Clan Castle at Town Hall 13: max level 9. At Town Hall 18 the cap is level 14. Max level per Town Hall: TH3 1, TH4 2, TH5 2, TH6 3, TH7 3, TH8 4, TH9 5, TH10 6, TH11 7, TH12 8, TH13 9, TH14 10, TH15 11, TH16 12, TH17 13, TH18 14.
Tap a Town Hall to open this item there. Dashed: not available at that Town Hall yet.