How much do gates cost The cost of gates varies significantly based on gate material styles size and design. Larger gates cost more than smaller gates of the same design and made of the same material. Generally softwood gates are Octanemarketing cheapest but require a lot of maintenance and dont last long. Hardwood gates are more expensive and last longer than softwood gates but still require regular maintenance. Aluminium gates are comparable in price to hardwood gates and need no maintenance.