Source-backed workflow

How do I know whether my project needs a permit?

Start with the legal jurisdiction and the complete scope—not the contractor's guess or your mailing city.

Local decision requiredReviewed August 4, 2026
PLAIN ANSWERStart with the legal jurisdiction and the complete scope—not the contractor's guess or your mailing city.Local rules vary. The linked official examples support the workflow, not a nationwide yes/no answer.

A safe way to handle it

1
Match the property to its incorporated city and county.
2
Write down structural, electrical, plumbing, mechanical, gas and exterior changes.
3
Find a project-specific rule or ask the issuing authority in writing.

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