Mechanical Permit Guide

Mechanical permits cover HVAC equipment, ductwork, ventilation, combustion air, exhaust, and some appliance installations.

Common triggers

• Furnaces, heat pumps, condensers, duct changes, bath fans, range hoods, and gas appliances may need review
• Energy documentation and equipment sizing can matter
• Final inspection checks installation, clearances, drainage, and venting

Before applying

• Confirm whether zoning or public works approval comes first
• Ask whether trade permits must be separate
• Keep final approval records with your home documents

Helpful next steps

• Check the project guide for your scope
• Search local guides for your city or county
• Verify current requirements with the authority having jurisdiction

This page is general planning guidance, not legal, engineering, architectural, or code-compliance advice.