What Inspections Are Required When Building a Custom Home in Toronto?
- 416 Construction
- Aug 8
- 19 min read
2026 Complete Guide to Toronto Building, Plumbing, HVAC, Electrical and Occupancy Inspections
Building a custom home in Toronto involves much more than receiving a building permit and completing the construction. At specific stages of the project, work must stop so that municipal building inspectors, Electrical Safety Authority inspectors, professional engineers and other authorities can review critical components before they are covered or construction proceeds.
Missing an inspection can result in:
Work being uncovered or demolished
Concrete pours being delayed
Drywall being removed
Construction deficiencies
Failed inspections
Stop-work orders
Delayed occupancy
Open building permits
Problems during refinancing or resale
Additional labour and professional fees
Understanding the inspection sequence before construction begins helps the homeowner, builder and trades coordinate the project correctly.
Quick Answer: What Inspections Are Required for a Toronto Custom Home?
A typical new custom home in Toronto may require the following inspections:
Excavation and soil-bearing inspection
Footing inspection
Foundation inspection before backfilling
Underground plumbing inspection
Underground electrical inspection, where applicable
Drainage, waterproofing and foundation preparation review
Structural framing inspection
Structural engineering field reviews
Plumbing rough-in inspection
HVAC and mechanical rough-in inspection
Fire-separation and fire-stopping inspection
ESA electrical service inspection
ESA electrical rough-in inspection
Insulation and vapour-barrier inspection
Air-barrier and energy-efficiency verification
Interior plumbing inspection
Occupancy inspection
ESA final electrical inspection
Final building inspection
Lot-grading and exterior completion review
Pre-delivery inspection for applicable Tarion-enrolled homes
Not every custom home follows exactly the same sequence. The required inspections depend on the approved plans, construction method, site conditions and permit scope.
The permit holder is responsible for notifying the appropriate authority when work reaches an inspection stage. Ontario guidance states that municipalities inspect projects at prescribed stages such as footings and structural framing, and that the permit holder or their representative must request those inspections. (Ontario)
Why Are Custom-Home Inspections Required?
Inspections help confirm that construction is generally proceeding in accordance with:
The approved permit drawings
The Ontario Building Code
Applicable municipal requirements
Approved structural drawings
Approved mechanical drawings
Electrical-safety requirements
Manufacturer installation requirements
Professional engineering designs
A building permit does not mean the City has approved every piece of work before construction begins. The permit is based primarily on the submitted plans and documentation.
Inspections verify important parts of the actual construction as the project progresses.
Who Performs the Inspections?
Several different parties may inspect a Toronto custom home.
Toronto Building Inspectors
Toronto Building inspectors review work covered by the municipal building permit, which may include:
Excavation and footings
Foundations
Structural framing
Plumbing
HVAC
Fire separations
Insulation
Occupancy
Final completion
Electrical Safety Authority Inspectors
The Electrical Safety Authority, commonly called ESA, administers electrical inspections in Ontario.
ESA inspections are separate from Toronto Building inspections and may include:
Underground electrical
Electrical service
Rough-in wiring
Final electrical work
Structural Engineers
The project’s structural engineer may conduct field reviews of work designed under their responsibility.
These reviews may include:
Reinforcement
Structural steel
Beams
Columns
Load-bearing framing
Underpinning
Shoring
Connections
Engineered wood systems
Changes made during construction
Mechanical Engineers and Designers
Mechanical consultants may review:
HVAC layouts
Ductwork
Equipment
Ventilation
Heat-loss and heat-gain requirements
Hydronic systems
Snow-melting systems
Radiant heating
Mechanical changes from the permit drawings
Surveyors and Grading Consultants
An Ontario Land Surveyor or grading consultant may verify:
Foundation location
Building setbacks
Foundation elevations
Finished grades
Lot drainage
As-built conditions
Tarion and the Builder
For an applicable new home enrolled in Ontario’s new-home warranty program, the builder conducts a pre-delivery inspection with the purchaser before possession. Tarion describes the PDI as a walkthrough used to identify damaged, missing, incomplete or non-functioning items before possession. (Tarion)
Toronto Custom-Home Inspection Sequence
The following sequence reflects a typical detached custom-home project. Some inspections may be combined, repeated or added depending on the permit and site conditions.
1. Excavation and Soil-Bearing Inspection
The excavation stage prepares the site for the home’s foundation.
