“Extends free construction time.”
The Builder’s Hut is a building in Last War Survival that helps manage upgrade times. Each upgrade to the Builder’s Hut reduces the time it takes to complete upgrades. You can also assign survivors to work in the Builder’s Hut which can further decrease upgrade times based on the survivors’ rarity.
Upgrade Requirements
| Level | Iron | Food | Coin | Upgrade Time | Power | Free Speed-up Time |
|---|---|---|---|---|---|---|
| 1 | 90 | 30 | – | 6s | 500 | – |
| 2 | 230 | 75 | – | 12s | 1,000 | 10s |
| 3 | 1,000 | 340 | – | 40s | 1,500 | 20s |
| 4 | 2,500 | 840 | – | 1m 57s | 2,000 | 30s |
| 5 | 20,000 | 6,800 | – | 11m 42s | 2,500 | 1m |
| 6 | 61,000 | 20,000 | – | 23m 24s | 3,000 | 1m 30s |
| 7 | 120,000 | 41,000 | – | 46m 48s | 3,500 | 2m |
| 8 | 190,000 | 65,000 | – | 1h 31m 20s | 4,100 | 3m |
| 9 | 310,000 | 100,000 | 33,000 | 2h 4m 49s | 4,800 | 4m |
| 10 | 370,000 | 120,000 | 40,000 | 2h 42m 16s | 5,600 | 5m |
| 11 | 930,000 | 310,000 | 100,000 | 3h 30m 56s | 6,800 | 6m |
| 12 | 1,600,000 | 530,000 | 170,000 | 4h 34m 12s | 8,400 | 7m |
| 13 | 1,700,000 | 580,000 | 190,000 | 5h 56m 27s | 10,100 | 8m |
| 14 | 2,400,000 | 810,000 | 260,000 | 6h 52m 50s | 12,100 | 9m |
| 15 | 3,400,000 | 1,100,000 | 360,000 | 7h 42m 54s | 14,400 | 10m |
| 16 | 6,100,000 | 2,000,000 | 650,000 | 9h 37m 58s | 17,500 | 11m |
| 17 | 7,900,000 | 2,600,000 | 840,000 | 1d 14h 24m 8s | 21,000 | 12m |
| 18 | 13,200,000 | 4,300,000 | 1,400,000 | 1d 18h 32m 35s | 25,600 | 13m |
| 19 | 17,000,000 | 5,500,000 | 1,800,000 | 2d 1h 3m 53s | 30,700 | 14m |
| 20 | 30,000,000 | 10,000,000 | 3,200,000 | 2d 11h 5m 26s | 37,500 | 15m |
| 21 | 42,000,000 | 14,000,000 | 4,500,000 | 2d 20h 58m 18s | 45,500 | 16m |
| 22 | 54,000,000 | 18,000,000 | 5,800,000 | 3d 18h 47m 16s | 54,600 | 17m |
| 23 | 68,000,000 | 23,000,000 | 7,300,000 | 4d 5h 5m 38s | 64,800 | 18m |
| 24 | 85,000,000 | 28,000,000 | 9,100,000 | 4d 10h 24m 9s | 76,200 | 19m |
| 25 | 140,000,000 | 48,000,000 | 15,000,000 | 6d 4h 57m 48s | 90,800 | 20m |
| 26 | 200,000,000 | 67,000,000 | 22,000,000 | 8d 7h 30m 22s | 108,300 | 22m |
| 27 | 260,000,000 | 88,000,000 | 28,000,000 | 13d 16h 1m 33s | 128,200 | 24m |
| 28 | 370,000,000 | 120,000,000 | 39,000,000 | 14d 8h 22m 8s | 151,800 | 26m |
| 29 | 520,000,000 | 170,000,000 | 55,000,000 | 21d 4h 20m 27s | 179,800 | 28m |
| 30 | 720,000,000 | 240,000,000 | 77,000,000 | 28d | 212,800 | 30m |
The resource requirements shown in the table above represent the base values needed. This means the actual costs may be slightly lower due to various factors, such as research and buffs.