From The OpenDominion Encyclopedia
Revision as of 18:19, 8 January 2020 by Oment (talk | contribs) (Updated for round 16.)
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Buildings are the backbone of your dominion and provide you with production and various bonuses.

They can only be constructed on acres of barren land. Buildings cost platinum and lumber, and require 1 acre of barren land. The cost in platinum and lumber increases depending on your total land size.

Each buildings can only be built on a specific land type. The land type for each building is always the same, except for Homes, which depends on your race.

All buildings take 12 hours to build. You can instantly destroy buildings.


Building Land Type Description
Home Race Specific Houses 30 people.
Diamond Mine Cavern Produces 15 gems per hour.
School Cavern Produces (1 - (Schools / Total Land)) research points per hour (minimum of 0.5).
Forest Haven Forest Gives 20 peasants .75 defense each

Reduces losses on failed spy operations by 3 * (Forest Havens / Total Land)% to a maximum bonus of 30%

Reduces fireball damage by 8 * (Forest Havens / Total Land) % (based on total population at home), to a maximum bonus of 80%

Reduces stolen platinum by 8 * (Forest Havens / Total Land) %, to a maximum of -80% stolen.

Lumberyard Forest Produces 50 lumber per hour.
Barracks Hill Houses 36 trained or training military units. Does not increase capacity as other buildings do for population bonuses.
Factory Hill Reduces building construction costs by 4 * (Factories / Total Land)% to a maximum of 75% bonus

Reduces re-zoning costs by 3 * (Factories / Total Land)% to a maximum of 75% bonus

Guard Tower Hill Increases Defensive Power by 1.75 * (Guard Towers / Total Land)% to a maximum of 35% bonus
Shrine Hill Reduces casualties on offense by 5 * (Shrines / Total Land)% to a maximum of 80% bonus
Gryphon Nest Mountain Increases Offensive Power by 1.75 * (Gryphon Nests / Total Land)% to a maximum of 35% bonus
Ore Mine Mountain Produces 60 ore per hour.
Alchemy Plain Produces 45 platinum per hour.
Farm Plain Produces 80 bushels of food per hour.
Masonry Plain Increases ALL Castle Bonuses by 2.75 * (Masonries / Total Land)%, no maximum

Reduces Lightning Bolt damage by 0.75 * (Masonries / Total Land)%, maximum 25% reduction

Smithy Plain Reduces Military Unit costs (except Wizards, ArchMages, and Spies) by 2 * (Smithies / Total Land)% to a maximum of 36% bonus.

Ore costs are affected for all races but the Gnomes. Platinum costs affected for all races.

Temple Swamp Increases population growth rate by 6 * (Temples / Total Land)%

Reduces defensive bonuses of a target dominion during invasion by 1.5 * (Temples / Total Land)% to a minimum of 0 defensive bonus (maximum reduction 25%)

Tower Swamp Produces 25 mana per hour.
Wizard Guild Swamp Increases Wizard Strength refresh rate by 1% for every 10% guilds, up to a refresh bonus of 2%

Decreases cost of Wizards and ArchMages by 2 * (Wizard Guilds / Total Land)%, to a maximum bonus of 40%

Decreases cost of spells by 2 * (Wizard Guilds / Total Land)%, to a maximum bonus of 40%

Dock Water Produces 1 boat every 20 hours and 35 bushels of food per hour.

Each dock will protect 2.5 boats you own from being sunk.


Constructing buildings costs platinum and lumber. The formulas are listed below.

Platinum cost

850+([Total Land]-250)*1.53

Lumber cost

88+([Total Land]-250)*0.35

Destroy Building

You can destroy buildings by going to the Destroy Buildings page.

Destroying a building is immediate and frees up one acre of the corresponding land type.

See Also