Before the footings are constructed, the excavated soil must be suitable to support the proposed building.
The review may consider:
Excavation depth
Soil-bearing conditions
Undisturbed native soil
Uncontrolled fill
Groundwater
Bedrock
Excavation stability
Distance from neighbouring foundations
Compliance with the structural design
Who Inspects the Excavation?
Depending on the project, the excavation may be reviewed by:
A Toronto Building inspector
The structural engineer
A geotechnical engineer
The shoring engineer
Where the building is supported on engineered fill, poor soil, caissons, helical piles or specialized foundations, a geotechnical or structural engineer may need to confirm the bearing conditions.
Common Reasons for Delays
Soft or disturbed soil
Unexpected fill
High groundwater
Excavation at the wrong elevation
Insufficient working space
Excavation too close to the neighbouring property
Missing shoring
Bedrock at an unexpected depth
Soil that does not match the geotechnical report
The footing forms should not be installed over unsuitable soil until the condition has been reviewed and resolved.
2. Footing Inspection
Footings distribute the weight of the house into the soil.
Toronto identifies footings as a required inspection stage after the footing formwork is complete and before the concrete is poured. (Toronto)
The inspector may review:
Footing width
Footing thickness
Location
Elevation
Step footings
Reinforcement
Keyways
Column pads
Soil conditions
Clearances from the property line
Compliance with approved structural drawings
When Should the Inspection Be Requested?
The footing inspection should be scheduled when:
The excavation is complete
Forms are installed
Reinforcement is installed
The footing area is clean
Approved drawings are available
Concrete has not yet been poured
Concrete should not be ordered until the inspection has been coordinated.
What Happens If the Footing Inspection Fails?
The contractor may need to:
Widen the footing
Add reinforcing steel
Correct elevations
Remove loose soil
Extend a step footing
Obtain a structural-engineering detail
Revise the foundation design
Pouring concrete before inspection can lead to requests for testing, engineering confirmation or removal of work.
3. Foundation Inspection
After the footings are poured, the foundation walls are constructed.
Toronto lists the foundation as a required inspection stage after completion. Ontario’s prescribed-notice rules also require notification after substantial completion of the footings and foundations and before backfilling. (Toronto)
The foundation inspection may review:
Foundation-wall dimensions
Reinforcement
Wall thickness
Openings
Lintels
Anchor bolts
Beam pockets
Column locations
Dampproofing or waterproofing
Foundation drainage
Drainage tile
Stone coverage
Window wells
Foundation insulation
Exterior drainage components
Do Not Backfill Too Early
The foundation should not be backfilled until:
Required municipal inspections are completed
Waterproofing is installed
Drainage tile is installed
Foundation walls have adequate strength
Required structural supports are in place
The foundation is properly braced where necessary
Backfilling too early can:
Damage foundation walls
Conceal deficiencies
Damage drainage tile
Create waterproofing failures
Require excavation to expose work again
4. Underground Plumbing Inspection
Underground plumbing is installed before the basement slab is poured.
This can include:
Building drains
Sanitary piping
Storm piping
Floor drains
Sump-pump connections
Backwater valves
Cleanouts
Underground plumbing for bathrooms
Future plumbing rough-ins
Radon rough-ins where specified
Water-service entry
The inspector may review:
Pipe sizes
Pipe slopes
Fittings
Cleanouts
Venting provisions
Bedding
Supports
Backwater-valve location
Drainage layout
Testing
Testing Before Inspection
The plumbing contractor may be required to complete a test using:
Water
Air
Another approved method
The piping must remain visible. It should not be covered with gravel or concrete until the inspection is completed.
Common Underground Plumbing Problems
Incorrect slope
Missing cleanouts
Incorrect fittings
Poor pipe bedding
Improper venting
Inaccessible backwater valve
Plumbing installed differently from the permit drawings
Missing test
Pipe damaged by other trades
5. Underground Electrical Inspection
An underground electrical inspection may be required where wiring or conduit will be buried or covered.
Examples include:
Underground service conduit
Garage feeders
Landscape wiring
Pool equipment feeds
Electric gate wiring
Detached accessory structures
Exterior lighting conduits
Driveway heating systems
Future EV-charging infrastructure
ESA identifies trench or underground wiring as a type of electrical inspection that may be required before the installation is covered. (ESASafe)
The ESA inspector may review:
Burial depth
Conduit type
Cable type
Mechanical protection
Separation from other services
Warning tape
Grounding
Entry points
Approved materials
The trench must remain open until approval is received.
