Ontario Enhanced New Housing Rebate 2026: What Custom-Home Owners Need to Know
A custom-home budget can be wrong by tens of thousands of dollars if it assumes an HST rebate that the project does not actually qualify for. Ontario’s temporary Enhanced New Housing Rebate creates meaningful relief for some owner-built homes, but the start date, completion date, fair market value, primary-residence test and invoices all matter. The headline maximum is not an automatic cheque and it is not based only on your construction contract.
For a Toronto or GTA homeowner who owns or leases the lot and hires a design-build contractor, the tax rules normally treat the project as an owner-built home even though the homeowner is not doing the physical construction. That distinction controls the eligibility dates, forms and filing process.
Quick Answer
An eligible individual who begins building or substantially renovating an owner-built Ontario home from April 1, 2026 through March 31, 2027, completes it by December 31, 2029, and uses it as their or a relation’s primary residence may qualify for the Ontario Enhanced New Housing Rebate. For a home with fair market value below $1.85 million, provincial relief can reach $80,000, plus an Ontario-administered payment of up to $50,000. Actual relief depends on value, eligible HST paid and other rebates. Canada Revenue Agency: Ontario Enhanced New Housing Rebate
Key Takeaways
The Ontario ENHR is a temporary enhancement to the existing Ontario new housing rebate; it is not limited to first-time home buyers.
For an owner-built home, construction or substantial renovation must begin from April 1, 2026 through March 31, 2027 and be substantially completed by December 31, 2029.
Fair market value at substantial completion—not simply the contractor’s price—must be less than $1.85 million for the enhanced provincial rebate.
The enhanced Ontario rebate and existing provincial rebate together can provide up to $80,000 of the 8% provincial HST component.
Eligible ENHR claimants may also receive ONHAP of up to $50,000, representing relief for the 5% federal HST component, reduced by federal rebate entitlements.
Owner-builders file their own claim using GST191, GST191-WS and RC7191-ON; ENHR applications are mail-only as of August 26, 2026.
Municipal zoning and permit approvals do not replace the tax tests, but project delays can put the temporary start or completion window at risk.
In This Guide
What the Ontario enhanced rebate covers
Who qualifies as an owner-builder
The 2026 eligibility checklist
How fair market value changes the rebate
ENHR, ONHAP and first-time buyer rebates
Owner-built versus builder-purchased homes
Substantial-renovation rules
Application forms, records and deadlines
Toronto and GTA planning considerations
Common mistakes and practical next steps
What Is the Ontario Enhanced New Housing Rebate?
The Ontario Enhanced New Housing Rebate, or ENHR, is a temporary top-up to Ontario’s existing new housing rebate. Together, the two provincial components can refund up to $80,000 of the 8% Ontario portion of HST paid on an eligible new or substantially renovated home. The program applies to qualifying individuals, not only first-time buyers. CRA: What is the Ontario ENHR
Ontario also created the Ontario New Home Affordability Payment, or ONHAP. An individual who qualifies for the ENHR may also qualify for up to $50,000 corresponding to the 5% federal HST component. ONHAP is reduced by any GST/HST new housing rebate or first-time home buyers’ GST/HST rebate for which the claimant is eligible. Government of Ontario: Enhancing Harmonized Sales Tax Relief on New Homes
All dollar figures in this guide are Canadian dollars. They are potential tax relief, not construction prices or allowances. The claim can never create a refund for HST that was not paid or payable on eligible amounts.
Why “up to $130,000” needs context
The $130,000 headline combines a maximum $80,000 for the provincial part of HST with a maximum $50,000 ONHAP. It is only available at the top level when all eligibility rules are met and enough eligible HST was paid. The total declines in the upper value band, and other federal rebates reduce ONHAP.
For an owner-built custom home, invoices determine how much federal and provincial HST entered the project. Fair market value determines which caps and phase-down rules apply. These are separate inputs, so neither the final contract price nor a $1.2 million appraisal automatically produces a $130,000 payment.
Does a Custom Home Count as Owner-Built?
