This is a list of all the existing capabilities you can assign to buildings.
population_growth_bonus
- population growthpopulation_loyalty_bonus
- unusedpopulation_health_bonus
- population healthtrade_base_income_bonus
- multiplier to trade incometrade_level_bonus
- bonus to land tradetrade_fleet
- adds additional overseas trade routestaxable_income_bonus
- bonus to tax incomemine_resource
- generates income from miningfarming_level
- generates income from farmingroad_level
- upgrades roadsgate_strength
- upgrades gatesgate_defences
- adds burning oil if >0wall_level
- upgrades wallstower_level
- ballista towers if >1, arrow towers elsearmour
- provides armour upgradesstage_games
- allows staging gamesstage_races
- allows staging racesfire_risk
- unusedweapon_simple
- provides weapon upgradesweapon_missile
- provides weapon upgradesweapon_bladed
- provides weapon upgradesweapon_siege
- provides weapon upgradesweapon_other
- provides weapon upgradesupgrade_bodyguard
- unusedrecruits_morale_bonus
- morale bonus to units recruited hererecruits_exp_bonus
- experience bonus to units recruited herehappiness_bonus
- happiness bonuslaw_bonus
- law bonusconstruction_cost_bonus_military
- building cost reductionconstruction_cost_bonus_religious
- building cost reductionconstruction_cost_bonus_defensive
- building cost reductionconstruction_cost_bonus_other
- building cost reductionconstruction_time_bonus_military
- building time reductionconstruction_time_bonus_religious
- building time reductionconstruction_time_bonus_defensive
- building time reductionconstruction_time_bonus_other
- building time reductionextra_recruitment_points
- additional recruitment pointsextra_construction_points
- additional construction pointsrecruit
- allows recruiting unitsagent
- allows recruiting agentsreligious_belief
- increases religious conversionreligious_order
- suppresses religious unrestagent_limit_settlement
- sets the amount of a given agent type that can be recruited here (bonus does not work with this)dummy
- does nothing, but allows specifying a string