As you increase your Assembly you unlock certain milestones/buildings (cottages not included)
Level 2 - Shop Unlocked
Level 10 - Granary Unlocked
Level 11 - Academy Unlocked
Level 12 - Market Unlocked
Level 15 - Barracks Unlocked (Note if you do not put troop into your barracks at this level you will not lose troops when you fight)
Level 16 - You begin losing troops based on how many you lose in battle, lack of troop will in less that 100% faculty during battles.
Level 25 - Tax Office Unlocked
Level 30 - Commission Unlocked, Aide Unlocked
Level 35 - Mint Unlocked
Level 36 - Losing an expedition will now remove a divinity.
Level 40 - Level 2 Aide unlocked, Daily Quest Unlocked
Level 41 - Trading Post Unlocked
Level 45 - Treasury Unlocked
Level 50 - Level 3 Aide Unlocked
Level 51 - Free Daily Commission Unlocked
Level 60 - Level 4 Aide Unlocked
Level 82 - Alchemy Lab Unlocked (must level up to level 85 to refine)
Level 85 - Second Training Ground Unlocked
Level 101 - Enchanment of Equipment (don't know much about this yet)
Level 2 - Shop Unlocked
Level 10 - Granary Unlocked
Level 11 - Academy Unlocked
Level 12 - Market Unlocked
Level 15 - Barracks Unlocked (Note if you do not put troop into your barracks at this level you will not lose troops when you fight)
Level 16 - You begin losing troops based on how many you lose in battle, lack of troop will in less that 100% faculty during battles.
Level 25 - Tax Office Unlocked
Level 30 - Commission Unlocked, Aide Unlocked
Level 35 - Mint Unlocked
Level 36 - Losing an expedition will now remove a divinity.
Level 40 - Level 2 Aide unlocked, Daily Quest Unlocked
Level 41 - Trading Post Unlocked
Level 45 - Treasury Unlocked
Level 50 - Level 3 Aide Unlocked
Level 51 - Free Daily Commission Unlocked
Level 60 - Level 4 Aide Unlocked
Level 82 - Alchemy Lab Unlocked (must level up to level 85 to refine)
Level 85 - Second Training Ground Unlocked
Level 101 - Enchanment of Equipment (don't know much about this yet)