Usually, yes. For rebate purposes, an individual is in the owner-built stream when they build or hire someone else to build a house on land they own or lease. Hiring a general contractor or full design-build team does not turn the project into a builder-purchased home if the homeowner owns or leases the lot and contracts for construction. CRA: GST/HST new housing rebate
The distinction is about the transaction, not who swings the hammer:
Owner-built: You own or lease the land and engage designers, engineers, trades or a builder to construct the house.
Builder-purchased: You enter an agreement to buy a completed or to-be-built house from a builder, usually with the land or a qualifying long-term land arrangement.
An individual can also be in the owner-built stream after a qualifying substantial renovation, a qualifying major addition combined with extensive work to the existing home, or certain residential conversions. Corporations and partnerships do not claim the homeowner rebate as individuals.
Owner-Built ENHR Eligibility Checklist for 2026
An owner-built custom home should satisfy every applicable item below before the enhanced rebate is included in a working budget:
Individual claimant: The claimant is an individual who owns or leases the land and builds, or hires others to build, the home.
Qualifying use: The home is built for the individual’s or a qualifying relation’s primary place of residence.
Eligible start window: Construction or substantial renovation begins on or after April 1, 2026 and on or before March 31, 2027.
Completion deadline: Construction or substantial renovation is substantially completed by December 31, 2029.
Value threshold: Fair market value when the work is substantially completed is less than $1.85 million.
Underlying rebate conditions: The project otherwise meets the conditions for Ontario’s existing new housing rebate.
Eligible tax paid: The claim is supported by actual invoices and records showing eligible GST/HST paid or payable.
Timely filing: The application is filed within the owner-built deadline determined from the project’s “base date.”
The temporary dates and the owner-built conditions are set out in CRA Notice 346. The notice says construction must begin during the one-year window and be substantially completed before 2030. CRA Notice 346: Ontario Enhanced New Housing Rebate
What counts as the construction start date?
The CRA materials establish the eligibility window but do not turn a permit date, demolition date or contract signature into a universal start-date rule for every fact pattern. Keep dated site records showing when qualifying construction or substantial renovation actually began, including contracts, permits, inspection records, progress photographs, site reports and first construction invoices. Ask the CRA’s GST/HST Rulings service for a technical interpretation when the date is close to March 31, 2027.
What does “substantially completed” mean?
For GST/HST housing rebates, substantial completion is generally reached when construction or the substantial renovation is 90% or more complete. The project still has to meet the separate occupancy and primary-residence conditions before a claim can be paid. CRA Guide RC4028: GST/HST New Housing Rebate
How Fair Market Value Changes the Rebate
Fair market value, or FMV, is the price the completed property would reasonably bring on the open market at substantial completion. For an owner-built claim, CRA’s calculation includes the home, land and reasonably necessary ancillary buildings such as a detached garage or shed. Provincial land transfer tax is not included. CRA Guide RC4028
Understanding Construction Contracts and Market Value
This is why the construction contract is not the value test. A Toronto lot bought years earlier may be worth far more by completion; conversely, not every project expense adds dollar-for-dollar to market value. When the expected value is near $1.5 million or $1.85 million, obtain qualified tax advice and consider an independent appraisal timed to substantial completion.
Fair Market Value and Tax Implications
Fair Market Value at Substantial Completion | Enhanced Provincial Result | ONHAP Result |
$1,000,000 or less | Up to 100% of the 8% provincial HST paid, maximum $80,000 | Up to $50,000, reduced by federal rebate entitlement |
Above $1,000,000 to $1,500,000 | Maximum $80,000, subject to tax actually paid | Maximum $50,000, subject to reductions |
Above $1,500,000 and below $1,850,000 | Enhanced amount declines toward the existing $24,000 provincial rebate | Payment declines toward $0 |
$1,850,000 or more | No ENHR; the existing Ontario rebate of up to $24,000 may still apply | No ONHAP through ENHR eligibility |
Additional Notes
Ontario describes the phase-down from $1.5 million to $1.85 million as linear. The owner-built calculation belongs on Form RC7191-ON; do not interpolate a planning number and treat it as a filed entitlement.
