Builder Hall 7 introduces exciting new buildings and a powerful Giant Cannon which makes it an enjoyable BH level for players. But it is important to follow the right upgrade guide to avoid lengthy maxing-out times.
By following the correct upgrade order, you can effectively compete against other BH7 players and efficiently upgrade your Base. This will allow you to strike a balance between strategic battles and quick progress.
New Buildings
To begin your Builder Hall 7 upgrades, use your first builder to build and upgrade the new buildings. These fresh additions add a lot more damage per second value to your base compared to the upgrades of older buildings.
Thus, at this stage, obtaining the new buildings should be your first priority. By prioritizing their construction, you will strengthen your base and improve its overall defense.
Here is the list of new buildings you receive at BH7:
- x1 Giant Cannon
- x20 Walls
- x1 Army Camp
- x1 Hidden Tesla
- x1 Cannon
- x1 Firecrackers
- x1 Spring Trap
- x1 Push Trap
It is recommended to start by building the Army Camp followed by the Giant Cannon, and so forth. For the time being, it is best to keep the Giant Cannon at level 1, as we will address its upgrades later on.
Star Laboratory
The upgrade of the Star Laboratory holds significant importance at each Town Hall level. In the case of Builder Hall 7 bases, the strength of your troops plays a major role in achieving better performance.
To use more powerful troops, it is essential to prioritize the upgrade of the Star Laboratory to the next level.
This upgrade should be regarded as a high priority, as it directly impacts the effectiveness of your army and enables you to tackle the challenges that lie ahead.
Star Laboratory to level 7 upgrade cost: 2,000,000 Builder Elixirs
Star Laboratory to level 7 upgrade time: 4 days
Builder Barracks
Upon upgrading your Builder Barracks to level 9 at BH7, you unlock the Drop Ship, a valuable addition to your profile.
This new troop introduces a range of attack strategies that significantly enhance your ability to tackle other Builder Hall 7 bases with greater effectiveness.
The Drop Ship is an air troop that deals a good amount of damage while also deploying Skeletons, further improving its combat potential.
Builder Barracks to level 9 upgrade cost: 1,000,000 Builder Elixirs
Builder Barracks to level 9 upgrade time: 2 days
Clock Tower
At Builder Hall 7, the Clock Tower receives an upgrade taking it to level 6. This upgrade extends its boost duration to 26 minutes, which proves to be quite advantageous.
The Clock Tower’s boost can reduce the upgrade time of your buildings within that 26-minute timeframe.
Therefore, it is highly recommended to prioritize the early upgrade of the Clock Tower at BH7. By doing so, you can leverage its time-saving capabilities and speed up the overall progression of your base.
Clock Tower to level 7 upgrade cost: 1,700,000 Builder Gold
Clock Tower to level 7 upgrade time: 2 days
Healing Hut
At BH7, the Healing Hut undergoes an upgrade, raising it to level 3. This upgrade boosts its ability to recover the health of surviving troops to a notable 12 percent.
This increase proves to be highly beneficial when engaging other Builder Hall 7 bases, as your troops will receive an increased health recovery during the second phase of your attack.
By prioritizing the upgrade of the Healing Hut, you can increase the durability of your troops. This ultimately contributes to a more effective and successful attack on enemy bases.
Healing Hut to level 3 upgrade cost: 2,500,000 Builder Elixir
Healing Hut to level 3 upgrade time: 3 days
Elixir Storage
Before starting the upgrades of the Battle Machine, it is necessary to expand your Elixir Storage capacity. Ensure that you prioritize upgrading both of your Elixir Storage buildings.
By doing so, you can store a larger amount of Builder Elixir without encountering any storage limitations.
This approach eliminates concerns regarding insufficient storage space, enabling you to focus on upgrading the Battle Machine seamlessly and without interruptions.
Elixir Storage to level 7 upgrade cost: 1,500,000 Builder Gold
Elixir Storage to level 7 upgrade time: 2 days
Battle Machine
At Builder Hall 7, the Battle Machine receives a significant improvement with the addition of 10 new levels. These upgrades require a considerable amount of time, making them the lengthiest upgrades at BH7.
