Deck Building business. Allow homeowners to spend more time outdoors by building decks for them. Business Overview One of the fastest growing segments of the home improvement industry is designing, building, and installing custom sundecks. Many of the sundecks that are now being installed retail for as much as $15,000 and include features such as built-in planters, areas for sunk-in hot tubs, glass or cast iron handrails, and custom manufactured wood furniture to match the...