If you're shopping for a new garage door in the Denver area, one of your first questions is probably pretty simple: How much is this going to cost? A new garage door in the Denver metro area can cost just under $3,000 for a basic non-insulated steel door without windows, around $5,000 for an insulated steel door with windows, and approximately $7,000–$8,500 for an upgraded design such as faux wood. Fully custom garage doors generally start around $12,000 and can exceed $50,00