Even if you maintain a dedicated builder working solely on the Battle Machine upgrades and continuously upgrading it back-to-back, it will still take approximately 36 days to reach level 20 with the Battle Machine.
Although the waiting period may seem lengthy, the outcome is well worth it.
To speed up the process and achieve level 20 with the Battle Machine in the shortest time possible, it is recommended to assign a specific builder exclusively to the Battle Machine upgrades.
These focused upgrades ensure that progress on the Battle Machine remains uninterrupted, allowing you to reach the desired level with optimal efficiency.
| Level | Upgrade Cost (Builder Elixir) | Upgrade Time |
| 11 | 2,100,000 | 2 days, 12 hours |
| 12 | 2,200,000 | 3 days |
| 13 | 2,300,000 | 3 days |
| 14 | 2,400,000 | 3 days, 12 hours |
| 15 | 2,500,000 | 3 days, 12 hours |
| 16 | 2,600,000 | 4 days |
| 17 | 2,700,000 | 4 days |
| 18 | 2,800,000 | 4 days |
| 19 | 2,900,000 | 4 days |
| 20 | 3,000,000 | 4 days |
Giant Cannon
As mentioned earlier in the guide, you should have already built the Giant Cannon at this point, although it would still be at level 1.
To fully harness its potential, it is important to upgrade the Giant Cannon to level 7. These upgrades can be time-consuming, so patience is the key here.
The Giant Cannon has exceptional damage per second. Its unique ability to target multiple troops with a single shot further elevates its effectiveness.
Considering these advantages, upgrading the Giant Cannon becomes a high priority on our upgrade list. By investing time and resources into its upgrades, you will improve your base’s overall defense.
Keep your focus, exercise patience, and reap the rewards of a powerful Giant Cannon.
| Level | Upgrade Cost (Builder Gold) | Upgrade Time |
| 2 | 2,100,000 | 2 days |
| 3 | 2,200,000 | 3 days |
| 4 | 2,300,000 | 4 days |
| 5 | 2,400,000 | 5 days |
| 6 | 2,500,000 | 6 days |
| 7 | 2,700,000 | 8 days |
Roaster
The Roaster is an exceptionally potent defense building that warrants a high upgrade priority. Its ability to deal splash damage on both air and ground targets positions it as one of the most powerful defense buildings in the Builder Base.
At BH7, the Roaster can be upgraded to level 7, further increasing its damage per second and hitpoints.
The Roaster’s ability to unleash devastating splash damage on a wide range of targets ensures that your base remains well-protected against both aerial and ground-based attack strategies.
Roaster to level 7 upgrade cost: 2,600,000 Builder Gold
Roaster to level 7 upgrade time: 8 days
Air Bombs
Due to the addition of a Drop Ship at Builder Hall 7, Air Bombs become even more important. This defense building plays an important role in repelling air-based attack strategies.
Therefore, it is imperative to prioritize the upgrade of Air Bombs over other defense buildings.
Air Bombs to level 7 upgrade cost: 2,400,000 Builder Gold
Air Bombs to level 7 upgrade time: 7 days
Archer Tower
The Archer Tower holds a significant advantage over certain other defense buildings due to its long-range and ability to damage both air and ground units.
Consequently, prioritizing the upgrade of your Archer Tower at BH7 is highly recommended as it will buff the defense of your base.
Archer Tower to level 7 upgrade cost: 2,000,000 Builder Gold
Archer Tower to level 7 upgrade time: 4 days
Crusher
The Crusher has the ability to unleash devastating area splash damage to nearby troops within a radius of 2.3 tiles. This powerful defensive capability establishes it as an important defense building and necessitates its prioritization as a high-priority task.
By ensuring Crusher’s upgrade is given proper attention, you increase the defensive strength of your Builder Hall 7 base, enabling it to withstand and repel enemy attacks more effectively.
Crusher to level 7 upgrade cost: 2,400,000 Builder Gold
Crusher to level 7 upgrade time: 6 days
Gold Storage
To proceed with the next upgrade of OTTO’s Outpost, it is necessary to expand your Gold Storage capacity. By dedicating both builders to this task, you can speed up the process of increasing your Gold Storage capacity.
This, in turn, enables you to store the necessary Builder Gold for the upcoming upgrade of OTTO’s Outpost. If you don’t want to upgrade both of the Gold Storage buildings right now, it is fine to just upgrade one.
