Brickmakers are production buildings. They will continuously produce Bricks until reaching the city's Bricks storage capacity, defined by your Storehouses.
The special bonus of the Brickmaker is Construction Speed. The higher the level of every Brickmaker the higher the Brick production and the Construction Speed bonus.
Building and upgrading are tasks that take time. There are several ways of decreasing that time: increasing your Construction Speed bonus, asking your Alliance for help, using your Free Finish power or with Speed Up items. Construction Speed is one of the most profitable boosts for your city, reducing any construction time. The reduced construction time is the one shown in the Build or Upgrade buttons.
* Total Power amount provided on each level
Build as many Brickmakers as possible up to their maximum level and obtain an outstanding Construction Speed bonus to max out your city as soon as possible.
You can also Research Construction Speed in the Wealth Temple to add to your current boost.