How Much Does a Full-Gut Home Renovation Cost in Toronto in 2026?
Last updated: September 3, 2026
A full-gut renovation can produce a home that feels entirely new, but the most expensive mistake is treating a single per-square-foot figure as a complete budget. In Toronto, the condition of an older house, structural changes, mechanical-system replacement, finish choices, permits, temporary accommodation and HST can move the real cash requirement by hundreds of thousands of dollars.
This guide gives Toronto homeowners a defensible 2026 planning range, explains what the numbers do and do not include, and shows how to replace an early allowance with a project-specific budget before construction starts. The figures below are planning estimates, not fixed quotes or municipal fees.
Quick Answer
416 Construction planning estimate: in 2026, many Toronto full-gut home renovations require about $250–$450+ per square foot in hard construction costs, excluding 13% HST. A controlled interior rebuild may fall near $225–$300 per square foot, while complex structural work, premium finishes, underpinning or major envelope upgrades can reach $425–$600+ per square foot. At $250–$450 per square foot, a 1,500-square-foot home represents roughly $375,000–$675,000 before HST, design, engineering, municipal fees, hazardous-material work and temporary housing.
Key Takeaways
Use $250–$450+ per square foot, excluding HST, as an early 2026 planning band for many Toronto full-gut renovations—not as a quote.
A relatively controlled project can be lower; difficult structure, older systems, luxury finishes, underpinning, additions or exterior-envelope work can push costs above the range.
Hard construction is only one part of the cash requirement. Add design, engineering, permits, testing or abatement, accommodation, storage, financing and contingency.
Ontario HST is 13%. The cost tables state both the before-HST construction allowance and the same allowance after HST. Canada Revenue Agency
Toronto building permits are commonly required for structural alterations and changes to plumbing or heating systems; electrical work uses a separate ESA notification and inspection process. City of Toronto and ESA
For an older Toronto home, a 15%–25% owner contingency can be prudent until invasive investigation reduces uncertainty. This is 416 Construction practical guidance, not a legal rule.
A complete design, scope and finish schedule is the best basis for comparing contractor proposals on equal terms.
Table of Contents
What a full-gut renovation means
2026 Toronto cost per square foot
Budget examples by house size
What the construction price includes and excludes
The biggest cost drivers
Permits, inspections and other approvals
Typical design and construction timeline
Living in the home during construction
Renovation, addition or rebuild
A seven-step budgeting process
Common mistakes and when to call professionals
Frequently asked questions
What Is a Full-Gut Home Renovation?
A full-gut renovation removes most interior finishes and often exposes wall and ceiling framing so the layout, electrical, plumbing, heating, cooling, insulation and finishes can be rebuilt as an integrated system. The foundation and much of the exterior shell normally remain. Some projects also replace windows, roofing or cladding, but those items should be named explicitly rather than assumed.
The term is not a permit category or a standardized construction scope. One contractor may use “full gut” for finishes and services inside the existing shell; another may include structural beams, basement underpinning or exterior-envelope work. A useful estimate therefore begins with drawings and an inclusion schedule, not the label alone.
Cosmetic renovation is different. Repainting, replacing floors, refacing cabinets and updating fixtures without relocating services can leave most of the home intact. A full gut affects many interdependent systems, which increases design effort, inspection coordination, temporary-service needs and the consequences of a missed item.
How Much Does a Full-Gut Renovation Cost in Toronto in 2026?
A realistic early allowance is usually a range, because drawings, finish selections and concealed conditions are not yet known. The following 416 Construction planning bands apply to hard construction in Canadian dollars, exclude 13% HST, and assume work within an existing Toronto house. They are not contractor bids, appraisals or published government rates.
2026 planning band | Hard construction cost | Typical scope signals |
|---|---|---|
Controlled full gut | $225–$300 per sq. ft. | Straightforward access; limited structural change; standard-to-upgraded finishes; few concealed-condition surprises |
Typical Toronto full gut | $300–$425 per sq. ft. | New kitchen and bathrooms; broad electrical, plumbing and HVAC work; some layout or structural change; custom millwork |
Complex or premium | $425–$600+ per sq. ft. | Major structure, underpinning or foundation work; high-end finishes; difficult access; heritage or envelope complications; extensive customization |
Projects do not stay neatly in one band. A modest finish package can still be expensive if the house needs a new service, drainage work, steel, masonry repair or extensive levelling. Conversely, premium cabinetry can move one section of a structurally simple project upward without changing every square foot equally.
