Deck Gazebos can be an interesting and functional component of a deck project. There are many sizes, shapes, and styles to choose from. The most common shape is the octagon. Building a gazebo from scratch can be a challenge for even an experienced builder. The problem arises from needing to attach many rafters into a small central hub while standing on a ladder. Building from a kit is usually a easier and less frustrating project for most builders. You simply follow the directions and snap together prebuilt panels. This can usually be accomplished in one day by 2-3 people.
Deck kits are also relatively expensive especially when you start adding features like screens, double roofs, and cupolas. Most deck kits are designed to be installed on top of a deck frame. Some kits include flooring patterns that require specific framing.
Some gazebos are built free standing in the yard while others are attached to a deck. Gazebos attached to decks are usually framed a step up from the deck to leave space for the door to swing open clear from snow or debris. You should also pay attention to any views from your house that will be blocked by the gazebo roof.