diff --git a/src/ares/behaviors/macro/build_structure.py b/src/ares/behaviors/macro/build_structure.py
index 62e8ec2..f463811 100644
--- a/src/ares/behaviors/macro/build_structure.py
+++ b/src/ares/behaviors/macro/build_structure.py
@@ -2,6 +2,7 @@
 from typing import TYPE_CHECKING
 
 from cython_extensions.geometry import cy_distance_to_squared
+from loguru import logger
 from sc2.data import Race
 from sc2.ids.unit_typeid import UnitTypeId as UnitID
 from sc2.position import Point2
@@ -13,6 +14,7 @@
     from ares import AresBot
 
 from ares.behaviors.macro.macro_behavior import MacroBehavior
+from ares.consts import BUILDING_SIZE_ENUM_TO_RADIUS
 from ares.managers.manager_mediator import ManagerMediator
 
 
@@ -91,6 +93,13 @@ class BuildStructure(MacroBehavior):
     reaper_wall: bool = False
 
     def execute(self, ai: "AresBot", config: dict, mediator: ManagerMediator) -> bool:
+        if self.structure_id not in STRUCTURE_TO_BUILDING_SIZE:
+            logger.error(
+                f"Invalid structure type passed to `BuildStructure`: "
+                f"{self.structure_id}"
+            )
+            return False
+
         # already enough workers on route to build this
         if (
             ai.not_started_but_in_building_tracker(self.structure_id)
@@ -167,11 +176,13 @@ def _enough_existing_at_this_base(self, mediator: ManagerMediator) -> bool:
             if not potential_placements[placement]["available"]
         ]
         num_structures: int = 0
+        radius_sq: float = BUILDING_SIZE_ENUM_TO_RADIUS[size] ** 2
+        structures_dict = mediator.get_own_structures_dict
         for t in taken:
             if [
                 s
-                for s in mediator.get_own_structures_dict[self.structure_id]
-                if cy_distance_to_squared(s.position, t) < 9.0
+                for s in structures_dict[self.structure_id]
+                if cy_distance_to_squared(s.position, t) < radius_sq
             ]:
                 num_structures += 1
         return num_structures >= self.to_count_per_base
diff --git a/src/ares/consts.py b/src/ares/consts.py
index 89f7257..1da28e3 100644
--- a/src/ares/consts.py
+++ b/src/ares/consts.py
@@ -194,6 +194,13 @@ class BuildingSize(str, Enum):
     TWO_BY_TWO = "TWO_BY_TWO"
 
 
+BUILDING_SIZE_ENUM_TO_RADIUS: dict[BuildingSize, float] = {
+    BuildingSize.FIVE_BY_FIVE: 2.5,
+    BuildingSize.THREE_BY_THREE: 1.5,
+    BuildingSize.TWO_BY_TWO: 1.0,
+}
+
+
 class BuildOrderOptions(str, Enum):
     ADDONSWAP = "ADDONSWAP"
     CANCEL_GAS = "CANCEL_GAS"
diff --git a/src/ares/managers/placement_manager.py b/src/ares/managers/placement_manager.py
index 761a833..4a46004 100644
--- a/src/ares/managers/placement_manager.py
+++ b/src/ares/managers/placement_manager.py
@@ -33,6 +33,7 @@
 from ares.config_parser import ConfigParser
 from ares.consts import (
     BUILDING_PLACEMENTS,
+    BUILDING_SIZE_ENUM_TO_RADIUS,
     DEBUG,
     DEBUG_OPTIONS,
     GAS_BUILDINGS,
@@ -84,11 +85,6 @@ class PlacementManager(Manager, IManagerMediator):
         BuildingSize.THREE_BY_THREE: (3, 3),
         BuildingSize.TWO_BY_TWO: (2, 2),
     }
-    BUILDING_SIZE_ENUM_TO_RADIUS: dict[BuildingSize, float] = {
-        BuildingSize.FIVE_BY_FIVE: 2.5,
-        BuildingSize.THREE_BY_THREE: 1.5,
-        BuildingSize.TWO_BY_TWO: 1.0,
-    }
     SKIP_CREEP_CHECK_IDS: set[UnitID] = {UnitID.HATCHERY, UnitID.NYDUSCANAL}
     UNBUILDABLES: set[UnitID] = {
         UnitID.UNBUILDABLEPLATESDESTRUCTIBLE,
@@ -293,7 +289,7 @@ def can_place_structure(
             return len(existing_gas_buildings) == 0
 
         size: BuildingSize = STRUCTURE_TO_BUILDING_SIZE[structure_type]
-        offset: float = self.BUILDING_SIZE_ENUM_TO_RADIUS[size]
+        offset: float = BUILDING_SIZE_ENUM_TO_RADIUS[size]
         origin_x: int = round(position[0] - offset)
         origin_y: int = round(position[1] - offset)