Do I need a permit to replace windows in Los Angeles?
Like-for-like window replacements in the same opening typically don’t require a permit in LA. Creating a new opening or changing the size of an existing one does require a permit. GN Builders determines what’s needed and handles the process.

How long does window replacement take?
Most window replacement projects take 1–3 days depending on the number of windows. A full home of 15–20 windows is typically completed in 2–4 days.

My windows have condensation between the panes — can they be repaired?
Condensation between panes means the sealed unit has failed and argon gas has escaped. The glass unit can be replaced without replacing the entire frame in some cases — we’ll assess your specific windows and give you the most cost-effective option.

What’s better — fiberglass or vinyl windows?
Both are excellent for Southern California. Vinyl is more affordable and widely available. Fiberglass is stronger, more dimensionally stable in extreme temperatures, and can be painted. We’ll recommend based on your budget and performance priorities.

Can you install a door where there’s currently a window, or vice versa?
Yes, but it requires structural framing work — potentially including a new or modified header. This is exactly the kind of project our licensed contractor team handles. We assess the wall structure and provide a complete scope of work.