Illustrative budgets by finished floor area
The next table applies the broad $250–$450 per-square-foot planning band to the renovated floor area. “After HST” adds Ontario’s 13% HST to hard construction only. It still excludes design, engineering, municipal fees, testing or abatement, accommodation, financing, landscaping and contingency. CRA HST guidance
Renovated area | Hard construction before HST | Hard construction after 13% HST |
|---|---|---|
1,200 sq. ft. | $300,000–$540,000 | $339,000–$610,200 |
1,500 sq. ft. | $375,000–$675,000 | $423,750–$762,750 |
2,000 sq. ft. | $500,000–$900,000 | $565,000–$1,017,000 |
2,500 sq. ft. | $625,000–$1,125,000 | $706,250–$1,271,250 |
These examples are multiplication exercises, not promises. A smaller house can have a higher cost per square foot because every project still needs a kitchen, service upgrades, site supervision, protection, permits and mobilization. Large open areas may be cheaper per square foot than bathrooms, kitchens or technically dense basements.
What Is Usually Included—and Excluded?
A hard construction allowance commonly covers demolition, disposal, temporary protection, framing, rough electrical and plumbing, HVAC work, insulation and air sealing where included, drywall, painting, flooring, tile, cabinetry, interior trim, fixtures, contractor supervision and trade coordination. Exact coverage varies by contract.
The following items are often separate or provisional and must be checked line by line:
architectural or BCIN design, structural engineering, mechanical design and surveying;
municipal permit fees, zoning reviews, committee applications and third-party inspections;
asbestos, lead, mould or contaminated-material testing and abatement;
temporary housing, moving, storage, security and additional insurance;
appliances, furniture, window coverings, decorative art and loose accessories;
utility upgrades, service relocations, sewer work, underpinning, additions or exterior landscaping unless specifically listed;
owner-requested changes, financing costs, contingency and HST.
Ask every bidder to price the same drawings, specifications and allowances. A lower total may simply omit design coordination, appliances, disposal, temporary heat, patching or finish items that another proposal includes. For a broader sequencing framework, see How to Plan a Large Home Renovation in Toronto.
Eight Factors That Move the Price Most
1. Concealed conditions in older Toronto houses
Century homes and repeatedly altered houses may conceal undersized framing, masonry deterioration, water damage, unvented assemblies, abandoned piping, knob-and-tube wiring or previous work that does not match the drawings. Selective openings, a drain scan, electrical review and structural investigation can move some risk from contingency into the base scope.
If older wiring is suspected, review the separate guide to knob-and-tube replacement costs in Toronto. Electrical repairs and upgrades must be handled through the appropriate Electrical Safety Authority process. ESA
2. Layout and structural change
Moving a non-load-bearing partition is not equivalent to removing a bearing wall, cutting a new stair opening or changing floor levels. Structural work can require engineering, temporary shoring, beams, posts, footings, masonry repair and detailed sequencing. Open-concept layouts also affect mechanical routes, bulkheads, lighting and fire-safety details.
3. Kitchens, bathrooms and millwork
Rooms with cabinetry, stone, tile, waterproofing, plumbing fixtures, ventilation and numerous electrical devices cost more per square foot than simple bedrooms. Custom cabinetry, integrated appliances, slab backsplashes, curbless showers and specialty hardware can materially change both procurement time and installation cost.
4. Electrical, plumbing and HVAC scope
A full gut is often the sensible time to replace obsolete wiring, supply and waste piping, ducts, equipment and controls, but the required scope depends on existing capacity and condition. Electrical service size, panel location, gas work, radiator removal, heat-pump design and the route available for drains or ducts can all move the estimate.
5. Exterior envelope and energy work
Interior demolition may expose opportunities—or obligations within the permitted scope—to improve insulation, air sealing and moisture management. Windows, doors, roofing, cladding and foundation waterproofing are not automatically part of a full-gut price. State clearly which assemblies are being opened and rebuilt.
6. Finish level and selection timing
Flooring, tile, plumbing fixtures, lighting, cabinetry, hardware and stone are controllable choices, but late selection creates substitutions, rush charges and rework. A finish schedule that names model numbers, sizes and allowances lets the contractor coordinate rough-ins and gives the homeowner a visible upgrade path.