Hypothetical planning example
Suppose an individual owns a Toronto lot, begins eligible construction in June 2026 and substantially completes the custom home in 2028. An appraisal at substantial completion supports an FMV of $1.35 million. The project is in the band where the enhanced provincial maximum is $80,000 and ONHAP can be up to $50,000. The actual payments still depend on the eligible HST recorded on the worksheets and any federal rebate entitlement. This example illustrates the process; it is not a rebate estimate for a real project.
How ENHR, ONHAP and First-Time Buyer Rebates Interact
The Ontario ENHR addresses the 8% provincial portion of HST. ONHAP is an Ontario payment that provides relief equivalent to up to the 5% federal portion. First-time buyer rebates can overlap with those same tax components, so the rules prevent recovery beyond the permitted caps and the tax paid.
If an owner-builder qualifies for the federal first-time home buyers’ GST/HST rebate, that rebate must be calculated first. ONHAP then covers only a remaining eligible amount, if any. For the provincial portion, an eligible person may claim the Ontario first-time buyer rebate, the ENHR or both, but the total is limited to the lesser of $80,000 and provincial HST payable. CRA: What is the Ontario ENHR
You do not submit a separate ONHAP application if you complete the consent section on the housing rebate application. After the CRA assesses the rebate and shares the permitted information, Ontario issues ONHAP separately. CRA: After you apply
Owner-Built Versus Builder-Purchased: Do Not Mix the Rules
The owner-built and builder-purchased pathways have different trigger dates, forms and value thresholds. A homeowner who owns the lot and hires 416 Construction for design and construction generally follows the owner-built pathway; a purchaser buying the house and land from a developer follows the builder-purchased pathway.
Can a Major Renovation or Addition Qualify?
A renovation qualifies only when it meets the GST/HST definition of a substantial renovation, not merely because it is expensive or requires a permit. Generally, 90% or more of the existing home’s interior must be removed or replaced, measured over the livable areas. Foundations, exterior walls, supporting walls, roofs, floors and stairs generally do not have to be removed for this test. CRA: What is the Ontario ENHR
A kitchen remodel, basement finish, deck or single-room addition does not qualify by itself. A major addition can fall into the owner-built rebate rules only when the addition and renovation are extensive enough that the completed residence is viewed as essentially a newly built home. Before relying on the rebate, compare the scope with CRA’s substantial-renovation tests and decide whether renovating or rebuilding better fits the property and goals.
How to Apply for the Owner-Built Rebate
Owner-builders must file their own claim. As of August 26, 2026, CRA says electronic filing is not yet available for ENHR owner-built claims; forms must be mailed. CRA expects electronic filing and the start of ENHR claim processing in fall 2026. CRA: Applying for the rebate—owner-built home
Forms to prepare
Form GST191: GST/HST New Housing Rebate Application for Owner-Built Houses.
Form GST191-WS: Construction Summary Worksheet, used to record eligible costs and tax.
Form RC7191-ON: GST191 Ontario Rebate Schedule, including the Ontario ENHR calculation.
ONHAP consent: Complete the consent-to-share-information section if you want the CRA to transmit the required information to Ontario.
Use the current versions of the forms when filing. CRA’s GST191 page, GST191-WS page and RC7191-ON page should be checked again immediately before submission.
Build the evidence file during construction
Do not wait until occupancy to reconstruct the tax file. Record each supplier or trade, invoice number and date, description of labour or materials, amount paid and GST/HST shown. Estimates and quotations do not prove tax paid. Reconcile change orders and credits, and keep land-acquisition records separate from the construction ledger.
Also keep the signed contracts, proof of payment, permits, inspection documents, occupancy evidence, progress photographs and any appraisal supporting FMV. CRA says claimants should retain applications, worksheets, original invoices, purchase agreements where relevant and proof of occupancy for six years. CRA: After you apply Inspection and close-out records can also help establish the construction chronology. For the separate municipal process, review the inspections required when building a custom home in Toronto.
