Builder Hall 4 (BH4 max) in Clash of Clans is an early but crucial stage in the Builder Base progression. At this level, players unlock significant new defenses like the Guard Post and Air Bombs, and get to build an additional Army Camp, allowing for more versatile troop compositions.
Maxing out BH4 means upgrading all your available defenses, troops, and the Battle Machine to their highest possible levels for this Builder Hall.
BH4 Max Details
Discover the highest upgrade levels for every BH4 defense and troop, setting a solid foundation for your village’s growth.
🏗️ Buildings
| Building | Max Level | Levels Gained |
|---|---|---|
| Builder Hall | 4 | +1 |
| Star Laboratory | 4 | +1 |
| Builder Barracks | 6 | +1 |
| Army Camp | 1 | New at BH4 |
| Gold Storage | 4 | +1 |
| Elixir Storage | 4 | +1 |
| Gold Mine | 4 | +1 |
| Elixir Collector | 4 | +1 |
| Clock Tower | 4 | +1 |
| Gem Mine | 4 | +1 |
🛡️ Defensive Buildings
| Defense | Max Level | Levels Gained | Quantity |
|---|---|---|---|
| Cannon | 4 | +1 | 2 |
| Archer Tower | 4 | +1 | 2 |
| Double Cannon | 4 | +1 | 1 |
| Hidden Tesla | 4 | +1 | 1 |
| Firecrackers | 4 | +1 | 1 |
| Crusher | 4 | +1 | 1 |
| Guard Post | 4 | New at BH4 | 1 |
| Air Bombs | 4 | New at BH4 | 1 |
| Walls | 4 | +1 | 75 |
⚔️ Troops
| Troop | Max Level | Levels Gained |
|---|---|---|
| Raged Barbarian | 8 | +2 |
| Sneaky Archer | 8 | +2 |
| Boxer Giant | 8 | +2 |
| Beta Minion | 8 | +2 |
| Bomber | 8 | +2 |
| Baby Dragon | 8 | +2 |
🧨 Traps
| Trap | Max Level | Levels Gained | Quantity |
|---|---|---|---|
| Push Trap | 4 | +1 | 3 |
| Spring Trap | 2 | +1 | 2 |
| Mine | 4 | +1 | 3 |
| Mega Mine | 4 | New at BH4 | 1 |
At Builder Hall 4, you unlock the Guard Post and Air Bombs, enhancing your base’s defensive capabilities. All troops can be upgraded to level 8, improving their effectiveness in battles. Most buildings and defenses can be upgraded to level 4, providing a balanced and robust base setup.
Summary for BH4 Max
The BH4 max design builds upon the initial Builder Base aesthetic, with more defensive structures starting to take shape. At this stage, you’re focused on establishing a strong foundation for future progression, particularly in preparing for the Battle Machine and unlocking more powerful troops.
Key Defensive Structures & Levels:
- Guard Post: New at BH4, this defense houses a few defending troops (Raged Barbarians) that engage attacking forces. Maxes around level 4.
- Air Bombs: New at BH4, these traps deal splash damage to air units and max around level 4.
- Multi Mortar: Maxes around level 4.
- Crusher: Maxes around level 4.
- Hidden Teslas: Maxes around level 4.
- Double Cannons: Maxes around level 4.
- Archer Towers: Maxes around level 4.
- Cannons: Maxes around level 5.
- Walls: Reach level 4. All available wall segments need to be upgraded.
- Push Traps: Maxes around level 4.
- Mega Mine: New at BH4, maxes around level 4.
Heroes & Their Max Levels at BH4:
- Battle Machine: While unlocked at BH5, upgrading to BH4 is a prerequisite for reaching BH5 where you can build your first hero. At BH4, you won’t have the Battle Machine yet.
Troops & Their Max Levels at BH4: Troop levels are still relatively low at BH4, but you gain an extra Army Camp. Max levels for troops at BH4 typically include:
- Raged Barbarian: Maxes around level 8.
- Sneaky Archer: Maxes around level 8.
- Boxer Giant: Maxes around level 8.
- Beta Minion: Maxes around level 8.
- Bomber: Maxes around level 8.
- Baby Dragon: Maxes around level 8.
Other Important Upgrades:
- Star Laboratory: Maxes around level 4, allowing for troop upgrades.
- Builder Barracks: Maxes around level 6 to unlock the Baby Dragon and other troops.
- Army Camps: At BH4, you gain a 3rd Army Camp, which significantly increases your offensive power. You’ll want to build and max this immediately.
- Clock Tower: New at BH4, this building temporarily speeds up all progress in your Builder Base. Maxes around level 4.
- Healing Hut: New at BH4, maxes around level 4.
Upgrade Time & Cost: Maxing BH4 is a relatively quick process, often taking around 1-2 weeks of active play. The total Builder Gold and Builder Elixir required are in the hundreds of thousands to low millions, which is manageable at this stage. Consistent attacking to earn stars and utilizing the Clock Tower boost are crucial for efficient progression.