7. Access and neighbourhood logistics
Narrow Toronto lots, shared driveways, limited street staging, attached neighbours and occupied adjacent homes can affect protection, delivery size, debris handling and working hours. Downtown, North York, Etobicoke and Scarborough projects can differ substantially even within the same municipal rules because the property and access—not the district name—drive these logistics.
8. Change management
Changes after framing or rough-ins can undo completed work. A written change should show scope, price and schedule impact before work proceeds. Ontario’s consumer guidance explains written-contract protections for home renovations and changes to estimates. Ontario consumer guidance
Budget Beyond the Construction Contract
Design and engineering
Full-gut work may require architectural or BCIN drawings, structural engineering and mechanical design. Fees depend on the building, scope, consultant team and number of revisions, so a percentage allowance should never replace a written proposal. Coordinating design with a target construction budget early is more useful than completing an unaffordable design and pricing it afterward.
Municipal permit fees
Toronto calculates many building permit fees by multiplying the applicable 2026 service index by the affected floor area. The City lists a $214.79 minimum permit fee and $11.53 per square metre for Group C, E and F interior alterations. Other line items, revisions or permits may apply. For illustration only, 2,000 square feet is about 185.8 square metres; if the entire area qualified under that line, the calculated base would be about $2,142 before other applicable fees. City of Toronto fee schedule
Testing, abatement and contingency
Older materials should be assessed before demolition when asbestos or other hazards may be present. Ontario’s asbestos regulation and construction-project guide describe duties that can apply when asbestos-containing material may be disturbed. Ontario asbestos guide
416 Construction practical guidance: carry a 10%–15% owner contingency where the scope is well investigated and conditions are relatively predictable. Carry 15%–25% at an early stage for an older home, limited investigation or substantial structural work. Contingency is not a spending target; it protects the project from genuine unknowns and should remain visible in the homeowner’s budget.
HST and living costs
All construction ranges in this guide exclude HST. Ontario’s HST rate is 13%, so the tax adds $65,000 to a $500,000 taxable construction contract. Budget temporary rent, moving, storage, extra travel, insurance changes and financing separately. Do not assume a tax rebate applies: substantial-renovation rebates use specific tax definitions and eligibility tests that should be confirmed with the Canada Revenue Agency or a tax professional. CRA GST/HST guidance
Toronto Permits, Inspections and Approvals
In Toronto, a building permit is generally required for structural or material alterations, adding or removing walls, changing window or door openings, installing or modifying plumbing or heating systems, underpinning and certain basement work. Cabinetry, millwork and like-for-like finish replacements may not require a building permit when they do not affect structure or regulated systems. The exact scope controls the answer. City of Toronto permit guidance
Toronto’s interior-alteration guide identifies the drawings and forms typically required for detached, semi-detached and townhouse work, including existing and proposed floor plans, structural or framing information, plumbing details and professional responsibility where applicable. Learn more about architectural drawings for a Toronto renovation. City interior-alteration guide
A complete application for an eligible detached, semi-detached or row-house project in the City’s House Stream has a 10-business-day review target. That is not an end-to-end permit promise. Incomplete applications have no review timeframe, and zoning, examiner comments, revisions or other applicable-law approvals can extend the process. Toronto review streams
Building inspections occur at required stages, such as framing and rough-ins before concealment, insulation and vapour barrier, plumbing or HVAC stages, and final completion. The permit holder must request the inspections listed on the permit and obtain a final inspection to close it. Toronto inspection stages and permit closing
A Toronto building permit does not replace the electrical process. Almost all electrical work requires an ESA notification before work begins; when a homeowner hires someone, the work must be performed through a Licensed Electrical Contractor who files the notification and arranges inspection. Electrical Safety Authority
The 2024 Ontario Building Code, in force from January 1, 2025, is the current provincial code framework in 2026. Designers and permit reviewers apply it to the proposed work and existing-building conditions. Government of Ontario
Do the same rules apply across the GTA?
No. The Ontario Building Code and provincial electrical regime apply across Ontario, but zoning, permit intake, fees, heritage review, tree protection, road-occupancy requirements and administrative procedures are municipal. A project in Mississauga, Oakville, Burlington, Vaughan, Richmond Hill or Pickering must be checked with that municipality; Toronto webpages should not be used as local procedural authority outside Toronto.