What Is the Filing Deadline?
Owner-built applications are generally due within two years after the applicable base date. The base date depends on whether the home is occupied after substantial completion, occupied before substantial completion, or sold as an exempt sale before occupancy. It is not safe to treat “two years after move-in” as the rule in every case. CRA: Applying for the rebate—owner-built home
For the common case where the claimant or a relation first occupies the home after substantial completion, the base date is the substantial-completion date; the claim can be made after occupancy and is due within two years of that base date. CRA Guide RC4028 explains the other sequences. Put the deadline in the project close-out checklist and have a tax professional confirm it from the actual facts.
Typical Owner-Built Rebate Planning Timeline
The rebate does not replace a realistic design, permit and construction schedule. Work backward from both March 31, 2027 for the eligible start and December 31, 2029 for substantial completion.
Feasibility and tax review: Confirm ownership structure, intended occupancy, preliminary FMV and likely rebate pathway before committing to a start strategy.
Design and approvals: Coordinate survey, zoning review, architectural design, engineering and permit submission. Review architectural drawings and custom-home services and the complete custom-home building process.
Document the eligible start: Keep objective records of the first qualifying construction activity.
Maintain the HST ledger: Update GST191-WS information from paid invoices rather than relying on a final contract summary.
Monitor schedule and value: Revisit the custom-home build timeline, changes in scope and expected FMV during construction.
Complete, occupy and value the home: Preserve completion and occupancy evidence and obtain a defensible FMV where the thresholds may be material.
Prepare and file: Complete GST191, GST191-WS and RC7191-ON by the correct base-date deadline, including ONHAP consent when appropriate.
Retain the assessment file: Review the CRA notice of assessment and the separate Ontario ONHAP payment.
CRA does not promise a universal processing time. It warns that audit or review can add up to six months depending on complexity and additional information requested. Treat the rebate as a post-filing receivable, not cash guaranteed for a construction draw. CRA: After you apply
Toronto and GTA Considerations
The ENHR is an Ontario tax program, so a qualifying owner-built home in Toronto, North York, Etobicoke, Scarborough, Mississauga, Oakville, Burlington, Vaughan, Richmond Hill or Pickering follows the same provincial eligibility framework. Municipalities still control zoning, building permits and local inspections. Those approval systems can materially affect whether a proposed project can start and finish within the temporary federal-provincial tax dates.
For a Toronto project, a new custom house requires a building-permit process through Toronto Building, but a municipal permit is not a CRA rebate approval. City of Toronto: Building Permits
Avoid artificial city-by-city assumptions. A variance, conservation-authority approval, utility relocation, tree permit or servicing requirement may matter on one property and not the next. Determine the authorities from the site address and proposed design, then build those dependencies into the project schedule.
Common Mistakes That Put the Rebate at Risk
Treating the $130,000 maximum as guaranteed
The maximum combines two components and remains subject to value bands, eligible HST and other rebate entitlements. Use it as a ceiling for an eligible fact pattern, not as money already available for the construction budget.
Using construction cost as fair market value
FMV includes the completed property and land at substantial completion. A valuable GTA lot can move the home into the phase-down band even when the construction contract is well below $1.5 million.
Starting too early or too late
For the owner-built ENHR, construction must begin within the April 1, 2026–March 31, 2027 window. Contract signing, demolition, excavation and qualifying construction may not all have the same tax meaning. Preserve evidence and seek a ruling when timing is borderline.
Assuming any large renovation qualifies
Permit value, project price and duration do not replace the 90% substantial-renovation test. Document the existing and proposed livable areas and the work to be removed or replaced.
Losing invoice detail
The rebate calculation depends on eligible tax actually paid. Quotes, cash totals without tax detail and incomplete vendor records make the worksheet harder to support.
