Schedule Mechanical Inspection
Critical checkpoint before drywall. Get your electrical, plumbing, and HVAC rough-in inspected and approved to ensure code compliance and safety.
Why Mechanical Inspection Is Critical
The rough-in inspection is your last chance to verify that electrical, plumbing, and HVAC systems are installed correctly before they're hidden behind drywall. Skipping this inspection or failing to address violations can result in serious safety hazards, code violations that affect home resale, insurance issues, and costly demolition if problems are discovered later. Most jurisdictions won't issue a certificate of occupancy without proper inspections. This checkpoint protects your investment and ensures your family's safety for decades to come.
What You'll Need
Step-by-Step Guide
Verify All Rough-In Work Is Complete
Before scheduling, confirm everything is ready for inspection:
- ✓ All wiring installed and stapled properly
- ✓ Boxes mounted at correct heights
- ✓ GFCI/AFCI circuits labeled
- ✓ No open junction boxes
- ✓ All drain and supply lines installed
- ✓ Proper slope on drain lines
- ✓ Venting complete and tested
- ✓ Water test passed (no leaks)
- ✓ Ductwork sealed and supported
- ✓ Insulation installed to code R-value
- ✓ Vapor barriers (if required)
- ✓ Fire blocking in place
Schedule the Inspection
Contact your local building department:
- •Call or schedule online 2-5 business days in advance
- •Provide permit number, address, and type of inspection needed
- •Request "rough-in inspection" or "mechanical inspection"
- •Get confirmation of date/time (often AM or PM window)
- •Ask if you need to request separate electrical, plumbing, and HVAC inspections
- •Confirm inspector's contact info for day-of questions
Tip: Some jurisdictions combine all systems into one "rough-in" inspection, others require separate inspections. Ask when scheduling.
Prepare for Inspection Day
Set up for a smooth inspection:
- •Clean work area - remove debris, scrap materials, and tools
- •Ensure all work is visible and accessible (no covered areas)
- •Post permit in visible location (window or doorway)
- •Have approved plans available for reference
- •Turn on adequate lighting throughout basement
- •Clear path for inspector to access all areas
- •Label electrical circuits at panel if required
During the Inspection
Be present and professional:
- •Be available during the scheduled window
- •Greet inspector and offer to walk them through the work
- •Answer questions honestly and directly
- •Take notes on any concerns or required corrections
- •Ask for clarification if you don't understand an issue
- •Take photos of any problem areas for reference
- •Get a copy of the inspection report before inspector leaves
Address Any Corrections
If inspection doesn't pass on first try:
- ✓ Get signed approval/sticker
- ✓ Keep documentation
- ✓ Proceed to drywall
- ✓ Update project timeline
- • Review correction list
- • Fix all noted issues
- • Schedule re-inspection
- • Don't cover any work yet
Common corrections: improper wire stapling, missing junction box covers, inadequate GFCI protection, plumbing slope issues, or insufficient insulation R-value.
Pro Tips
- ✓Do a self-inspection the day before using online code checklists
- ✓Take "before inspection" photos of all work - useful if issues arise later
- ✓Ask inspector for advice on best practices - they're usually helpful when asked politely
- ✓Schedule inspection earlier in their window to avoid rushed late-day inspections
Frequently Asked Questions
When should I schedule the rough-in inspection?▼
Schedule the inspection after ALL rough-in work is complete (electrical wiring, plumbing pipes, HVAC ducts, insulation) but BEFORE installing drywall. Typically scheduled 2-5 business days in advance. Never cover work before it's inspected - you may need to tear it out if it fails.
What do inspectors look for in a basement rough-in?▼
Inspectors verify electrical boxes are properly mounted and sized, wiring is secured and protected, GFCI/AFCI circuits are correct, plumbing has proper slope and venting, drains are tested, HVAC ducts are sealed, insulation meets code R-values, and vapor barriers are installed correctly. They also check for fire blocking and structural modifications.
What happens if I fail the inspection?▼
The inspector will provide a written list of corrections needed. Fix the issues, then schedule a re-inspection (usually free or minimal fee). Common failures: missing junction box covers, improper wire stapling, inadequate GFCI protection, plumbing slope issues, or insufficient insulation. Don't proceed until you pass.
Do I need to be present for the inspection?▼
Not always required, but highly recommended. Being present allows you to ask questions, understand any issues, and get guidance on corrections. If you hired a contractor, they should attend. Ensure the inspector can access all areas and that your permit is posted visibly.