The overall cost of a concrete patio depends on the design and size of the patio. Prices usually start at around $6 per square foot up to $10 per square foot for a basic design without any colors or special designs.Adding colors or a pattern to the design can increase the price to $15 per square foot.he average price that homeowners pay for a concrete patio is around $2,800 to just over $4,000, but some homeowners report spending as little as $1,000 or as much as $6,500. A custom design typically costs more because those projects involve more work.