6. Waterproofing and Foundation Drainage Review
Waterproofing may be reviewed as part of the foundation inspection or through additional project-specific reviews.
The assembly may include:
Foundation dampproofing
Waterproofing membrane
Protection board
Drainage membrane
Drainage tile
Filter fabric
Clear stone
Sump-pump system
Window-well drainage
Foundation insulation
Why This Inspection Matters
Once the foundation is backfilled, it becomes difficult and expensive to correct:
Gaps in waterproofing
Damaged membranes
Missing drainage tile
Improper window-well drainage
Poor drainage-stone placement
Unsealed penetrations
Incorrect sump connections
The builder should photograph the waterproofing and drainage installation before backfilling.
7. Foundation Location and Elevation Survey
Many custom-home projects require survey confirmation after the foundation is installed.
An Ontario Land Surveyor may confirm:
Foundation location
Front-yard setback
Rear-yard setback
Side-yard setbacks
Foundation dimensions
Finished floor elevation
Top-of-foundation elevation
Relationship to property boundaries
This step is particularly important where:
The house is close to minimum setbacks
Minor variances were approved
The lot is narrow
The design includes a shared driveway
The property has easements
The grading plan sets specific elevations
Discovering a setback problem after the framing is complete can be extremely costly.
8. Structural Framing Inspection
The structural framing inspection is one of the most significant inspections in the custom-home process.
Toronto generally requires the structural framing inspection after the framing is complete, including the rough-in of plumbing and HVAC. (Toronto)
The inspector may review:
Exterior wall framing
Interior load-bearing walls
Floor joists
Roof framing
Beams
Columns
Headers and lintels
Engineered wood products
Stair openings
Fire blocking
Draft stopping
Fasteners
Framing anchors
Structural connections
Point-load support
Approved drawings
What Must Be Complete?
Before requesting framing inspection:
Structural framing should be complete
Plumbing rough-in should be substantially complete
HVAC rough-in should be substantially complete
Required structural-engineering reviews should be available
Major penetrations should be complete
Fire blocking should be installed
The building should be safely accessible
Concealed work must remain exposed
Common Framing Deficiencies
Cut or drilled joists
Missing joist hangers
Incorrect nails
Missing posts
Unsupported point loads
Beams installed differently from the drawings
Improper stair framing
Missing blocking
Over-notched studs
Inadequate lintels
Missing hold-downs
Unapproved roof changes
Mechanical ducts passing through structural members
Plumbing cuts through engineered framing
These problems are easier to correct before insulation and drywall.
9. Structural Engineer’s Field Reviews
The City building inspection does not replace the structural engineer’s professional field reviews.
The engineer may be required to review:
Reinforcing steel
Foundation changes
Structural steel
Engineered beams
Flush-beam connections
Columns
Steel-to-wood connections
Moment frames
Tall walls
Roof framing
Underpinning
Shoring
Helical piles
Structural changes
Site instructions
What Is a Field Review Report?
A field review report documents the engineer’s observations and may:
Confirm general conformity with the structural drawings
Identify deficiencies
Provide corrective details
Record approved changes
Request photographs or testing
Confirm completion of corrective work
The builder should keep all field-review reports in the project file.
Do Site Changes Need Approval?
Yes. Structural framing should not be changed based solely on a trade’s preference.
Common changes requiring review include:
Moving a beam
Removing a post
Drilling a steel beam
Cutting a joist
Changing a window opening
Enlarging a stair opening
Altering a roof
Moving a load-bearing wall
Changing footing dimensions
The engineer may need to issue a site instruction, sketch or revised drawing.
10. Plumbing Rough-In Inspection
The plumbing rough-in inspection occurs before plumbing is concealed by insulation, drywall, ceilings or cabinetry.
The inspection may review:
Drain, waste and vent piping
Water-supply piping
Plumbing vents
Pipe sizes
Pipe slopes
Cleanouts
Supports
Protection plates
Fixture locations
Shower and bathtub connections
Laundry connections
Floor drains
Hose bibs
Pressure testing
Common Plumbing Deficiencies
Incorrect venting
Improper pipe slope
Missing cleanouts
Unsupported piping
Incorrect fitting orientation
Water lines installed too close to the exterior
Missing nail plates
Improper fixture connection
Unapproved changes from the plumbing drawings
Missing pressure or drainage test
The work should remain visible until accepted.