Using the homeowner rebate for a rental strategy
The homeowner ENHR requires intended use as the claimant’s or a relation’s primary place of residence. A purpose-built rental follows different new residential rental property rebate rules. Confirm the intended use before choosing forms or relying on a rebate amount.
416 Construction Practical Guidance
The rebate should be a coordinated planning input, not the feature that drives the entire project. 416 Construction recommends setting an initial go/no-go review before the construction start date that brings together the site’s zoning path, permit-ready design, engineering scope, procurement schedule, working budget, ownership structure, primary-residence plan and preliminary FMV.
Keep tax advice independent. A design-build team can organize contracts, scopes, invoices, schedule records and completion documents, but a qualified GST/HST accountant, rebate specialist or tax lawyer should confirm the claimant, calculation and filing. Contact CRA GST/HST Rulings when the start date, ownership arrangement, substantial-renovation test or transaction structure is uncertain.
Conclusion: What Custom-Home Owners Need to Know
The Ontario Enhanced New Housing Rebate can materially reduce the HST burden on an eligible 2026 owner-built custom home, with combined provincial relief of up to $80,000 and ONHAP of up to $50,000. Qualification turns on more than the headline: construction must start in the prescribed one-year window, the home must be substantially completed by the end of 2029, FMV must remain below $1.85 million for ENHR, the residence-use test must be met and the claim must be supported by eligible tax records.
416 Construction can coordinate custom-home architectural design, engineering, permits, budgeting and construction through one Toronto/GTA design-build team. To plan the build around real approvals and a defensible schedule, speak with 416 Construction. For rebate eligibility and filing, pair that construction planning with advice from a qualified GST/HST professional.
Information disclaimer: This article provides general information as of August 26, 2026. It is not tax, legal, accounting, appraisal, engineering or building-code advice. Eligibility depends on the legislation, regulations, CRA administration and the facts of the specific project. Confirm material decisions with the CRA and qualified professional advisers before relying on a rebate in a contract, financing plan or construction budget.
Frequently Asked Questions:
1. Do I have to be a first-time home buyer to qualify for the Ontario ENHR?
No. The Ontario Enhanced New Housing Rebate is available to an otherwise eligible individual whether or not that person is a first-time buyer. First-time buyer rebates are separate programs that may interact with ENHR and ONHAP. If you qualify for more than one program, the calculations prevent total relief from exceeding the applicable caps and HST paid.
2. Can an owner-built custom home qualify if I hire a general contractor?
Yes. “Owner-built” is a tax category, not a requirement to perform the trades yourself. If you own or lease the land and hire a general contractor or design-build team to construct the residence, the owner-built pathway can apply. You still have to meet the individual, primary-residence, timing, value, tax-paid and filing conditions.
3. What is the maximum enhanced HST relief for an eligible owner-built home?
The enhanced Ontario rebate and existing provincial rebate together can reach $80,000 for the 8% provincial HST component. ONHAP can provide up to another $50,000 related to the 5% federal component, for a possible combined maximum of $130,000. Actual relief is limited by fair market value, eligible HST paid and other rebate entitlements.
4. Is the $1.85 million limit based on construction cost?
No. The owner-built ENHR test uses fair market value when construction or substantial renovation is substantially completed. FMV includes the land, completed home and reasonably necessary ancillary buildings such as a detached garage or shed. It is not simply the general-contractor price, total invoices, insured value or mortgage amount.
5. What if the completed home is worth between $1.5 million and $1.85 million?
The enhanced provincial amount declines in that band until it reaches the existing Ontario rebate level, and ONHAP declines toward zero. The exact owner-built calculation belongs on Form RC7191-ON and uses the project’s eligible provincial HST. Obtain a defensible FMV and professional tax review rather than using a rough percentage in the construction budget.
6. What if the owner-built home is worth $1.85 million or more?
The Ontario ENHR is not available at an FMV of $1.85 million or more, and ENHR-based ONHAP is not available. The existing Ontario new housing rebate of up to $24,000 may still be available if the project satisfies its conditions. Federal or first-time buyer rules require separate analysis.
