Building inspections should occur whenever completed work is still visible and before the next operation conceals it. For a permitted house or addition, that usually means checks for site controls and setbacks, footings and foundations, underground services, trade rough-ins, framing and fire details, insulation and vapour barriers, any required rated-cover work, trade finals, and the building final. The exact list and order come from your permit inspection card, approved plans, and local building department—not from a generic internet checklist.
Use each inspection as a hold point: stop before concrete, backfill, slab placement, floor covering, insulation, drywall, or another finish hides the work. Portland, Toronto, and College Station publish overlapping stages but arrange and name them differently, so confirm the local trigger for every visit.
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Why inspections are staged around concealment
An inspector can approve only what can be seen and, where required, tested. A footing inspection therefore happens after excavation, forms, reinforcing and anchors are ready but before concrete. A sewer inspection happens while the pipe is accessible and before backfill. Rough-in and framing checks occur before insulation and interior finishes cover wiring, pipes, ducts, fasteners, bracing or fire stopping.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchPassing one stage does not approve later work. Changes to an approved plan, concealed defects, or missing trade approvals can still prevent a permit from closing. Keep the approved drawings, revision notices, inspection card and test records on site so the inspector can compare installed work with the permitted design.
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1. Before site work and excavation
Confirm the project can start
Before mobilising equipment or disturbing soil, verify that the permit is issued, the current approved plan set is available and any required pre-construction meeting has occurred. Identify which inspections are building, plumbing, electrical, mechanical, gas, fire or special inspections. Assign one person to request visits and maintain the inspection record; missed calls often occur when each subcontractor assumes another trade has booked the inspector.
Protect the site and establish location
Complete the site controls required by the authority and the plans. These can include tree protection, erosion and sediment controls, temporary services, construction access, survey or visible property markers, and setback or location checks. Portland requires tree-protection approval where applicable before other work and requires erosion-control approval before further ground-disturbing activity. Setbacks depend on the project and on reliable property or survey markers, so do not rely on a tape measure taken from a fence or hedge.
- Post the permit and keep the approved plans available for the inspector.
- Install required tree, erosion and sediment controls before excavation.
- Confirm the building footprint, elevations, setbacks and utility locations against the approved site plan.
- Ask the building department whether a separate layout, survey, demolition or service inspection is required.
2. Footings and foundations, before concrete
Prepare the footing call
Request inspection when excavation is complete, forms are secured, reinforcing steel is installed with the specified supports and required anchors or hold-downs are in place. Do not pour concrete until the authority has passed this hold point. Portland specifically calls for inspection before concrete, with hold-downs and special frame anchor bolts mounted. Toronto schedules the footing visit when formwork is complete and before the pour.
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- Footing width, depth, steps and location compared with the approved plans.
- Reinforcement size, spacing, laps, cover and support so steel does not rest on soil.
- Anchor bolts, hold-downs, embedded plates and other connection hardware.
- Excavation conditions, bearing material, groundwater or other site-specific requirements identified by the design.
- Foundation-wall forms, reinforcing and any required wall or slab preparation at the next inspection.
Depending on the design and jurisdiction, foundation work may also require separate inspections for foundation walls, slabs, grounding electrodes, waterproofing, radon measures or under-slab work. The permit card determines which calls apply. If a footing changes after inspection—for example, because unsuitable soil requires a deeper excavation—obtain the required design approval and reinspection before placing concrete.
3. Underground and underfloor services
Inspect while services are accessible
Schedule underground plumbing, electrical, mechanical, gas, water, sewer, stormwater and other permitted services before backfill, slab placement or subfloor installation. Pipes and conduits must be installed, supported and protected as shown on the plans. Portland lists underground plumbing and electrical and requires systems to be installed and secured before floor framing is covered. Toronto requires outside sewer and water services to be complete and ready for testing before backfill.
