Hobbies and Crafts How long does it take Bestbuy to install a radio? How long does it take Bestbuy to install a radio? So most of the work that is performed by Best Buy on a regular basis can be completed in the time frames within their day. A deck/radio install would usually take between 30 minutes to an hour for the most common estimate.Aug 22, 2016 Related Posts:The best time to paint or stain a deck in the winter is when it is cold.What happens if it rains on a freshly stained deck?How to use a belt sander on a deck.How To Use the Svengali Deck