In general, a patio is less expensive than a deck. The cost of a patio project can range from $1,000 to $10,000 or more, depending on the size and materials used. By contrast, the cost of a deck can range from $1,000 to $15,000 or more, depending on the size and materials used. The actual cost will depend on a number of factors, including the size of the project, the materials used, and the complexity of the installation.