Best Builder Hall Level 4 Trophy/Defense Base Layouts for COC Clash of Clans 2025

Reaching Builder Hall level 4 is a significant milestone that dramatically expands your strategic options in the Builder Base. It introduces a powerful new air troop and one of the most formidable defenses in the early game. The upgrade costs 120,000 Builder Gold and takes 6 hours to complete. The Builder Hall itself adds a reinforced wooden balcony and a more prominent flag, showing its increased stature.

Key Unlocks: New Buildings and Defenses

Builder Hall 4 adds a major defensive threat and the infrastructure to support a growing village.

• Crusher (x1): This is the signature defense of BH4. The Crusher is a powerful area-damage defense that slams down on any ground troops that get too close, dealing massive damage capable of obliterating groups of Barbarians or even a Boxer Giant in a single hit. It is completely ineffective against air troops. It costs 150,000 Builder Gold and takes 4 hours to build.
• Air Bombs (x1): A dedicated anti-air defense that launches powerful bombs at flying troops. It is the primary defense against the newly unlocked Baby Dragons. It costs 200,000 Builder Gold and takes 8 hours to build.
• Additional Archer Tower (x1): A second Archer Tower allows for more flexible defensive setups, giving you another versatile defense that can target both ground and air units.
• Additional Army Camp (x1): Unlocks a fourth Army Camp, which is a crucial upgrade that significantly increases your total army housing space and offensive power.
• Additional Walls (x10 segments): These extra walls are vital for protecting your new Crusher and for further developing your base layout to funnel troops.
• B.O.B's Post: Rebuilding the ruins of B.O.B's Post allows you to start the multi-stage quest to unlock B.O.B, who functions as a second builder in the Builder Base, dramatically speeding up your progress.

New Offensive Potential: The Fiery Flying Toddler

Your attacking army takes to the skies with a powerful and versatile new air troop.

• Baby Dragon: Unlocked by upgrading the Builder Barracks to level 4, the Baby Dragon is a flying troop that deals ranged splash damage. Its unique special ability, Fiery Sneeze, causes it to become enraged and deal significantly more damage when no other friendly air units are nearby. This makes strategic placement of single Baby Dragons a powerful tactic.

Maximum Upgrade Levels at Builder Hall 4

To fully maximize your village before moving to Builder Hall 5, you will want to complete all the available upgrades.

• Defenses:
• Cannon: Can be upgraded to Level 4.
• Double Cannon: Can be upgraded to Level 4.
• Archer Tower: Can be upgraded to Level 4.
• Firecrackers: Can be upgraded to Level 4.
• Crusher: Can be upgraded to Level 4.
• Guard Post: Can be upgraded to Level 4.
• Air Bombs: Can be upgraded to Level 4.
• Walls: Can be upgraded to Level 4.
• Push Trap: Can be upgraded to Level 2.
• Mine: Can be upgraded to Level 4.
• Resource Buildings:
• Elixir Collector: Can be upgraded to Level 4.
• Gold Storage: Can be upgraded to Level 4.
• Elixir Storage: Can be upgraded to Level 4.
• Gem Mine: Can be upgraded to Level 4.
• Clock Tower: Can be upgraded to Level 4.
• Army Buildings & Other:
• Builder Barracks: Can be upgraded to Level 4 (to unlock the Baby Dragon).
• Star Laboratory: Can be upgraded to Level 4.
• Army Camp: A total of 4 can be built.
• B.O.B's Post: Can be built and upgraded to Level 1.
• Troop Levels (in the Star Laboratory):
• Raged Barbarian: Can be upgraded to Level 8.
• Sneaky Archer: Can be upgraded to Level 8.
• Boxer Giant: Can be upgraded to Level 8.
• Baby Dragon: Can be upgraded to Level 8.

Strategic Implications

Builder Hall 4 forces a major strategic shift. The introduction of the Crusher makes ground-based swarm attacks (like mass Raged Barbarians) much riskier. Players must learn to bait the Crusher with a single unit or destroy it from a distance with Sneaky Archers before committing the bulk of their ground army.

Conversely, the Baby Dragon opens up powerful air assault strategies. Learning to use their Fiery Sneeze ability by deploying them one by one is key to maximizing damage. This makes the new Air Bombs and upgrading your Archer Towers and Firecrackers crucial for defense. BH4 is a constant battle between devastating ground defense and powerful new air offense, and mastering both sides is essential for success. Additionally, starting the B.O.B quest as early as possible is a major long-term strategic advantage.