Aoe4
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  • Units
      Hero
    • Lord of LancasterLord of Lancaster
      • Workers
    • VillagerVillager
    • Veteran DemilancerVeteran Demilancer
    • TraderTrader
    • MonkMonk
      • Infantry
    • SpearmanSpearman
    • Earl's GuardEarl's Guard
    • YeomanYeoman
    • CrossbowmanCrossbowman
    • HandcannoneerEarly Handcannoneer
    • Wynguard ArmyWynguard Army
    • Earl's RetinueEarl's Retinue
    • Garrison CommandGarrison Command
    • Gunpowder ContingentGunpowder Contingent
      • Cavalry
    • ScoutScout
    • HobelarHobelar
    • KnightKnight
      • Siege
    • Battering RamBattering Ram
    • Siege TowerSiege Tower
    • SpringaldSpringald
    • MangonelMangonel
    • Counterweight TrebuchetCounterweight Trebuchet
    • CulverinCulverin
      • Ships
    • Fishing BoatFishing Boat
    • Transport ShipTransport Ship
    • Demolition ShipDemolition Ship
    • Trade ShipTrade Ship
    • GalleyGalley
    • HulkHulk
    • CarrackCarrack
  • Buildings
      Landmarks
    • Capital Town CenterCapital Town Center
    • Abbey of KingsAbbey of Kings
    • Lancaster CastleLancaster Castle
    • The White TowerThe White Tower
    • King's CollegeKing's College
    • Wynguard PalaceWynguard Palace
    • Berkshire PalaceBerkshire Palace
      • Economy
    • FarmFarm
    • HouseHouse
    • Lumber CampLumber Camp
    • Mining CampMining Camp
    • MillMill
    • PalisadePalisade
    • Palisade GatePalisade Gate
    • BarracksBarracks
    • DockDock
    • Town CenterTown Center
    • ManorManor
    • MarketMarket
    • Archery RangeArchery Range
    • StableStable
    • BlacksmithBlacksmith
    • Stone WallStone Wall
    • Stone Wall GateStone Wall Gate
    • Siege WorkshopSiege Workshop
    • MonasteryMonastery
    • UniversityUniversity
      • Military
    • OutpostOutpost
    • Stone Wall TowerStone Wall Tower
    • KeepKeep
      • Wonders
    • Cathedral of St. ThomasCathedral of St. Thomas
  • Technologies
      Units
    • ForestryForestry
    • Survival TechniquesSurvival Techniques
    • WheelbarrowWheelbarrow
    • Extended LinesExtended Lines
    • TextilesTextiles
    • Fitted LeatherworkFitted Leatherwork
    • Iron UndermeshIron Undermesh
    • Naval ArrowslitsNaval Arrowslits
    • Specialized PickSpecialized Pick
    • Steeled ArrowSteeled Arrow
    • Double BroadaxDouble Broadax
    • Siege EngineeringSiege Engineering
    • ArrowslitsArrowslits
    • BloomeryBloomery
    • Fortify OutpostFortify Outpost
    • Professional ScoutsProfessional Scouts
    • HorticultureHorticulture
    • AdmiraltyAdmiralty
    • BillmenBillmen
    • Condensed Land PracticesCondensed Land Practices
    • Muster the NoblesMuster the Nobles
    • Open Field SystemOpen Field System
    • Armored HullArmored Hull
    • Drift NetsDrift Nets
    • Extra HammocksExtra Hammocks
    • Balanced ProjectilesBalanced Projectiles
    • Greased AxlesGreased Axles
    • Insulated HelmInsulated Helm
    • Shaft MiningShaft Mining
    • Wedge RivetsWedge Rivets
    • Herbal MedicineHerbal Medicine
    • IncendiariesIncendiaries
    • Lumber PreservationLumber Preservation
    • Military AcademyMilitary Academy
    • DecarbonizationDecarbonization
    • Springald CrewsSpringald Crews
    • Springald EmplacementSpringald Emplacement
    • Boiling OilBoiling Oil
    • FertilizationFertilization
    • Burgundian ImportsBurgundian Imports
    • Collar of EssesCollar of Esses
    • Hill TrainingHill Training
    • Military Tactics TrainingMilitary Tactics Training
    • Shire LevyShire Levy
    • Synchronized ShotSynchronized Shot
    • Warwolf TrebuchetWarwolf Trebuchet
    • ExplosivesExplosives
    • Heated ShotHeated Shot
    • Lightweight BeamsLightweight Beams
    • ShipwrightsShipwrights
    • SpyglassSpyglass
    • Angled SurfacesAngled Surfaces
    • Court ArchitectsCourt Architects
    • CupellationCupellation
    • Master SmithsMaster Smiths
    • PietyPiety
    • Platecutter PointPlatecutter Point
    • Siege WorksSiege Works
    • Cannon EmplacementCannon Emplacement
    • ChemistryChemistry
    • Crosscut SawCrosscut Saw
    • GeometryGeometry
    • Incendiary ArrowsIncendiary Arrows
    • Roller Shutter TriggersRoller Shutter Triggers
    • Silk BowstringsSilk Bowstrings
    • Tithe BarnsTithe Barns
    • Adjustable CrossbarsAdjustable Crossbars
    • Damascus SteelDamascus Steel
    • Swivel CannonSwivel Cannon
    • BiologyBiology
    • Elite Army TacticsElite Army Tactics
    • Precision Cross-BreedingPrecision Cross-Breeding
    • Serpentine PowderSerpentine Powder
    • Exact Militia ProgramExact Militia Program
    • Padded JackPadded Jack
    • ScutageScutage
    • Ships of the CrownShips of the Crown
    • Throwing Dagger DrillsThrowing Dagger Drills
  1. Home
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  3. Technologies
  4. Open Field System
Open Field System

Manor Technology 2/2

Open Field System

House of Lancaster

House of Lancaster

Advancements in feudal land distribution practices increase the build limit of Manors by +4 and their health by +200.

Patch History

2025-10-30 Season Twelve Update

House of Lancaster

  • Open Field System upgrade cost reduced from 200 Wood 400 Gold → 150 Wood 250 Gold.

2025-04-09 Patch 13.0.4343

House of Lancaster

  • Open Field System upgrade cost increased from 150 wood and 350 gold → 200 wood and 400 gold.

Research at

    Costs
    150wood
    250gold
    45time