A practical guide for contractors and builders to the inspections a construction project goes through: building code inspections by phase, special inspections, safety inspections, quality control checks and pre-handover walkthroughs, with how to prepare, what commonly fails and how to keep records.
Inspections protect future occupants, workers and the public, and they protect the contractor too. A failed inspection means rework, a return visit, schedule delays and sometimes idle crews. A hidden defect that was never inspected can become a warranty claim or lawsuit years later. Contractors who treat inspections as a routine part of quality control, not as a hurdle, finish projects faster and with fewer callbacks.
When a project requires a building permit, the local building department, sometimes through a third-party agency, inspects the work at defined stages before it is covered up. The exact list, names and timing depend on the jurisdiction, the type of building and the permits involved, so always check the inspection schedule attached to your permit.
| Stage | What is usually checked | Timing |
|---|---|---|
| Site and footing / foundation | Excavation depth, footing size, reinforcement placement, forms, setbacks | Before concrete is poured |
| Underground plumbing and utilities | Pipe size, slope, materials, testing, bedding | Before trenches are backfilled or slabs poured |
| Slab or under-floor | Vapor barrier, reinforcement, under-slab insulation where required | Before pouring |
| Framing | Structural members, connections, bracing, fire blocking, openings | After framing, roof and windows, before insulation |
| Rough-in electrical, plumbing and mechanical | Wiring, boxes, pipes, ducts, gas lines, pressure tests | Before walls are closed |
| Insulation and energy | Insulation type, thickness, air sealing | Before drywall |
| Drywall or fastener (some jurisdictions) | Fire-rated assemblies, fastener spacing | Before taping |
| Final | Completed work, life safety systems, accessibility, egress, grading | Before certificate of occupancy |
Larger or more complex buildings often require special inspections of particular work, such as structural steel welding and bolting, high-strength concrete, reinforced masonry, deep foundations, soils and fireproofing. These are typically performed by qualified special inspectors or testing agencies engaged by the owner, under a statement of special inspections approved by the building official. Contractors should know which items require special inspection, schedule work so the inspector can observe it and never cover work before it has been inspected and documented.
Fire alarm, sprinkler and other life safety systems are usually inspected and tested by the fire marshal or building department before occupancy, often with acceptance tests witnessed by an inspector. After occupancy, these systems need routine inspection and maintenance. Our fire alarm inspection checklist and fire sprinkler inspection checklist cover the ongoing side.
Safety inspections focus on hazards to workers rather than the finished building. Contractors run their own daily and weekly site safety inspections covering fall protection, scaffolding, ladders, excavations, electrical hazards, housekeeping and personal protective equipment. OSHA may also inspect sites, either as part of planned inspection programs or in response to complaints, referrals, serious injuries or fatalities. Being ready means having a written safety program, training records and documented inspections. Use our weekly site safety inspection, scaffolding inspection checklist and fall protection inspection checklist.
Quality control inspections are the contractor’s own checks that work matches plans, specifications and standards before an inspector or owner sees it. They include preparatory inspections before a new activity starts, initial inspections when the first work is complete and follow-up inspections during the activity. Many problems that fail code inspections, such as missing fire blocking or incorrect anchor spacing, can be caught in a ten-minute self-inspection. See our construction quality control plan and quality control inspection form.
Inspection checklist complete.
Keep a log for each project with every inspection’s date, type, inspector, result, correction items and photos. Store signed permit cards, test reports and special inspection reports with the project file. Good records help with disputes, warranty claims, insurance and future renovations, and they let you see patterns across projects, such as which trade causes most failed inspections. Our job site inspection checklist and inspection test plan template help organize this.
Inspections are often on the critical path. A delayed framing inspection can idle drywall crews for days. Build inspection requests into your schedule with realistic lead times, plan other work for crews while waiting and confirm inspection times the day before. When an inspection is moved or fails, update crew schedules immediately so workers are not sent to a site where they cannot work. See how to choose construction scheduling software.
Many failed inspections trace back to subcontractor work that the general contractor never checked. Make inspection readiness part of every subcontract: each trade inspects its own work before the GC calls for an inspection, attends inspections of its work when needed and corrects deficiencies promptly. Share the inspection schedule with subcontractors in weekly coordination meetings, and record who was responsible for each failed item. Over time, this data shows which subcontractors consistently pass and which need closer supervision.
EZTime helps crews and supervisors build inspection habits into daily work. Supervisors assign recurring tasks such as pre-inspection walk-throughs and safety checks with required photo proof, and get alerts when tasks are late. Crews see schedule changes on their phones when inspections move, clock in at the site with a GPS stamp or NFC tag and record hours by job. Digital forms can capture checklists and sign-offs in the field. See EZTime for construction.
Inspection requirements are set locally, and they vary. As one example, Philadelphia’s Department of Licenses and Inspections lists potential residential building inspections including footing, foundation wall, under slab, exterior framing, interior framing, insulation, wallboard, a prefinal walkthrough and a final inspection, and tells permit holders to check the permit document for the inspections actually required (City of Philadelphia L&I).
Notice the order: every inspection happens before the next layer of work hides the previous one. Build your schedule around that sequence and leave a buffer for re-inspections, especially before insulation and wallboard, where a failed inspection blocks several trades at once.
Typical building code inspections include foundation or footing, underground utilities, framing, rough-in electrical, plumbing and mechanical, insulation and final. Larger projects may also require special inspections, and all sites need safety inspections.
Building code inspections are performed by the local building department or an approved third-party agency. Special inspections are done by qualified inspectors engaged by the owner. Contractors perform their own quality control and safety inspections, and OSHA may inspect for worker safety.
The inspector issues a correction notice. The contractor fixes the items and requests a re-inspection. Work usually cannot be covered or proceed past that stage until it passes.
No. Work that requires inspection should remain visible until it passes. Covering it can force you to remove finishes so the inspector can see it.
Know the requirements for each stage, inspect your own work with a checklist the day before, have plans and reports on site and fix issues before the inspector arrives.
The inspector lists the corrections needed. The contractor fixes them and schedules a re-inspection, sometimes for a fee. Work that depends on the failed item usually cannot continue or be covered until it passes.
Usually the permit holder, which is often the contractor. On owner-builder permits, the owner schedules them. Check the permit and the local building department’s process.
As soon as you have hourly staff, two jobs take more time than most owners expect: recording hours accurately and building a schedule everyone can see. Under the federal Fair Labor Standards Act (FLSA), employers must keep accurate records of hours worked and pay non-exempt employees overtime for hours over 40 in a workweek, and some states add daily overtime or meal-break rules. This is general information, not legal advice.
EZTime covers all three with a time clock app, employee scheduling and payroll-ready exports, from $2 per employee per month. See pricing and start a 14-day trial.
EZTime tasks can require a photo before they are marked done, which helps document work before it is covered.