Do I need a permit for replacement windows?

Yes, a permit is required for the installation of windows whether they are new or replacement.

Windows located in conditioned (heated or cooled) space are required to meet the most recently adopted International Energy Conservation Code U-Factor requirements.

Additionally, windows may have to meet Building Code requirements for safety glazing, child safety guards, and Emergency Escape and Rescue Openings (EERO) sizes depending on their location within the structure.