What San Jose requires
Does a furnace replacement in San Jose need a permit?
Yes, plan on a mechanical permit. San Jose files furnace replacements online at SJPermits.org, and most of those permits need no plans.
- Furnace replacement, new furnaces, air conditioning appliances and heat pumps all sit on San Jose's list of mechanical permits you apply for online at SJPermits.org.
- The city says most of those online permits need no plans; only rooftop solar does.
- Questions go to the city's Permit Center on East Santa Clara Street.
- As of January 1, 2026, the 2025 Building Codes are in effect in San Jose.
Checked November 2026City of San Jose, SJPermits.org Available Online Permits
Checked November 2026City of San Jose, SJPermits.org
Checked November 2026California Energy Commission, 2025 Building Energy Efficiency Standards
Checked on San Jose's own pages, November 2026.
