According to NC building codes, when is a building permit NOT required?
Correct Answer
D) One-story detached accessory structures under 200 square feet
NC building codes typically exempt small detached accessory structures under 200 square feet from permit requirements.
Why This Is the Correct Answer
Option D (one-story detached accessory structures under 200 square feet) is correct. NC building codes exempt small detached accessory structures — such as storage sheds — that are single-story and under 200 square feet from permit requirements, provided they meet other local zoning conditions.
Why the Other Options Are Wrong
Option A: Residential additions over 400 square feet
Residential additions over 400 square feet absolutely require a building permit in NC. Any addition that increases conditioned or livable space triggers permit and inspection requirements regardless of size threshold above the exemption.
Option B: Commercial renovations over $5,000
Commercial renovations over $5,000 require permits in NC. Commercial work has lower triggering thresholds than residential work, not higher, due to occupancy safety concerns.
Option C: New residential construction
New residential construction always requires a building permit in NC — no exceptions. This is one of the clearest non-exempt categories in any jurisdiction.
Memory Technique
Remember '200 sq ft shed rule': a small detached storage shed in the backyard doesn't need a permit. Think of it as the 'garden shed exception.' Anything attached, multi-story, or larger crosses into permit territory.
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