Town Hall

The Town hall is your main building and it has the highest HP of all buildings. It is responsible for what buildings you have available, what level they can be increased to and how many walls you have available. You should never stop increasing your Town Hall unless necessary. The 6th Hero base is available at Town hall 14 due to the prerequisite buildings becoming available then. The Town hall also offers 10 Walls per level.

Statistics:

Level HP Level Up  Cost Level Up Time Gold Mine / Mana Mill Gold / Mana Vault Army Camp Watch Tower Hero Base Bomb / Hero Trap Walls Might Increase
1 4,500  You begin with this N/A 2 1 1 1 0 0 0 50
2 5,500 1,700 Gold.png 2m 2 1 1 1 0 0 0 100
3 6,500 5,000 Gold.png 10m 2 1 2 1 1 0 0 150
4 7,500 10,000 Gold.png 30m 3 1 2 1 2 1 40 200
5 9,000 21,000 Gold.png 1h 3 1 2 2 3 2 50 250
6 10,500 36,000 Gold.png 2h 3 2 3 2 4 2 60 300
7 12,500 62,000 Gold.png 4h 3 2 3 2 5 3 70 350
8 14,500 104,000 Gold.png 8h 4 2 3 2 5 3 80 400
9 17,000 170,000 Gold.png 16h 4 2 3 3 5 4 90 450
10 20,000 240,000Gold.png 1d 4 3 3 3 5 4 100 500
11 23,000 380,000Gold.png 2d 4 3 4 3 5 5 110 550
12 26,500 540,000Gold.png 4d 5 3 4 3 5 5 120 600
13 30,500 740,000Gold.png 6d 5 3 4 4 5 6 130 650
14 35,500 980,000Gold.png 8d 5 4 4 4  6* 6 140 700
15 41,000 1,270,000Gold.png 10d 5 4 4 4 6 7 150 750
16 47,500 1,600,000Gold.png 12d 5 4 4 4 6 7 160 800
17 55,000 2,200,000Gold.png 14d 5 5 4 5 6 8 170 850
18 65,000 2,900,000Gold.png 16d 5 5 4 5 6 8 180 900
19 75,000 3,700,000Gold.png 20d 5 5 4 5 6 9 190 950
20 90,000 4,500,000Gold.png 24d 5 5 4 5 6 9 200 1000

In a 2015 update, town hall levels could go up to 25. The remaining 5 levels are shown below. Note that by level 25 you get an extra tower ( L.23), an extra Gold + Mana Vault (L.21), an extra Mana + Gold Mill (L.22) and only 20 extra walls ( L.21 and L. 24).

21 120,000 5,100,000Gold.png 26d 5 6 4 5 6 9 210 1050
22 150,000 5,800,000Gold.png 28d 6 6 4 5 6 10 210 1100
23 190,000 6,400,000Gold.png 30d 6 6 4 6 6 10 210 1150
24 230,000 7,100,000Gold.png 32d 6 6 4 6 6 10 220 1200
25 280,000 7,700,000Gold.png 34d 6 6 5 6 6 10 220 1250

This table shows at what Town hall level each unique building is unlocked. It also shows how many and to what level each other building can be increased, how much resource capacity you have and to what level you can upgrade your troops:

Level Unique buildings Decorations Unlocks Building Level Maximum Vaults Maximum Resources Maximum Troops
1 1-4 1 level 4 50,000 Tier 1, 4 star
2 1x Relic Hall
3  1x Arena, 1x Heroes Altar 30x Letters/Numbers 5-7 1 level 7 100,000 Tier 2, 1 star
4
5
6 1x Guild Hall 20x Flower II, 5x Christmas Tree, 3x Snowman, 3x Rose, 5x Baloons, 3x Flower, 1x Soccer Star Trophy, 8xFlags 8-10, tower 1-2 2 level 10 380,000 Tier 2, 2 star
7
8
9 11-13, tower 3-5 2 level 13 700,000 Tier 2, 4 star
10 1x Frost Witch Statue, 1x Thunder God Statue, 1x Ninja Statue, 1x Centaur Chieftain Statue 3 level 13 1,050,000 Tier 3, 2 star
11 (176 spaces)
12 14-16, tower 6-8 3 level 16 1,500,000 (200 spaces)
13
14 4 level 16 2,000,000 Tier 3, 3 star
15 17-19, tower 9-10 4 level 18 2,800,000 Tier 3, 4 star
16
17 19 5 level 19 4,000,000 Tier 3, 5 star
18 20 5 level 20 4,500,000 (240 spaces)
19
20

 

The following 5 levels of TH only make a few small changes. At Lvl 21, it unlocks all buildings to be built to level 22 and you can have up to 6 of each Vault at as high as level 22.