How Long Does a Full-Gut Renovation Take?
416 Construction planning estimate: allow roughly 10–18 months from early feasibility to move-in for many full-gut Toronto projects. A typical construction phase may take about 6–12 months; highly structural, underpinned, addition-based or premium projects may take 9–18 months or more. These are planning ranges, not guarantees.
Phase | Typical planning range | What can extend it |
|---|---|---|
Feasibility, measured survey and concept | 2–6 weeks | Missing records, zoning questions, access for investigation, slow decisions |
Design, engineering and selections | 6–16 weeks | Structural complexity, multiple revisions, incomplete finish decisions |
Permit and related approvals | 4–12+ weeks | Incomplete submission, zoning relief, applicable-law approvals, examiner comments |
Procurement and pre-construction | 4–12 weeks, often overlapping | Custom windows, equipment, cabinetry, stone or unavailable finishes |
Construction | 6–12 months typical | Concealed conditions, changes, inspections, utility work, long-lead items |
Complex construction | 9–18+ months | Underpinning, addition, extensive structure, heritage or envelope work |
A critical-path schedule should connect selections, shop drawings, inspections and delivery dates to the work sequence. The schedule should also contain decision deadlines: a fixture chosen after the wall is closed can trigger demolition, a permit revision and a new inspection.
Can You Live in the House During a Full Gut?
Usually, living in the house is impractical and can be unsafe during a true full gut. Demolition dust, open framing, temporary electrical service, interrupted plumbing and heating, blocked exits, noise and limited kitchen or bathroom access make normal occupancy difficult. The contractor’s insurance, site rules and permit conditions may also affect access.
Phasing can work when the scope is genuinely separable and one safe, code-compliant portion remains served, but it generally lengthens construction and increases protection, temporary works and remobilization. Compare those added costs with temporary housing before assuming that staying saves money.
Full Gut, Addition or Rebuild?
Option | Best fit | Main budget caution |
|---|---|---|
Full-gut renovation | Existing footprint and shell can support the desired home | Concealed conditions and system integration remain material risks |
Addition plus renovation | More floor area is essential and zoning/site conditions allow it | New foundation, envelope tie-ins and broader approvals are separate from interior-gut pricing |
Demolish and rebuild | Existing structure or geometry cannot economically meet the program | Demolition, approvals, new services, full new-build scope and longer pre-construction must be compared on equal assumptions |
Do not compare a full-gut allowance with a new-home figure that includes different floor area or excludes demolition, design, site work and HST. The decision is explored in more detail in Renovate or Tear Down? Toronto Custom Home Cost Guide.
A Seven-Step Budgeting Process
Define the program. List required rooms, layout changes, performance goals, must-have finishes and work that can wait.
Confirm planning constraints. Review zoning, heritage status, surveys, title information and whether the project stays within the existing shell.
Investigate the building. Measure the house; review structure, electrical, plumbing and HVAC; scan drains where relevant; and make selective openings before relying on a low contingency.
Build a coordinated design. Align architectural, structural and mechanical information, then choose enough finishes to price a defined scope.
Separate the budget. Show hard construction, design and engineering, permits, testing or abatement, temporary housing, contingency and HST on different lines.
Compare proposals on one scope. Reconcile allowances, exclusions, labour, supervision, waste, temporary work and schedule rather than comparing bottom-line totals alone.
Freeze decisions and control changes. Approve a baseline budget and schedule, then document each change with cost and time before authorizing it.
Common Budget Mistakes and Warning Signs
Using a resale listing’s square footage without confirming the actual renovated area.
Treating an early allowance as a fixed price before drawings and selections exist.
Comparing one quote that includes mechanical replacement with another that keeps existing systems.
Leaving HST, temporary housing, design, permits or contingency outside the financing plan.
Starting demolition before the required permit or ESA notification is in place.
Allowing structural, waterproofing or hazardous-material assumptions to remain unwritten.
Selecting fixtures after rough-in locations are approved or walls are closed.
Accepting large vague allowances with no quantity, unit rate, product level or reconciliation method.
