative process.

10. Challenging the CRA's characterization

A taxpayer challenging a builder-related assessment should consider both the legal characterization and the underlying factual assumptions.

The first step is to identify precisely what the CRA has assessed and why. The taxpayer should obtain and scrutinize the CRA’s audit findings, including the assumptions relied upon in support of the assessment. The relevant evidence should then be organized chronologically and by issue.

Potential areas of challenge may include:

  • whether the taxpayer falls within the statutory definition of “builder”;
  • whether the property meets the statutory requirements applicable to new or substantially renovated housing;
  • whether the taxpayer’s activities constitute a business or an adventure or concern in the nature of trade where that concept is relevant;
  • whether the CRA has accurately characterized the taxpayer’s intention;
  • whether the CRA has ignored or given insufficient weight to contemporaneous documentary evidence;
  • whether a change in intention or use occurred and, if so, when;
  • whether the ETA section 191 self-supply provisions apply on the particular facts;
  • whether the CRA has applied the correct valuation or timing rules; and
  • whether claimed ITCs satisfy the applicable statutory requirements.

A taxpayer should also distinguish between facts that are genuinely disputed and the legal conclusions drawn from facts that are not disputed. That distinction can materially affect how an objection or appeal should be framed.

11. The evidentiary record may determine the outcome

Builder disputes are often evidence-intensive.

A taxpayer’s strongest evidence may be contemporaneous documentation created before the dispute arose. For example, a financing application prepared before construction, a contemporaneous investment memorandum, a lease entered into before completion, or corporate records documenting an intention to retain the property may be relevant.

Similarly, evidence of the taxpayer’s conduct after construction may corroborate—or undermine—the taxpayer’s asserted intention.

The CRA’s evidence should be scrutinized in the same manner.

An auditor’s conclusion that a taxpayer intended to resell a property may rest on inferences drawn from a short holding period, construction expenditures, financing arrangements or a subsequent sale. Those facts may be relevant, but they do not necessarily answer every statutory question.

The litigation task is to determine whether the CRA’s factual findings and legal conclusions actually follow from the evidence and the ETA.

12. Do not let the ultimate sale determine the entire analysis

One recurring issue in real estate disputes is the temptation to treat the ultimate disposition as determinative.

For example, a taxpayer may sell a property and the CRA may infer that the property was acquired or developed for resale. But the fact of sale is only one part of the factual record.

Conversely, retaining a property as a rental does not necessarily eliminate GST/HST consequences that may arise under specific self-supply or change-in-use provisions.

The analysis must therefore consider the taxpayer’s activities and the applicable statutory rules at the relevant points in time.

The question is not simply:

“Did the taxpayer eventually sell the property?”

The more useful questions are:

  • What did the taxpayer acquire?
  • Why was it acquired?
  • What did the taxpayer do with it?
  • Why was construction or renovation undertaken?
  • How was the project financed?
  • What was the taxpayer’s intention at the relevant time?
  • Did that intention change?
  • What statutory provisions apply to the resulting use or disposition?

13. Builder status should be addressed before the assessment

The strongest litigation position is often created before litigation begins.

Where a project involves substantial construction or renovation, GST/HST issues should be considered when:

  • acquiring land or an existing residential property;
  • determining the ownership structure;
  • establishing corporations or partnerships;
  • entering construction contracts;
  • arranging project financing;
  • deciding whether completed units will be sold or rented;
  • changing the intended use of a property;
  • transferring property between related entities; and
  • negotiating a disposition.

Contemporaneous documentation should accurately reflect the commercial purpose of the transaction.

This does not mean creating documents for the purpose of influencing a future audit. Rather, it means ensuring that legitimate commercial decisions, intentions and changes in circumstances are properly documented when they occur.

That record may later become important if the CRA challenges the taxpayer’s characterization.

14. The key litigation questions

When builder status is disputed, the case should generally be approached through a series of focused questions:

First: What does the ETA actually require?

Second: What facts does the CRA rely upon to establish those requirements?

Third: Are those factual assumptions supported by the evidence?

Fourth: Is there contemporaneous evidence pointing in the opposite direction?

Fifth: Has the CRA conflated the taxpayer’s ultimate disposition with the taxpayer’s intention or activities at an earlier point in time?

Sixth: Has the CRA applied the correct GST/HST provision to the facts?

Seventh: What are the resulting consequences for GST/HST, ITCs, self-supply, change in use and any related amounts?

These questions can help transform a broad dispute over whether a taxpayer was really a “builder” into a more precise analysis of the statutory requirements and evidentiary record.

The Tax Court of Canada’s recent decision in Fadali v. His Majesty the King, 2026 TCC 86  illustrates the importance of paragraph 123(1)(f) of the Excise Tax Act, R.S.C., 1985, c. E-15, which provides an exception to the definition of “builder.”  

Conclusion

For GST/HST purposes, “builder” is a legal and statutory characterization, not simply a description of a taxpayer’s occupation.

A taxpayer does not necessarily avoid the builder rules by describing itself as an investor or landlord. At the same time, the fact that a taxpayer constructed or substantially renovated a property does not, without more, resolve every GST/HST issue.

In a CRA audit, builder characterization may depend upon the interaction between the statutory definition, the nature of the property, the taxpayer’s activities, the circumstances of acquisition and construction, the taxpayer’s intention, any subsequent change in use, and the property’s eventual disposition.

Once an assessment has been issued, the dispute may turn on a combination of statutory interpretation, factual findings, evidentiary assumptions and the proper application of the ETA to those facts.

For taxpayers and their advisers, the practical lesson is straightforward: builder characterization should be addressed before an audit becomes an assessment, and before an assessment becomes litigation.

A carefully documented factual record, a precise understanding of the statutory provisions and an early identification of the CRA’s assumptions can materially improve the taxpayer’s ability to respond to, object to and, where necessary, appeal a builder-related GST/HST assessment.

 

SpenceDrake Tax Law – Tax Lawyers

 

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