Gold Storage to level 7 upgrade cost: 1,500,000 Builder Elixirs
Gold Storage to level 7 upgrade time: 2 days
OTTO’s Outpost
OTTO’s Outpost serves as the heart of the second phase of the Builder Base. Upgrading OTTO’s Outpost at BH7 brings notable improvements, particularly in the count and statistics of the Zappies it spawns upon destruction.
By upgrading OTTO’s Outpost, the number of Zappies spawned will increase from 3 to 4. This increased count buffs your defensive potential, providing an additional line of defense against the enemy’s attacks.
Furthermore, the damage per second and hitpoints of the Zappies themselves will also see a significant increase, making them more powerful in combat.
OTTO’s Outpost to level 7 upgrade cost: 3,000,000 Builder Gold
OTTO’s Outpost to level 7 upgrade time: 7 days
Double Cannon
The Double Cannon plays a major role in countering ground-based attack strategies, which are commonly deployed in the builder base. Given the popularity of such attacks, upgrading your Double Cannon becomes crucial in amplifying your base’s defenses.
Double Cannon to level 7 upgrade cost: 2,200,000 Builder Gold
Double Cannon to level 7 upgrade time: 4 days
Multi Mortar
The Multi Mortar works as an effective defense building specifically designed to counter ground-based units with relatively low health. It proves particularly useful in neutralizing threats such as Cannon Carts, Raged Barbarians, and Sneaky Archers.
Multi Mortar to level 7 upgrade cost: 2,500,000 Builder Gold
Multi Mortar to level 7 upgrade time: 7 days
Firecrackers
Firecrackers are highly effective defense buildings capable of repelling air targets with great efficiency. They prove particularly effective against threats such as Beta Minions, Baby Dragons, and Drop Ships.
By prioritizing the upgrade of Firecrackers, you improve their statistics and ensure that your skies remain clear of aerial threats. Firecrackers’ explosive attacks deal a fine amount of damage which makes them a nightmare for air troops.
Firecrackers to level 7 upgrade cost: 2,000,000 Builder Gold
Firecrackers to level 7 upgrade time: 4 days
Guard Post
Upgrading the Guard Post results in an increase in the level of troops it houses. The troops stationed within the Guard Post play an important role in slowing down and distracting enemy troops.
This distraction gives your defenses valuable time to eliminate the incoming threat.
Guard Post to level 7 upgrade cost: 2,300,000 Builder Gold
Guard Post to level 7 upgrade time: 6 days
Hidden Tesla
The Hidden Tesla has the ability to inflict damage on both air and ground units. Its rapid attack rate further solidifies its position as a powerful defense building.
By prioritizing the upgrade of the Hidden Tesla, you can improve the defensive potential of your base. With the Hidden Tesla’s dual-target nature, it becomes a reliable deterrent against both aerial and ground-based attacks.
Hidden Tesla to level 7 upgrade cost: 2,100,000 Builder Gold
Hidden Tesla to level 7 upgrade time: 4 days
Cannon
Due to its inability to target air units, the Cannon finds itself at the lower end of our defense upgrade priorities. It is recommended to prioritize the upgrades of other defense buildings before considering the upgrade of Cannons.
By reserving Cannon upgrades for the later stages of your upgrade process, you ensure that your base’s defenses are optimized to counter a wider range of threats.
Cannon to level 7 upgrade cost: 1,800,000 Builder Gold
Cannon to level 7 upgrade time: 4 days
Resource Collectors and Mines
Resource collectors and mines have a relatively lower output of resources, making them more suitable for later stages of upgrades at Builder Hall 7. It is recommended to prioritize other upgrades before considering upgrades to these buildings.
Traps and Walls
By focusing on trap upgrades, you can strengthen the defense of your base and make it more challenging for enemies to breach your defenses. The upgraded traps act as hidden surprises, inflicting damage on unsuspecting enemy troops.
Meanwhile, upgrading your walls provides an additional layer of protection by impeding the progress of attackers.
Strive to maintain a balance between these two upgrades by focusing on traps as the main priority and dedicating additional resources to wall upgrades. This method will get you ready for Builder Hall 8 quickly.
