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Under Floor Drainage Aorsoi (Imperator Augustus)Aorsoi (Imperator Augustus) Construction Tier 2

Under Floor Drainage

Who wants to live in a damp building?

For many years it was thought that the Romans were the only people in Europe to develop under floor drainage. However, the settlement of Chysauster in Madron, Cornwall proves that the Celts also developed this technology. Chysauster is one of the best preserved early Celtic stone villages; it was constructed before the Roman invasion of Britain and continued to be inhabited until the 4th century AD. Out of the nine oval houses found in the village only one had under floor drainage, which may indicate that it was a symbol of prestige.


Under Floor Drainage

Node Set

Tier 2






  • -3% building construction costs (all regions)
  • +3 growth in all provinces per turn (all provinces)
  • -1 provincial capital and minor settlement main chain construction times (all regions)
Requires Technologies Earth WorksEarth Works
Enables Buildings ReservoirReservoir