View infographic Progression · Upgrade checklist
Castle growth & troop milestones
The useful Barracks gates and the separate requirements for unlocking T10.
Progression · Base cost table
Base costs, required buildings and build times for every Castle upgrade transition.

Top Lords Guide
Castle reference
Castle upgrade
requirements & costs
One clear reference for every recorded level transition. Plan the next gate before you spend.
Castle 1 → 30: base upgrade reference
Upgrade
Required buildings · levels
Wood
Food
Coins
Base time
1 → 2
Farm 1
Townhouse 1
270
270
600
2s
2 → 3
Drill Ground 1
610
610
1.2K
4s
3 → 4
Builders' Hut 3
1.2K
1.2K
2.4K
1m 46s
4 → 5
Ward Tent 4
3K
3K
3.6K
9m 57s
5 → 6
Barracks 5
11K
11K
6K
42m 8s
6 → 7
Any faction building 6
44K
44K
8.8K
3h 8m
7 → 8
Barracks 7
110K
110K
22K
4h 41m
8 → 9
Scholar Tower I 7
Alliance Keep 7
290K
290K
58K
5h 28m
9 → 10
Barracks 9
Any faction building 9
870K
870K
174K
6h 34m
10 → 11
Scholar Tower I 10
Alliance Keep 10
1.7M
1.7M
340K
9h 11m
11 → 12
Barracks 11
Any faction building 11
2.6M
2.6M
520K
12h 51m
12 → 13
Scholar Tower I 12
Alliance Keep 12
3.9M
3.9M
780K
17h 59m
13 → 14
Barracks 13
Any faction building 13
5.9M
5.9M
1.18M
1d 2h 59m
14 → 15
Scholar Tower I 14
Alliance Keep 14
8.9M
8.9M
1.78M
1d 11h 4m
15 → 16
Barracks 15
Any faction building 15
12M
12M
2.4M
1d 21h 35m
16 → 17
Scholar Tower I 16
Alliance Keep 16
16M
16M
3.2M
2d 11h 15m
17 → 18
Barracks 17
Any faction building 17
21M
21M
4.2M
3d 5h 2m
18 → 19
Scholar Tower I 18
Alliance Keep 18
27M
27M
5.4M
4d 4h 8m
19 → 20
Barracks 19
Any faction building 19
38M
38M
7.6M
5d 10h 11m
20 → 21
Scholar Tower I 20
Alliance Keep 20
53M
53M
10.6M
7d 1h 14m
21 → 22
Barracks 21
Any faction building 21
69M
69M
13.8M
9d 4h
22 → 23
Scholar Tower I 22
Alliance Keep 22
90M
90M
18M
11d 21h 59m
23 → 24
Barracks 23
Any faction building 23
120M
120M
24M
15d 11h 47m
24 → 25
Scholar Tower I 24
Alliance Keep 24
150M
150M
30M
20d 3h 19m
25 → 26
Barracks 25
Any faction building 25
200M
200M
40M
26d 4h 19m
26 → 27
Scholar Tower I 26
Alliance Keep 26
260M
260M
52M
34d 48m
27 → 28
Barracks 27
Any faction building 27
340M
340M
68M
47d 15h 31m
28 → 29
Scholar Tower I 28
Alliance Keep 28
440M
440M
88M
66d 16h 56m
29 → 30
Barracks 29
Any faction building 29
570M
570M
114M
93d 9h 18m
Each row is the current level → next level. Costs cover the Castle upgrade itself; unfinished prerequisite buildings add their own costs. Times of one hour or more are rounded up to the next minute.
Any faction building means one eligible choice
Tribe Forge, Legion Bastion or Ranger Retreat, at the level shown. The shared prerequisite is counted once in a combined budget.
Apply your own bonuses separately
Resource reduction and construction speed are different inputs. A +10% speed bonus divides base time by 1.10; it does not subtract 10% from the timer.
Base reference table · no player buffs applied · placement 0 → 1 is outside this table. Exact seconds and combined prerequisite costs are available in the Castle calculator.
Reference edition · October 2026
Independent Top Lords field guide
toplordsguide.com
View infographic Progression · Upgrade checklist
The useful Barracks gates and the separate requirements for unlocking T10.
View infographic Progression · Training setup
Barracks tier gates and a stepped T9 layout, without treating training costs as promotion costs.