11. HVAC and Mechanical Rough-In Inspection
The HVAC rough-in inspection generally occurs before ductwork and mechanical systems are concealed.
The review may include:
Supply-air ducts
Return-air ducts
Exhaust ducts
Bathroom fans
Kitchen exhaust
Furnace or air-handler location
Heat pumps
HRV or ERV
Combustion-air provisions
Dryer exhaust
Fire dampers
Duct clearances
Mechanical-room layout
Ventilation requirements
Common HVAC Problems
Missing return-air pathways
Improper bathroom-fan exhaust
Exhaust terminating in an attic
Ducts compressed into structural spaces
Oversized framing penetrations
Missing fire dampers
Incorrect equipment clearances
Poorly sealed ducts
Unapproved relocation of equipment
Insufficient mechanical-room access
The HVAC installation should follow the approved mechanical design and equipment specifications.
12. Fire-Separation and Fire-Stopping Inspection
Fire separations are particularly important where a custom home includes:
An attached garage
A secondary suite
A basement apartment
A furnace room
Multiple dwelling units
Service penetrations
Shafts
Structural steel requiring protection
Toronto identifies fire separations as an inspection stage after wall, floor and shaft separations and fire stopping are completed but before interior finishes conceal the work. (Toronto)
The inspector may review:
Required drywall layers
Fire-resistance ratings
Fire-rated doors
Door closers
Fire stopping
Penetration seals
Continuity of separations
Garage-to-house separation
Service shafts
Fire dampers
Protected structural members
Why Fire Stopping Is Often Missed
Every pipe, wire, duct and conduit passing through a required fire separation may need an approved fire-stop system.
Ordinary spray foam is not automatically an acceptable fire-stop material.
The product and installation should match the required tested assembly or approved system.
13. ESA Electrical Service Inspection
The service inspection reviews the main electrical service before connection or energization.
ESA explains that this inspection covers wiring to the meter, the main disconnecting equipment and service grounding. For new installations, the service and rough-in inspections may sometimes occur together. (ESASafe)
The inspection may include:
Meter base
Service conductors
Main disconnect
Main panel
Grounding
Bonding
Service mast
Underground service conduit
Equipment ratings
Clearances
Utility connection requirements
Toronto Hydro may require ESA authorization before the permanent electrical service is energized.
14. ESA Electrical Rough-In Inspection
The electrical rough-in inspection occurs after branch-circuit wiring and outlet boxes are installed but before wiring is concealed by insulation, vapour barrier or drywall. (ESASafe)
The ESA inspector may review:
Cable type
Cable support
Outlet boxes
Junction boxes
Panel wiring
Circuit layout
Grounding and bonding
Smoke-alarm wiring
Carbon-monoxide-alarm wiring
Kitchen circuits
Bathroom circuits
Laundry circuits
Heating equipment
EV-charging provisions
Exterior wiring
Protection from nails and screws
Electrical Work Must Remain Exposed
Do not install:
Insulation
Vapour barrier
Drywall
Ceilings
Permanent wall finishes
over uninspected wiring.
ESA states that the rough-in should be ready with branch-circuit wiring and outlet boxes installed while the wiring remains visible. (ESASafe)
15. Insulation and Vapour-Barrier Inspection
Toronto requires an inspection after insulation and vapour barrier are complete and before the work is concealed by interior finishes. (Toronto)
The inspector may review:
Insulation type
Insulation thickness
Insulation continuity
R-values
Vapour-barrier continuity
Sealed penetrations
Rim-joist insulation
Attic insulation
Sloped-ceiling insulation
Basement insulation
Garage separation
Spray-foam installation
Window and door perimeter insulation
Common Insulation Deficiencies
Missing insulation behind pipes
Compressed batt insulation
Gaps around electrical boxes
Poorly sealed rim joists
Missing vapour barrier
Unsealed vapour-barrier joints
Insufficient attic insulation
Spray foam not installed to the required thickness
Missing protection over spray foam
Thermal bridging at structural steel
Air leakage around windows and doors
Drywall should not begin until this inspection is accepted.