Have tests ready
Bring the required test equipment, gauges, certificates or test results to the visit. A visual approval is not a substitute for a pressure, leak, continuity or other test when the authority requires one. Coordinate trench depth, bedding, sleeves, cleanouts, access points and service entries so another trade does not cover the work before all inspections and tests are complete.
- Leave trenches, penetrations and service runs open and clean.
- Protect exposed pipe and cable from damage between inspection and backfill.
- Record the location and depth of utilities before they disappear.
- Obtain approval before placing concrete or installing a floor system over under-slab work.
4. Trade rough-ins and structural framing
Trade rough-ins
Complete required plumbing, electrical, mechanical or HVAC, and gas rough-ins before insulation or interior finishes conceal them. Install boxes, supports, ducts, vents, drains, valves, access panels and fire-sealing materials in the locations shown on the plans. Leave junctions, penetrations and equipment connections visible. A rough-in inspection may be separate for each trade or combined with another visit.
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Framing and connections
The framing inspection compares the completed structure with the approved plans. It commonly includes member size and spacing, bearing and connections, sheathing and nailing where specified, bracing, blocking, stair openings, required headers, and repairs for improper cuts or notches. Portland allows rough-in to occur alongside framing in some cases. College Station lists rough-ins before framing but permits specified trade inspections to occur in varying order. Follow the sequence assigned to your permit rather than assuming one city’s order applies elsewhere.
Keep the structure inspectable
Do not install insulation, drywall, floor covering or other finish layers until framing and rough-in approvals are recorded. If a late duct, cable or pipe requires cutting a joist, stud, beam or truss, obtain the approved repair detail and have the repair inspected. Unapproved field changes can trigger removal of finishes and a new structural review.
5. Structural, fire and life-safety details
Project-specific structural checks
Engineered or unusually configured buildings may require inspections beyond the normal framing visit. Examples include shear-wall nailing, special frame anchors, hold-downs, moment connections, engineered trusses or other elements identified in the plans. Portland lists shear-wall and firewall nailing where the plans require it. The responsible design professional or authority may also require special inspections or third-party reports for larger or engineered work.
Fire separation and life safety
Inspect firewalls, fire separations, fire stopping, rated penetrations, sprinkler systems, alarms, standpipes and similar life-safety work when each system is complete and still visible. Toronto schedules fire separations and fire stopping before interior finishes and calls for life-safety-system inspection at system completion. Keep product listings, installation records and test certificates available when the plans or code official require them.
Rated assemblies are systems, not just a layer of board. Fastener type and spacing, joints, penetrations, framing, insulation and sealants must match the approved assembly. Covering a rated wall before its required inspection can force removal of finishes so the inspector can see the complete installation.
6. Insulation and vapour barriers before finishes
After insulation and any required vapour barrier are installed and secured, request inspection before drywall or another interior finish hides them. The inspector checks the specified type, thickness or placement, continuity, air-sealing details and protection around services against the approved documents. Portland instructs that insulation and vapour barriers be in place before inspection and cautions against covering wet insulation or substantially wet construction. Toronto places insulation and vapour-barrier inspection before interior services are concealed.
Coordinate this visit with electrical, plumbing and mechanical trades. Corrections to a rough-in discovered after insulation is installed can damage the vapour barrier and require a second inspection. Keep insulation dry, maintain access to junction boxes and valves, and repair any punctures before applying finish materials.
7. Drywall and other special cover inspections
A separate cover inspection is not universal. Where the permit requires one, it applies to specifically regulated work such as a firewall, gypsum shear wall, rated assembly or lath. Portland describes inspection of firewalls and gypsum shear walls after fastening but before taping, plastering or additional layers obscure the work. Confirm whether your authority requires this visit; ordinary drywall in a standard room may not have a separate inspection.
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Complete each trade final
After equipment, fixtures and controls are installed, request final electrical, plumbing, mechanical and gas inspections as applicable. Demonstrate that required systems operate safely, that access and clearances are maintained, and that labels, disconnects, valves, vents and guards are installed. College Station requires trade finals before the building final; Portland lists separate trade finals before final building or permit inspections.
