StarCraft/Zerg buildings

The Hatchery is the Zerg's primary building. It is where gathered resources are dropped off. Unlike the other races, the Hatchery is where all Zerg units spawn. The Hatchery also can be upgraded, opening up the tech tree each time. The first upgrade changes it to a Lair, the second to a Hive. At the Hatchery level, Burrow can be researched, and at the Lair level, Overlord Transport, Speed, and Sight can be upgraded.

Cost: 300/0
Hotkey: H
Available Upgrades

Burrow: 100/100

Ventral Sacs (Overlord transportation): 200/200, requires Lair

Pneumatized Carapace (Overlord speed): 150/150, requires Lair

Evolve Antennae (Overlord sight range): 150/150 requires Lair

Extractor

This building allows Drones to collect Vespene Gas, which is necessary for almost every unit.

Cost: 50/0
Hotkey: E

Spawning Pool

It allows the player to create Zerglings and has two upgrade options for Zerglings, speed and attack speed. The second upgrade, attack speed, cannot be completed until the Hatchery has been evolved into a Hive.

Cost: 200/0 (originally 150/0. Changed in Update 1.08)
Hotkey: S
Metabolic Boost(Speed): 100/100
Adrenal Glands(Attack speed): 200/200-needs Hive

Hydralisk Den

The Hydralisk Den as its name suggests allows the production and support of Hydralisks. Dedicated like most zerg buildings to one unit or unit type it allows two upgrades in StarCraft and a third with the Brood Wars expansion. The basic two upgrades that it allows are an increase in speed and an increase in range. Both quite useful as the Hydralisk is Considered by most to be the backbone unit of the Zerg forces. The Expansion upgrade is the Lurker upgrade which allows the Hydralisk to go back into its egg and re-emerge as a lurker.

Cost: 100/50
Hotkey: D
Leg Enhancement(Speed): 150/150
Grooved Spines(Greater Attack Range): 150/150
Lurker Aspect: 200/200-requires Lair-Brood War only

Evolution Chamber

This building is where the Zerg ground unit upgrades can be found, which are carapace, melee attacks, and ranged attacks. The second level can only be researched with a Lair, and the third level can only be researched with a Hive.

Cost: 75/0
Hotkey: V
Melee Attacks: 100/100, 175/175, 250/250
Missile Attacks: 100/100, 175/175, 250/250
Carapace: 150/150, 225/225, 300/300

Creep Colony

This building extends the creep so there is more building room. Can be mutated into Sunken or Spore colony for defense.

Cost: 75/0
Hotkey: C

Sunken Colony

Mutated from Creep Colony. It is the strongest ground defense of any species, dealing 40 explosive damage.

Cost: 50/0
Prerequisite: Creep Colony, Spawning Pool
Hotkey: U

Spore Colony

Mutated from Creep Colony. It is the sturdiest air defense of any species, with 400 hit points.

Cost: 50/0
Prerequisite: Creep Colony, Evolution Chamber
Hotkey: S

Queens Nest

Allows for production of Queen. Also allows Ensnare, Spawn Broodling, and greater energy capacity to be evolved. Prerequisite for Hive.

Cost: 150/100
Hotkey: Q
Prerequisite: Lair
Ensnare: 100/100
Spawn Broodling: 100/100
Gamite Synthesis: 150/150

Spire

One of the more important Zerg structures. Allows spawning of basic air units at the hatchery. Also air unit weapons and armor can be upgraded here. Can be upgraded into a Greater Spire, and the third level upgrade requires the Greater Spire.

Cost: 200/150
Hotkey: S
Prerequisite: Lair
Flyer Attacks: 100/100, 175/175, 250/250
Flyer Carapace: 150/150, 225/225, 300/300

Greater Spire

Allows the mutation of mutalisks into Guardians and Devourers, and the final air upgrades to be researched.

Cost: 100/150
Hotkey: G
Prerequisite: Spire and Hive.

Defiler Mound

Allows for production of Defiler. Also allows Consume, Plague, and greater energy capacity to be evolved.

Cost: 100/100
Hotkey: D
Prerequisite: Hive
Consume: 100/100
Plague: 150/150
Metasynaptic Node: 150/150

Ultralisk Cavern

Allows for production of Ultralisk. Allows evolution of Armor and Speed.

Cost: 150/200
Hotkey: U
Prerequisite: Hive
Anabolic Synthesis(Speed):150/150
Chitnous Plating(thicker carapace):150/150

Nydus Canal

Allows units to move from one place to another quickly. Once built, an exit node can be placed, but exit node must be on creep.

Cost: 150/0
Hotkey: N
Prerequisite: Hive