HOI4 Building IDs

air_facility

Experimental Facilities for Aerodynamics and Avionics allow you to start research projects for aircraft, rockets and related electronics. · 12000 · 1

air_base

This building provides the state with deployment for your air forces. · 1250 · 10

anti_air_building

This building provides the state with protection from enemy bombers and ability to fire at attacking aircraft. · 2500 · 5

industrial_complex

This building provides the state with industry for production of civilian goods or construction of new buildings. Can be converted to military industry if needed. · 10800 · 20

commercial_nuclear_reactor

This building provides the state with enriched uranium for nuclear weapons and produces electricity for the civilian economy. · 35000 · 1

coastal_bunker

This building inflicts an attack penalty of for each fort level on the attacker in naval invasion combat. · 500 · 10

dam

Dams provide additional power to a state, improving industry and resource output. · 20000 · 1

dam_mountain

20000 · 1

fuel_silo

This building provides your nation with more room for stockpiling Fuel. · 5000

nuclear_reactor_heavy_water

This building provides the state with production of enriched Uranium for use in Nuclear weapons. Nuclear reactors using Heavy Water are somewhat cheaper to build than Graphite Reactors, but produce less material that can be used to produce nuclear weapons. · 25000 · 1

industrial_infrastructure

Augmentations to the existing civilian power infrastructure give us higher capabilities for high-intensity industrial operations. · 12000 · 1

infrastructure

This building provides the state with improvement of infrastructure. It increases your supply power in strategic regions and increases your divisions' speed, as well as increasing your raw resource extraction. · 6000 · 5

canal_kiel

The Kiel Canal Locks are needed in place in order for the canal to operate at full capacity, and destroying them would hinder shipping and movement for a long time. · 20000 · 1

bunker

This building inflicts an attack penalty of for each fort level on the attacker in combat. Attacking from multiple directions will reduce forts effect. · 500 · 10

land_facility

Experimental Facilities for Land Warfare allow you to start research projects related to various aspects of land warfare, such as special tanks, or artillery. · 12000 · 1

arms_factory

This building provides the state with industry for production of new military equipment. Can be converted to civilian industry if needed. · 7200 · 20

mega_gun_emplacement

Operating on the principle of multi-charge propulsion, this large caliber gun is designed to achieve unparalleled ranges in bombardment. Utilizing a series of underground tunnels, it accelerates shells to supersonic speeds before launching them towards distant targets. · 20000 · 1

naval_base

Extends the range of your fleet and provides repair services for it. Allows overseas supply and export of resources. Higher levels increases the supply throughput. · 5000 · 10

dockyard

This building provides the state with industry for building new ships. · 6400 · 20

naval_facility

Experimental Facilities for Naval Engineering allow you to start research projects related to Surface Ships and Submarines. A Naval Engineering Facility can only be created in a coastal province. · 12000 · 1

naval_headquarters

This building allows you to assign an admiral to increase effectivness of Task Forces operating within range of the Naval Headquarters. Up to headquarters can have an admiral assigned at the same time. Currently assigned: A Naval Headquarters can only be constructed in a coastal province that has Naval Base of at least level 8. · 10000 · 1

naval_supply_hub

This building allows your fleets to resupply and refuel in this base in addition to their Home Bases, potentially extending the operational range of your Task Forces. A Naval Supply Hub can only be constructed in a coastal province that has Naval Base of at least level 8. · 12500 · 1

nuclear_reactor

This building provides the state with production of enriched Uranium for use in Nuclear weapons. · 30000 · 1

nuclear_facility

Experimental Facilities for Nuclear Research allow you to start research projects relating to the use nuclear power. · 15000 · 1

canal_panama

The Panama Canal Locks are needed in place in order for the canal to operate at full capacity, and destroying them would hinder shipping and movement for a long time. · 20000 · 1

radar_station

Radar allows you to gain intel on enemy troops in nearby states. A higher radar level in a state increases the effective range of the radar. Radar also provides the state with better detection of enemy air forces, giving your planes a better chance to engage them. In addition radar increases the detection of enemy fleets at sea. · 3375 · 6

rail_way

Railways are used to connect Supply Hubs together to allow drawing of supply far from your capital. · 170 · 1

energy_infrastructure

Reinforced electrical supply lines and power infrastructure with a system of multiple redundancy ensures that our factories keep producing no matter what. · 12000 · 1

rocket_site

This building provides the state with deployment for produced rockets. · 6400 · 3

stronghold_network

An extensive defensive system of massive bunkers and strongly fortified positions, designed to repel enemy advances and secure key strategic areas. · 20000 · 1

supply_node

A Supply Hub is a point along a railway, outside of existing cities, where supply can be drawn. · 20000 · 1

synthetic_refinery

This building provides the state with · 14500 · 3