16. Air-Barrier and Energy-Efficiency Verification
Modern custom homes must comply with applicable energy-efficiency requirements.
The project may include review or documentation relating to:
Continuous air barrier
Insulation values
Window performance
Door performance
Mechanical efficiency
Heat-recovery ventilation
Thermal bridging
Air sealing
Equipment efficiency
Energy-efficiency forms
Approved energy-compliance pathway
Depending on the design, additional testing may include:
Blower-door testing
Duct-leakage testing
Equipment commissioning
Radiant-system testing
Hydronic-system pressure testing
These tests may not all be municipal inspections, but they can be essential to confirming building performance.
17. Interior Plumbing and Fixture Inspection
A later plumbing inspection may verify completed fixtures and systems.
This may include:
Toilets
Sinks
Faucets
Bathtubs
Showers
Floor drains
Hot-water equipment
Shut-off valves
Backflow protection
Sump pumps
Backwater valves
Water-service operation
Fixture drainage
Plumbing access panels
The inspector may confirm that the completed plumbing system is operational and generally consistent with the permit.
18. Occupancy Inspection
A custom home cannot automatically be occupied because it appears nearly complete.
An occupancy inspection determines whether the home has reached the minimum level of completion required for safe occupancy.
The exact requirements depend on the project and permit.
Typical occupancy items may include:
Safe building access
Required guards and handrails
Complete stairs
Working plumbing
Working heating
Operational electrical service
Smoke alarms
Carbon-monoxide alarms
Fire separations
Required exits
Safe bedrooms
Functional bathrooms
Required life-safety systems
Required professional reports
Required inspections completed
Occupancy Does Not Always Mean the Permit Is Closed
A home may receive permission for occupancy while some non-life-safety work remains incomplete.
Outstanding work may include:
Landscaping
Exterior finishes
Final grading
Certain decks
Driveway work
Minor interior deficiencies
Final municipal documentation
A final inspection is still required to close the permit.
19. ESA Final Electrical Inspection
The ESA final inspection should be requested once the electrical installation is complete.
ESA states that the final inspection should be requested as soon as possible after completion of the installation. (ESASafe)
The inspector may review:
Receptacles
Switches
Light fixtures
Panels
Circuit identification
GFCI protection
AFCI protection
Smoke alarms
Carbon-monoxide alarms
Exterior electrical
Equipment connections
Grounding
Bonding
Covers and plates
Installed appliances where applicable
Deficiencies must be corrected before the electrical notification is finalized.
20. Final Building Inspection
A final building inspection is required after the permitted work is complete.
Toronto states that property owners must schedule a final inspection to close the permit. Open permits may interfere with future real-estate transactions and may complicate later permit applications. (Toronto)
The final inspection may consider:
Completion of permit work
Outstanding deficiencies
Guards and handrails
Exterior stairs
Decks
Smoke alarms
Carbon-monoxide alarms
Fire separations
Plumbing completion
Mechanical completion
Exterior cladding
Building exits
Site safety
Required reports
Earlier inspection deficiencies
Why Closing the Permit Matters
An open permit can create problems when:
Selling the property
Refinancing
Applying for a future permit
Obtaining insurance
Establishing legal occupancy
Resolving warranty matters
The builder should obtain confirmation that required permit inspections are complete and the permit has been closed.
21. Lot-Grading and Exterior Completion Review
The final exterior review may involve:
Finished grades
Drainage swales
Downspout discharge
Retaining walls
Driveway elevations
Walkways
Window wells
Catch basins
Sump discharge
Landscaping around drainage routes
Compliance with the approved grading plan
An as-built grading certificate or survey may be required depending on the project and municipal conditions.
Common Grading Problems
Water draining toward the house
Water draining onto neighbouring properties
Blocked swales
Retaining walls installed at different elevations
Driveways sloping improperly
Window wells below grade
Downspouts connected incorrectly
Landscaping changing approved elevations
Air-conditioner pads blocking drainage
Landscaping contractors should receive and follow the approved grading plan.
22. Pre-Delivery Inspection
Where the home is enrolled with Tarion and will be delivered to a purchaser, the builder conducts a pre-delivery inspection before possession.
