The cost for professional holiday light installation averages around $430, with a typical range of $220 to $675. However, prices can be as low as $100 for simple projector setups or exceed $1,200 for extensive displays. The total cost depends on factors like the display's complexity, your home's size, labor rates in your area, and the type of lights used. For example, installation on a small, one-story home may cost $250 to $600, while a multi-story home over 4,000 square feet could cost $500 to $1,800. Costs can also be broken down by location (e.g., high roofs at $3.50–$6 per linear foot) or by the type of light strand, with prices ranging from $4 for basic incandescent strands to over $60 for color-changing LED strands.

No, you should not leave LED Christmas lights up all year. While the LED lights themselves are very durable, their wiring and casings can be as vulnerable as any Christmas lights. They’re subject to drying out, experiencing cold or sun damage that causes them to crack, and even damage caused by gnawing pests. (The same is true of incandescents.) If you want your lights to last the years that they’re rated for, bring them inside after Christmas is over. 

Christmas light cords are long, thin, and flexible—which makes them exceptionally prone to tangling. As you try to untangle the very merry mess, the light bulbs and sockets may catch on the cords, making it even harder to pull cords through the knots.

One of the easiest ways to save money when hiring a holiday decorator is to provide storage for your decorations. If you have the space, you can save hundreds or even thousands of dollars by avoiding storage costs through your professional. It’s also a good idea to provide as much direction as possible for your professional, as this can cut down on design services. Finally, you can pay for your decorator to take down your decorations at the end of the season, but packaging and storing them yourself will save money on labor.