In this guide
After the foundation and framing inspections, one signature remains on the card: the final. Pass it, and you receive a certificate of completion — official permission to use your garage. It’s a great day.
What the inspector usually looks at
Every jurisdiction is a little different, but a final inspection for a detached garage often covers:
- The building matches the approved plans and site plan (size, location, setbacks).
- Roofing, flashing and siding are complete, and exterior walls are weather-tight.
- Doors are installed and working; required hardware is in place.
- Grading slopes away from the building.
- Any electrical work has passed its own inspections.
- Safety items: guards, handrails or fire separation if they apply.
- House numbers or addressing, if your county requires it.
Pre-inspection checklist
- All earlier inspections signed on the card
- Permit card and approved plans on site (my mailbox trick works here too)
- Construction debris cleaned up
- Final grading done, soil sloping away
- Doors operate; exterior complete
- Anything the plans required but you changed has been discussed with the building department
Changes happen — say so
If you changed something from the approved plans, call the building department before the final. Many changes are easy to approve with a quick revision; surprises at the final are not.
After you pass
Keep your certificate of completion and permit records with your house documents. You’ll want them when you sell, refinance or insure the property. Take photos of the finished garage — and of the framing and foundation, if you haven’t already — for future reference.
Looking back
I started researching in the spring of 2006 and finished in the fall of 2009. Seeing the last signature on that faded, re-inked inspection card made every rock I broke worth it. If you’re reading this at the planning stage: it’s a long road, but you can absolutely do it.
Key Takeaways
- The final inspection confirms the garage matches the plans and is complete and safe.
- Talk to the building department about any changes before the final.
- Keep your permit and certificate with your property records.
Frequently asked questions
What happens if I fail the final inspection?
You’ll get a list of corrections. Fix them and call for a re-inspection; some departments charge a re-inspection fee. It’s common, and inspectors are usually glad to explain exactly what they need.
Can I use the garage before the final inspection?
Officially, a building shouldn’t be occupied or used until the final is approved. Storing things in it early can also complicate the inspection. Ask your building department.
How long does a building permit last?
It varies, but permits commonly expire if work doesn’t start within about six months or stops for a long time. Many departments grant extensions if you ask before the permit lapses.
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