Prepare for the building final
The building final checks completion against the permit and approved plans. Typical items include address display, smoke and carbon-monoxide alarms where required, handrails and guards, stairs and egress, required finishes, decks, doors, windows and other safety details. Toronto lists separate final interior and exterior inspections and instructs owners to schedule a final to close the permit.
- Remove construction debris and provide safe access to every room, deck, crawlspace and service area.
- Install required fixtures, guards, handrails, alarms, address numbers and safety hardware.
- Resolve open correction notices and obtain every trade approval.
- Keep manufacturer instructions, test records, special-inspection reports and approved change documents available.
- Ask the authority how the final approval or permit-closure document is issued and retain it with the property records.
How municipal schedules differ
The following examples show why a local inspection card controls. They are published municipal approaches, not a universal mandate.
| Authority | Published examples of stages or checks | Notable sequencing detail |
|---|---|---|
| Portland, Oregon | Tree protection and erosion controls; footings before concrete; underground plumbing and electrical; rough-in and framing; shear-wall or firewall nailing where required; insulation and vapour barriers; special drywall cover; trade finals and final building inspection. | Rough-in may be inspected alongside framing; tree and erosion approvals can be prerequisites to ground disturbance. |
| Toronto | Footing formwork before the pour; outside sewer and water services before backfill; fire separations and fire stopping; insulation and vapour barrier; life-safety systems; final interior and exterior inspections. | Services must be ready for testing, and covered work must be uncovered if the inspector cannot see the whole element. |
| College Station | A usual residential schedule of 12 inspections, with trade rough-ins, framing, trade finals and a building final among the listed stages. | Rough-ins are generally listed before framing, but specified trade inspections may occur in a different order; trade finals precede the building final. |
Compare schedules by asking three questions: what operation will conceal the work, which inspection discipline is responsible, and what local or project condition triggers an additional visit? Also check whether rough-in and framing are combined, whether utility testing is required, and whether final interior, exterior, trade or permit-closure inspections are separate.
A practical scheduling workflow
- Read the permit card. Mark every required building, trade, fire, special and final inspection, including conditional items.
- Map concealment points. On the construction programme, flag concrete pours, backfill, slab placement, floor framing, insulation, drywall and finishes.
- Coordinate subcontractors. Confirm that all work covered by one hold point is complete before booking the inspector.
- Prepare the site. Provide safe access, lighting, ladders where permitted, clean inspection areas and visible plans.
- Book early enough to protect the sequence. Local notice periods and booking methods vary; a delayed visit must not force an unapproved cover operation.
- Keep the work open. Do not backfill, pour, insulate or finish until the inspector has passed the stage or given written direction.
- Record the result. Save approvals, correction notices, test reports, photographs and approved revisions with the permit file.
- Close every item. Arrange reinspection for corrections and obtain all trade and building finals before treating the project as complete.
What to do if work was covered too soon
Stop the next operation and contact the building department or inspector. Toronto’s guidance states that the inspector must be able to see the whole element; work covered before passing may have to be uncovered. Do not assume photographs, contractor assurances or a later final inspection will replace the missed hold point.
Follow the authority’s direction for selective opening, testing, engineering review or reinspection. Keep a written record of what was opened, what was found, how it was repaired and who approved the correction. If the concealed work differs from the plans, obtain the required revision before closing the opening again.
Using older checklists appropriately
The U.S. Department of Commerce’s Field inspectors’ check list for building construction is a 1942 historical manual organized around preliminary, foundation, structural-framing, intermediate and finishing work. It can help a reader understand physical inspection topics, but it is not current code, does not establish today’s permit sequence and cannot replace local documents. Current requirements, adopted codes and the approved project plans always govern.
When is the permit actually complete?
Physical construction can appear finished while the permit remains open. Completion requires the required trade finals, the building final and any special or life-safety approvals listed for the project. Ask the authority for the final approval or permit-closure record, correct every outstanding item, and retain that record with the plans and inspection history.
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