Permit requirements for window replacement vary by city, window dimensions, installation method, safety-glazing requirements, and HOA rules. There is no single statewide answer that applies to every project.
In general, like-for-like window replacements may not always require a permit, while changes to size, safety glazing near doors or baths, or full-frame replacements more often do. Always confirm with your city's Building & Safety department and your licensed installer before work begins.
We provide general permit contact information on each city page, but you should verify details directly through the official city website for your specific project.