"Nothing gets done around here without Builders! You can hire more Builders to start multiple construction projects, or speed up their work by using green gems."
Each Builder's Hut comes with one Builder which allows you to build and upgrade the structures of your Home Village. You obtain two Builder's Huts from completing the tutorial, with another three available for purchase by using Gems.
It won't be long until your Builders are spending 1-2 days or more on upgrades, so additional workers will come in very handy!
A player has two Builder's Huts by default
Your first Builder's Hut is already constructed when you begin playing the game for the first time.
The second Builder's Hut costs 250 Gems and is required to be built during the tutorial. It will use half of your initial allotment of 500 Gems.
It is possible to save up enough Gems to build all five Builder's Huts eventually, as there are a total of 8,687 Gems available via Achievements which means collecting all the Achievements will give you enough Gems. Also, there is an unlimited amount obtainable by clearing Obstacles such as plants and rocks (plants regrow every 8 hours). Gem Boxes appear every 1-2 weeks, and always yield 25 Gems when cleared.
Disregarding Achievements, as long you don't waste Gems on anything else, it would take 542 days to acquire enough Gems by clearing Obstacles to buy the three remaining Builder Huts. This figure declines to about 388 days if the Gem Box interval is estimated at 1.5 weeks (10.5 days).
The first Builder's Hut is free and given to players.
The second Builder's Hut is bought during the Tutorial for 250 Gems.
The third Builder's Hut costs 500 Gems. There are many ways to get it.
Remove obstacles (especially Gem Boxes) until you reach 500 Gems from your remaining 250 Gems from the tutorial and collect small Achievements.
The Sweet Victory achievement is easy to get; by reaching 1250 Trophies, you get 465 Gems (5 at 75 Trophies, 10 at 750 Trophies, and 450 at 1250 Trophies), which is only 25 Gems from getting the third Builder. With other achievements, this is enough to get the third Builder.
You can also get it in the Builder Pack for USD $4.99 that includes the Builder and 500 Gems.
The League All-Star achievement gives 2500 Gems upon reaching the Champion league.
You can get this through the Builder Pack for USD 19.99 and includes the Builder as well as 2000 Gems.
You can put your Builder's Huts in the very corners of your village, in hopes of wasting opponents' time getting to them when attacking - which might mean the difference between a 2-star defeat instead of a 3-star one. However, the drawback of doing so is they will be easy pickings for a single Archer or Barbarian, and each building (regardless of purchase price or hit points) counts the same amount toward 50% destruction.
Builder's Huts can be used like Walls or other buildings to push back the no-spawn zone of Troops.
They can also be used to lead enemy troops a more desirable direction (for the defender). Because units with no preferred target simply attack the next closest building once they have destroyed their current target, you can strategically place Builder's Huts to ensure that these troops find a string of closer buildings leading away from high-value targets such as Mortars and Air Defenses.
Attackers should look for Builder's Huts or other buildings in corners and may combat this by placing one or two Barbarians or Archers at each building at the start of a battle.
Builder's Huts can be built without a free Builder.
The total cost of all five Builder's Huts is 3,750 Gems. Note that the second Builder's Hut is bought during the tutorial, so if you have already finished it, you would need an additional 3,500 Gems to buy the remaining three Huts.
A new player has 250 gems remaining after the tutorial, assuming he did not use any extra gems, making the cost of getting the next 3 builders 3250.
They do not appear to have a door, or any form of resting comforts such as a bed, but there will be signs of sleeping from a Builder's Hut if one of your Builders is idle and find your builder lying on the ground of you drag an idle hut.
As soon as the three-minute raid timer begins counting down, all Builders will run towards the Town Hall even if it is the first building to be attacked. Even if the Town Hall is destroyed before the Builders reach it, they will still "enter" it, disappearing upon doing so.
On top of the hut, there is a hammer and saw which represents the Builders.
The hammer on top of the hut is not reflective of the hammer used by the Builder, and remains there even when the builder is working.
When moving a Builder's Hut whose Builder is currently unoccupied, there is a small black dot on the ground where the Builder's Hut originally was standing. As soon as you place the Hut in a new position, the Builder will spawn on the dot and run towards the Hut.
Although classified as a Resource Building, Goblins do not preferentially target the Builder's Hut, nor do they cause double damage when attacking it.
It has the lowest hitpoints of any building in the game, although it is tied with the Heroes Altar and the Army Camp at level 1.
There is an achievement for destroying a certain amount of Builder´s Huts, and it is called Union Buster.
Builder's Huts are unable to be upgraded.
When moving an occupied hut with an idle Builder, the Builder can be seen resting on the ground where the hut originally was, and once the hut is placed he will get up and run into his hut in the new location. The image of this can be seen above to the right.
The Builder may sleep outside/on top of his hut, see trivia on on the Builder page.
If the time to destroy an obstacle is less than the time it takes the assigned Builder to reach it, the obstacle will be simply vanish when the removal timer ends and the previously-assigned Builder will, from wherever he is, immediately head toward his hut to sleep.
There is a glitch where if you pick up the Builder's Hut place it onto the red and then go into Village Edit Mode and edit your current base and then hit cancel your builder will be on the ground not in the Builder's Hut but next to it.
There have been many rumours about an 'upgradeable' Builders Hut, but Supercell have ruled that out.