Ignoring open permits at final completion. Toronto notes that open permits can impede a future property transaction. City of Toronto
Warning signs include pressure to start regulated work without approvals, a quote that is materially lower but cannot explain inclusions, cash-only requests, no written change process, no identified electrical contractor, and reluctance to coordinate drawings with field conditions.
416 Construction Practical Guidance
For a serious 2026 feasibility study, model three numbers: a base scope, a likely scope and a high-risk scope. Keep owner upgrades separate from unknown-condition contingency. Then test the high case against financing and property value before committing to design choices that cannot be unwound cheaply.
Ask the design-build team to produce a scope matrix showing what happens to every major assembly and system: foundation, structure, exterior walls, windows, roof, insulation, drainage, electrical, plumbing, HVAC, kitchens, bathrooms and finishes. That document is more useful than a generic promise to “gut everything.”
Before the construction contract, resolve the highest-impact unknowns that can be investigated safely. Not every wall needs to be opened, but a targeted structural review, service-capacity check, drain assessment and hazardous-material strategy can justify a lower contingency and make bids more comparable.
When to Contact a Professional
Architect or BCIN designer: when layouts, code analysis, permit drawings or design coordination are required. Which professional may prepare the documents depends on the building and scope.
Professional engineer: before removing or altering load-bearing walls, modifying beams or foundations, underpinning, or addressing significant structural distress.
Licensed Electrical Contractor and ESA: before electrical work begins; the contractor should file the notification and arrange inspections.
Municipality or planner: when zoning, heritage, tree, access, committee or other local approvals could affect the design.
Surveyor: when property boundaries, setbacks, additions, rights-of-way or conflicting site information matter.
Hazardous-material consultant: before disturbing suspect materials in an older building.
Lawyer, accountant or insurer: for contract interpretation, title issues, tax-rebate eligibility, financing or coverage questions.
Design-build contractor: during feasibility, so design, engineering, permit strategy, procurement and construction pricing develop together.
The Bottom Line
How much does a full-gut home renovation cost in Toronto in 2026? For early planning, many homeowners should use roughly $250–$450+ per square foot in hard construction costs, excluding 13% HST, while recognizing that a controlled project can be lower and complex structural or premium work can exceed $425–$600+ per square foot. The useful number is not the narrowest range—it is the complete cash requirement built from a defined scope.
416 Construction can coordinate architectural design, engineering, permit planning, budgeting and construction through one Toronto/GTA design-build team. A coordinated feasibility review helps identify structural, systems and approval risks before they become expensive site changes.
Informational disclaimer: This article provides general 2026 planning information, not a quotation, legal opinion, engineering advice, code interpretation or tax advice. Requirements and costs depend on the property, design and authority having jurisdiction. Confirm the current rules and fees with the City of Toronto or the applicable GTA municipality, ESA and qualified project professionals before proceeding.
Frequently Asked Questions
What is the average cost of a full-gut renovation in Toronto in 2026?
There is no single official average. For early 2026 planning, 416 Construction recommends roughly $250–$450+ per square foot for many full-gut Toronto renovations, excluding 13% HST. A controlled project may be about $225–$300 per square foot; complex structure, underpinning, premium finishes or envelope work can reach $425–$600+ per square foot.
How much would it cost to gut-renovate a 1,500-square-foot Toronto house?
At the broad $250–$450 per-square-foot planning band, 1,500 square feet represents about $375,000–$675,000 in hard construction before HST, or $423,750–$762,750 after 13% HST. Design, engineering, permits, testing or abatement, temporary housing, financing and contingency are additional unless a written proposal includes them.
Does a full-gut renovation price include HST?
Do not assume it does. All planning ranges in this guide exclude Ontario’s 13% HST. A contractor proposal should state its tax treatment clearly. For example, 13% HST adds $65,000 to a $500,000 taxable construction contract. Design, consultant and other taxable services may also attract HST, depending on the supplier and service.
What is included in a full-gut home renovation?
A defined full-gut scope often includes demolition to framing, layout reconstruction, broad electrical, plumbing and HVAC work, insulation where specified, drywall, kitchens, bathrooms and interior finishes. The term itself is not standardized. Exterior walls, windows, roofing, underpinning, additions, appliances, hazardous-material abatement, permits and design may be excluded, so rely on the written scope.
How much contingency should I carry?