Tarion identifies the PDI as a mandatory walkthrough for enrolled new homes. Its purpose is to document anything damaged, missing, incomplete or not functioning before possession. (Tarion)
The PDI may include:
Floors
Walls
Ceilings
Windows
Doors
Cabinetry
Countertops
Plumbing fixtures
Electrical fixtures
Heating and cooling
Appliances
Exterior finishes
Balconies and decks
Garage
Landscaping, where complete
Demonstration of home systems
Is the PDI a Building-Code Inspection?
No.
The PDI does not replace:
Toronto Building inspections
ESA inspections
Engineering reviews
Occupancy approval
Final permit closure
It is a separate inspection focused on the condition and completeness of the home before possession.
Ontario’s new-home warranty is provided by the builder and backed by Tarion for qualifying enrolled homes. (Tarion)
Inspection Responsibility Chart
Inspection or review | Typical reviewing authority |
Excavation and bearing conditions | Toronto Building, structural engineer or geotechnical engineer |
Footings | Toronto Building and structural engineer where required |
Foundation | Toronto Building and structural engineer where required |
Underground plumbing | Toronto Building plumbing inspector |
Underground electrical | ESA |
Foundation survey | Ontario Land Surveyor |
Structural framing | Toronto Building |
Structural field reviews | Structural engineer |
Plumbing rough-in | Toronto Building plumbing inspector |
HVAC rough-in | Toronto Building mechanical inspector |
Fire separations | Toronto Building |
Electrical service | ESA |
Electrical rough-in | ESA |
Insulation and vapour barrier | Toronto Building |
Energy-performance tests | Energy consultant or qualified contractor |
Occupancy | Toronto Building |
Electrical final | ESA |
Final building | Toronto Building |
Final grading | City, surveyor or grading consultant |
Pre-delivery inspection | Builder and purchaser |
How Much Do Custom-Home Inspections Cost?
Municipal inspection costs are generally associated with the building-permit process rather than charged separately for every routine inspection.
However, the complete project budget may need to include:
Building-permit fees
ESA notification and inspection fees
Structural-engineering field reviews
Mechanical-engineering reviews
Geotechnical inspections
Concrete testing
Soil testing
Compaction testing
Surveyor visits
Foundation location survey
As-built grading certificate
Air testing
HVAC commissioning
Specialty inspection reports
Reinspection fees or additional professional costs may arise where:
The work is not ready
An inspection fails
Work is concealed
The inspector cannot access the site
Required documentation is missing
Construction differs from approved plans
Multiple return visits are needed
Inspection allowances should be included in the project budget from the beginning.
How Long Does It Take to Get a Toronto Building Inspection?
The City allows permit holders or their representatives to request, reschedule and cancel inspections through its building-inspection system. (Toronto)
Ontario guidance states that municipal building officials are generally required to conduct prescribed inspections within two working days after being notified, although practical scheduling can vary based on the inspection type, request timing, site readiness and workload. (Ontario)
Builders should avoid scheduling critical work based on the assumption that an inspection will occur immediately. Concrete pours, insulation, drywall and backfilling should be coordinated with realistic inspection windows.
Who Is Responsible for Booking Inspections?
The permit holder is ultimately responsible for making sure required inspections are requested.
In practice, the task may be managed by:
The general contractor
The site supervisor
The project manager
The homeowner
The applicable trade
The architect
The engineer
The construction contract should clearly assign responsibility.
A Strong Inspection Process Should Record:
Permit number
Inspection type
Date requested
Scheduled date
Inspector’s name
Inspection result
Deficiencies
Required corrections
Reinspection date
Supporting photographs
Engineering reports
ESA documents
Final permit status
Verbal confirmation alone should not be the only project record.
What Does “Passed With Deficiencies” Mean?
Inspection terminology can vary.
An inspector may:
Accept the inspected stage
Accept it subject to minor corrections
Identify deficiencies
Require additional documentation
Request a reinspection
Issue an order
Require work to be uncovered
Refer the matter to an engineer
The builder should obtain clear confirmation of:
Whether construction may proceed
What must be corrected
Whether photographs are acceptable
Whether a reinspection is required
Whether an engineer’s letter is required
The existence of an inspection does not automatically mean the work was fully accepted.
What Happens If Work Is Covered Before Inspection?
Concealing work before inspection is one of the most expensive avoidable mistakes on a custom-home project.
