Aesculapium + Hostel Dieu (Middle Ages) = Hospice

*Atrium Vestae + *Residentia Politicus (Middle Ages) = Beggar's Settlement
Caution: This evolution will transform the building from an religious facility to a political one.

Castrum + Castellum (Middle Ages) = Castel

Ceramic Workshop + Glazed Pottery Workshop (Middle Ages) = Stoneware Workshop

*Domus + Demor (Middle Ages) = Villa

Emporium + Portus (Middle Ages) = Salt Port

Ergasterion + Wheelwright Workshop (Middle Ages) = Butcher's Mail
Caution: This evolution will transform the building from a production facility to a commercial one.

Ergasterion + Spices Trade (Middle Ages) = Herbal Merchant

Heiliaea + Mallus (Middle Ages) = Missi Dominici

Necropolis + *Cemetery (Middle Ages) = Tomb

*Praesidium + *Arsenal (Middle Ages) = Garrison Barracks

Schola + Episcopal School (Middle Ages) = Liberal Arts Class

Schola + *Gregorian School (Middle Ages) = Monastic Class

Statio + *Milites Christi (Middle Ages) = Specialised Armoury

Statio + *Barracks (Middle Ages) = Citadel

Templum + Church (Middle Ages) = Basilica

Theatrum + Manor (Middle Ages) = Heart of Political Life.
Caution: This evolution will transform the building from an educational facility to a political one.

Tullianum + Dungeon (Middle Ages) = Oubliettes


*Indicates a faction-specific building.


Note 01: Upon advancing to the next age you will lose access to any buildings not yet built.

Note 02: As of v0.216.14, when multiple evolution options are available, you can choose only one option per age. For example, if you build two Ergasterions and evolve one into a Herbal Merchant, you cannot evolve the other into a Butcher’s Mail later. Both Ergasterions must be evolved into a Herbal Merchant. Addendum to Note 02: This may require additional testing. As I continue to play, I am beginning to wonder if building evolution's might be influenced by faction dynamics.

Note 03: To unlock the building combinations above, first research the corresponding building in the blueprints section. Each new unlock reveals a new combination.

Note 04: Once a blueprint has been researched, you can immediately evolve a building without needing to construct the new building first - provided you have enough resources.

~~~ END OF EARLY ACCESS~~~

I will continue to update these lists as the devs release new updates.

Archivum
Sophists (Antiquity Education Faction)


Atrium Vestae
Mysteries of Eleusis (Antiquity Religious Faction):


Domus
Blood of the Flavians (Antiquity Political Faction):


Khrusokhoeion
Sodalities of Mithra (Antiquity Production Faction):


Officina Pecuniaria
Collegium Nummulariorum (Antiquity Commercial Faction):


Praesidium
Scipio Family (Antiquity Military Faction):

Arsenal
Knights Templar (Middle Ages Military Faction)


Barracks
Brotherhood of Saint George (Middle Ages Military Faction)


Cemetery
Brotherhood of the Flagellants (Middle Ages Religious Faction)


Gregorian School
Beguines and Beghards (Middle Ages Religious Faction):


Milites Christi
Hanseatic League (Middle Ages Commercial Faction)


Residentia Politicus
Plantagenet Dynasty (Middle Ages Political Faction):

Aesculapium: ee-SK-yoo-LAY-pee-uhm.

Atrium Vestae: AH-tree-um VES-tie

Castellum: Kas-TEL-lum

Castrum: KAS-trum

Emporium: em-POH-ree-uhm

Ergasterion: er-gas-TEER-ee-on

Heiliaea: hee-lee-AY-uh

Khrusokhoeion: Khroo-so-KHO-ee-on

Milites Christi: Mee-LEE-tes KREE-stee

Officinia Pecuniara: Oh-fee-KEE-nee-ah Peh-KOO-nee-ah-rah

Oubliettes: oo-blee-ETs

Praesidium: Pry-SIH-dee-um

Schola: SKOH-lah

Templum: TEM-plum

Theatrum: Teh-AH-trum

Tullianum : Tuh-lee-AH-num

Residentia Politicus: Reh-zee-DEN-shuh Poh-LIH-tih-kus