7. When must construction begin and finish?
For the owner-built Ontario ENHR, construction or substantial renovation must begin on or after April 1, 2026 and on or before March 31, 2027. It must be substantially completed by December 31, 2029. Because the CRA materials do not make every permit, demolition or contract date the start date, preserve objective site records and seek a ruling for borderline facts.
8. Does a home addition qualify for the enhanced rebate?
Not by itself in most cases. A major addition may qualify only when the addition and renovation of the existing home are so extensive that the whole residence is considered substantially renovated or essentially newly built. A single bedroom, family room, sunroom or ordinary rear addition generally does not meet that threshold without extensive work to the existing house.
9. Can I claim the homeowner ENHR for a rental property?
Not when the property is built as a rental rather than the claimant’s or a qualifying relation’s primary place of residence. Rental construction falls under separate new residential rental property rebate rules, with different eligibility and forms. Decide the intended use and ownership structure before construction begins; changing the plan can change the rebate pathway.
10. Which forms does an owner-builder need?
An owner-builder generally prepares Form GST191, GST/HST New Housing Rebate Application for Owner-Built Houses; Form GST191-WS, Construction Summary Worksheet; and Form RC7191-ON, the Ontario schedule. Complete the ONHAP information-sharing consent if applicable. Check the CRA pages immediately before filing to ensure that the current form versions and submission instructions are used.
11. Can I apply online in August 2026?
No. As of August 26, 2026, CRA says owner-built applications that include the Ontario ENHR can only be filed by mail. Electronic filing and the start of ENHR claim processing are expected in fall 2026. Because that timing could change, confirm the current filing channel on the CRA’s GST191 page before submitting.
12. How long do I have to file the owner-built claim?
You generally have two years after the applicable base date. The base date varies with the order of substantial completion, first occupancy and any exempt sale, so it is not always simply the move-in date. Use the situations in CRA Guide RC4028 and the owner-built application page, and have a tax professional calendar the deadline from the actual chronology.
13. How long will CRA processing take?
CRA has not promised one standard turnaround for every ENHR claim. It says processing of ENHR applications begins in fall 2026 and that an audit or review can add up to six months, depending on complexity and requested information. Do not use the expected rebate as a guaranteed construction draw or fixed closing-date receipt.
14. Do municipal permits determine rebate eligibility?
No. Toronto Building or another GTA municipality decides zoning, building-permit and inspection matters; the CRA and Ontario administer the rebate. Municipal records can help establish the project chronology, but a permit does not guarantee ENHR eligibility. The design, permit and construction schedule still matters because delays can jeopardize the temporary start or completion dates.
Sources and Further Reading
Canada Revenue Agency — “Ontario enhanced new housing rebate (ENHR)” (Canada/Ontario): Program hub
Canada Revenue Agency — “What is the Ontario ENHR” (Canada/Ontario): Rebate amounts, ONHAP and substantial renovation
Canada Revenue Agency — “Notice 346: Ontario Enhanced New Housing Rebate” (Canada/Ontario): Eligibility dates and transaction rules
Government of Ontario — “Enhancing Harmonized Sales Tax Relief on New Homes” (Ontario): 2026 HST relief backgrounder
Canada Revenue Agency — “Applying for the rebate: Owner-built home” (Canada/Ontario): Forms, filing channels and deadlines
Canada Revenue Agency — “After you apply” (Canada/Ontario): Records, assessment and ONHAP payment
Canada Revenue Agency — “GST/HST New Housing Rebate” (Guide RC4028, Canada): Detailed owner-built rules and calculations
Canada Revenue Agency — “GST191 GST/HST New Housing Rebate Application for Owner-Built Houses” (Canada): Current form and filing notice
Canada Revenue Agency — “GST191-WS Construction Summary Worksheet” (Canada): Current worksheet
Canada Revenue Agency — “RC7191-ON GST191 Ontario Rebate Schedule” (Ontario): Current Ontario schedule
City of Toronto — “Building Permits” (Toronto): Municipal building-permit information
Comments