The inspector may require:
Drywall removal
Insulation removal
Concrete removal
Excavation around foundations
Ceiling openings
Floor openings
Photographic evidence
Testing
Engineering review
Destructive investigation
The Ontario Building Code Act gives inspectors authority in certain circumstances to require work to be uncovered where it cannot otherwise be inspected. (Ontario)
The safest rule is:
Do not cover, pour, backfill or finish any inspection-dependent work until approval to proceed has been confirmed.
Why Do Custom Homes Fail Inspections?
The most common causes include:
Incomplete Work
The inspection is requested before the trade has finished.
Plans Not Available
Approved drawings and revisions are not accessible to the inspector.
Unapproved Changes
The home has been constructed differently from the permit drawings.
Poor Trade Coordination
Plumbing or HVAC penetrations damage structural framing.
Missing Engineering Documentation
Site instructions or field-review reports are unavailable.
Work Is Concealed
Insulation, drywall, concrete or backfill covers the work.
Incorrect Materials
Products do not match approved assemblies or code requirements.
Missing Tests
Plumbing, gas, hydronic or other systems have not been tested.
Unsafe Site Conditions
The inspector cannot safely access the work.
Previous Deficiencies Remain Open
Corrections from an earlier inspection were not completed.
How Can a Builder Prepare for a Successful Inspection?
Before requesting an inspection:
Review the approved drawings.
Confirm the trade has completed the work.
Complete an internal quality-control inspection.
Correct visible deficiencies.
Verify that the work remains exposed.
Place approved drawings on site.
Organize engineering reports and site instructions.
Confirm required tests are active.
Provide safe access.
Remove debris from the inspection area.
Make ladders and temporary stairs safe.
Confirm the correct permit and inspection type.
Have a knowledgeable supervisor present.
Record the result in writing.
Complete deficiencies before the next stage.
A municipal inspector should not be used as the builder’s primary quality-control system.
The contractor should inspect the work before calling the authority.
Municipal Inspection vs. Independent Home Inspection
A municipal building inspection and a private home inspection serve different purposes.
Municipal Building Inspection
A municipal inspection focuses on the permitted work and applicable code requirements at prescribed construction stages.
Independent Home Inspection
A private home inspector may review:
Workmanship
Building-envelope details
Moisture concerns
Roofing
Windows
Interior finishes
Mechanical operation
Plumbing fixtures
Electrical devices
Overall completion
A homeowner may choose to hire an independent inspector:
Before insulation
Before drywall
Before occupancy
Before the Tarion PDI
Near the end of the warranty period
A private inspection does not replace required municipal or ESA inspections.
Should the Homeowner Attend Inspections?
The homeowner does not normally need to attend every City or ESA inspection.
However, homeowners should receive regular reports from the builder showing:
Inspection dates
Results
Deficiencies
Corrective work
Engineering reports
Photographs
Permit status
Upcoming milestones
The homeowner may benefit from attending:
Major structural reviews
Pre-drywall walkthroughs
Mechanical-system reviews
Occupancy walkthroughs
Pre-delivery inspections
A pre-drywall walkthrough is particularly useful because the homeowner can see:
Framing
Plumbing
Ductwork
Electrical wiring
Insulation preparation
Blocking
Future fixture locations
Smart-home wiring
Photograph locations before concealment
What Documents Should Be Kept After Construction?
The homeowner should receive an organized closeout package containing applicable documents such as:
Approved permit drawings
Permit revisions
Building-inspection records
ESA certificate or notification documents
Structural field-review reports
Mechanical reports
Survey documents
Foundation survey
Grading certificate
Equipment manuals
Equipment warranties
Material warranties
Window and door information
Roofing warranty
Waterproofing warranty
HVAC commissioning records
Air-balancing report
Tarion documents
PDI form
Final permit status
Occupancy documentation
These documents can be important for:
Warranty claims
Future renovations
Property sales
Insurance
Refinancing
Maintenance
Future permit applications
Custom-Home Inspection Checklist
Before Foundation
Building permit posted
Approved drawings available
Excavation reviewed
Soil bearing accepted
Footings inspected
Reinforcement reviewed
Concrete pour authorized
Before Backfilling
Foundation inspected
Waterproofing complete
Drainage tile complete
Window wells installed
Foundation insulation installed
Engineer’s review complete
Survey completed where required
Before Basement Slab
Underground plumbing inspected
Underground electrical inspected
Radon rough-in installed where specified
Drainage stone complete
Slab insulation complete
Vapour barrier complete
Reinforcement complete
In-floor heating tested where applicable
Before Insulation
Structural framing inspected
Structural engineering reports complete
Plumbing rough-in inspected
HVAC rough-in inspected
ESA rough-in completed
Fire stopping complete
Exterior envelope made weather-tight
Before Drywall
Insulation inspected
Vapour barrier inspected
Air sealing complete
Electrical wiring accepted
Pre-drywall photographs taken
Homeowner walkthrough completed
Blocking confirmed
Before Occupancy
Plumbing operational
Heating operational
Electrical service operational
ESA final completed or appropriately advanced
Guards and handrails installed
Stairs safe
Smoke and carbon-monoxide alarms operational
Required fire separations complete
Required exits complete
Occupancy inspection scheduled
Engineering reports submitted
Before Permit Closure
Exterior work complete
Final grading complete
Final building inspection complete
Outstanding deficiencies corrected
Final engineering reports submitted
Permit status confirmed closed
Planning a Custom Home in Toronto?