416 Construction practical guidance is about 10%–15% when drawings are coordinated, key areas have been investigated and conditions are predictable. An older Toronto house, limited investigation or substantial structural scope may justify 15%–25% at the early-budget stage. Keep contingency separate from elective finish upgrades and release it only when risk actually retires.
Do I need a building permit for a full-gut renovation in Toronto?
Usually, yes, because a true full gut commonly includes wall changes, structural alterations, plumbing or heating modifications, or other work Toronto identifies as permit-required. Finish-only work may be exempt when it does not affect structure or regulated systems. The exact drawings and permits depend on the proposed scope, so confirm with Toronto Building before starting.
Does a Toronto building permit cover electrical work?
No. Electrical work is handled separately through the Electrical Safety Authority. Almost all electrical work requires an ESA notification before it begins. When you hire someone, the work must go through a Licensed Electrical Contractor, who files the notification, coordinates inspections and provides the applicable Certificate of Acceptance.
How long does a full-gut renovation take in Toronto?
For planning, allow about 10–18 months from early feasibility to move-in for many projects. Construction alone is often about 6–12 months; structural, underpinned, addition-based or premium work can take 9–18 months or longer. Design revisions, zoning, permit comments, long-lead materials, inspections, utilities and concealed conditions determine the actual schedule.
Can I live in my house during a full-gut renovation?
Usually not comfortably or safely. A true full gut can interrupt water, heating, electrical service, kitchens, bathrooms and safe exits while creating dust and noise. Carefully phased occupancy is possible only when a genuinely separate, safe and serviced area can remain. Phasing often lengthens the schedule and adds protection and temporary-work costs.
Why do older Toronto homes cost more to gut-renovate?
Age alone is not the issue; uncertainty is. Older houses can conceal structural movement, masonry damage, moisture, obsolete wiring, old piping, uneven floors, inaccessible ducts and hazardous materials. Investigation can identify some conditions before pricing, but the homeowner should still carry a larger contingency until demolition exposes the remaining assemblies.
Is a full-gut renovation cheaper than demolishing and rebuilding?
Sometimes, but not automatically. Renovation can preserve the foundation, shell and neighbourhood fit, while a rebuild can be more rational when structure, floor levels or geometry cannot support the desired home. Compare equal floor area and include demolition, design, approvals, services, site work, temporary housing, contingency and HST for both options.
How much is a Toronto building permit for an interior renovation?
Toronto’s 2026 fee schedule lists a $214.79 minimum permit fee and an $11.53-per-square-metre service index for Group C, E and F interior alterations. The City applies the correct line items to the affected area and scope; plumbing, mechanical, revisions or other fees may apply. Request a project-specific calculation rather than budgeting only the minimum.
Do Toronto renovation rules apply in Mississauga, Oakville or Vaughan?
Not entirely. The Ontario Building Code and provincial electrical rules apply across Ontario, but each municipality administers zoning, permit intake, fees, heritage, tree and other local processes. For properties in Mississauga, Oakville, Burlington, Vaughan, Richmond Hill or Pickering, use that municipality’s current pages and confirm requirements with its building department.
When do I need an architect, BCIN designer or engineer?
Permit drawings may be prepared by an appropriately qualified architect, professional engineer, BCIN designer or other eligible person, depending on the building and scope. Structural changes such as bearing-wall removal, new beams, underpinning or foundation alterations typically require engineering. Confirm professional responsibilities before design begins so drawings, fees and schedule are coordinated.
Sources and Further Reading
City of Toronto: When Do I Need a Building Permit? — Toronto.
City of Toronto: Interior Alterations — Toronto.
City of Toronto: Building Permit Fees — Toronto.
City of Toronto: Building Permit Review Streams — Toronto.
City of Toronto: When to Call for Inspection of Small Buildings — Toronto.
City of Toronto: Closing Building Permits — Toronto.
Government of Ontario: 2024 Ontario Building Code — Ontario.
Government of Ontario: Guide to the Regulation Respecting Asbestos on Construction Projects and in Buildings and Repair Operations — Ontario.
Government of Ontario: Your Rights When Starting Home Renovations or Repairs — Ontario.
Electrical Safety Authority: Notifications and Inspections — Ontario.
Canada Revenue Agency: General Information for GST/HST Registrants — Canada.
Google Search Central: Article Structured Data — Search guidance.
Google Search Central: Documentation Updates — Search guidance.
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