416 Construction Design Build manages custom-home inspections as part of a coordinated design-build process.
Our services can include:
Property feasibility review
Architectural design
Structural engineering
Mechanical and HVAC design
Energy-efficiency documentation
Zoning and Committee of Adjustment applications
Building permits
Demolition permits
Utility coordination
Excavation and shoring
Foundation construction
Complete custom-home construction
Trade coordination
Inspection scheduling
Engineering field-review coordination
ESA coordination
Occupancy preparation
Deficiency management
Project closeout
Our team coordinates each inspection with the site supervisor, trades, consultants and authorities so work is inspected at the correct stage before it is concealed.
Contact 416 Construction Design Build to plan and build a custom home in Toronto, North York, Etobicoke, Scarborough, Mississauga, Oakville or elsewhere in the GTA.
416 Construction Design Build
Phone: 647-624-8110
Email: construction416@yahoo.com
Frequently Asked Questions About Toronto Custom-Home Inspections
How many inspections does a custom home require in Toronto?
A typical custom home may require approximately 15 to 25 municipal, ESA and professional reviews. The exact number depends on the house design, permit scope, structural systems, mechanical systems and site conditions.
Does Toronto inspect every stage of a custom-home build?
Toronto Building inspects the prescribed stages associated with the issued permit. Other work may be reviewed by ESA, engineers, surveyors or other authorities.
Who books the City building inspections?
The permit holder is responsible, although the general contractor or site supervisor usually manages inspection scheduling.
Can construction continue before an inspection passes?
Only when the applicable inspector confirms that the project can proceed. Inspection-dependent work should not be covered, poured or backfilled beforehand.
Does the City inspect electrical work?
Electrical inspections are generally conducted through the Electrical Safety Authority rather than Toronto Building.
Is an engineer’s inspection the same as a City inspection?
No. Engineering field reviews and City building inspections have different responsibilities. A project may require both.
When does the framing inspection occur?
The framing inspection normally occurs after structural framing and the applicable plumbing and HVAC rough-ins are substantially complete but before insulation and drywall conceal the work.
When is the electrical rough-in inspected?
ESA’s rough-in inspection occurs after branch-circuit wiring and outlet boxes are installed but before insulation, vapour barrier or drywall covers the wiring.
Can drywall be installed before the insulation inspection?
No. Insulation and vapour barrier should remain exposed until the required inspection is completed and approval to proceed is received.
Can a homeowner move in before the final inspection?
Occupancy may be permitted before every minor item is complete, but the required occupancy approval must first be obtained. The permit may remain open until final completion.
Does occupancy approval close the building permit?
Not necessarily. A separate final inspection and completion of outstanding work may still be required.
What happens if an inspection is missed?
The inspector may require work to be uncovered, tested, reviewed by an engineer or reconstructed. Missing inspections can cause significant delays and costs.
Is a Tarion PDI the same as a building inspection?
No. A Tarion PDI documents the condition and completeness of an applicable enrolled home before possession. It does not replace municipal, ESA or engineering inspections.
Should I hire an independent inspector for a new custom home?
It can be beneficial, particularly before drywall, before occupancy or before warranty deadlines. A private inspection supplements but does not replace mandatory inspections.
How do I know whether the final permit is closed?
The permit status should be confirmed through Toronto’s permit and inspection records or with Toronto Building. The builder should provide final closeout documentation.
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