diff --git a/__pycache__/monop_parser.cpython-310.pyc b/__pycache__/monop_parser.cpython-310.pyc
index a3a2d8a..38d2321 100644
Binary files a/__pycache__/monop_parser.cpython-310.pyc and b/__pycache__/monop_parser.cpython-310.pyc differ
diff --git a/cardinal-plugin/monop/monop_parser.py b/cardinal-plugin/monop/monop_parser.py
index 9b913a4..7fab73e 100644
--- a/cardinal-plugin/monop/monop_parser.py
+++ b/cardinal-plugin/monop/monop_parser.py
@@ -285,6 +285,7 @@ class MonopParser:
                 
                 if not is_info and g._buy_pending:
                     # Resolve: use checkpoint peek if available
+                    bought = False
                     m_ck = self.CHECKPOINT_RE.match(msg)
                     if m_ck:
                         ck_money = int(m_ck.group(3))
@@ -296,6 +297,7 @@ class MonopParser:
                             if ck_name == cp_buy.name:
                                 if abs(ck_money - expected) < abs(ck_money - cp_buy.money):
                                     cp_buy.money -= g.pending_buy_cost
+                                    bought = True
                             else:
                                 # Checkpoint is for next player; can't peek buyer's money
                                 # Use last user input: if "n" or "no", declined
@@ -303,10 +305,17 @@ class MonopParser:
                                     pass  # declined
                                 else:
                                     cp_buy.money -= g.pending_buy_cost
+                                    bought = True
                     else:
                         cp_buy = g.current_player
                         if cp_buy and g.pending_buy_cost:
                             cp_buy.money -= g.pending_buy_cost
+                            bought = True
+                    # Assign ownership if purchase confirmed
+                    if bought and cp_buy:
+                        sq_id = cp_buy.location
+                        if 0 <= sq_id < 40:
+                            g.property_owner[sq_id] = cp_buy.number
                     g._buy_pending = False
                     g.pending_buy_cost = None
 
@@ -759,6 +768,12 @@ class MonopParser:
             buyer = g.get_player(name=name, number=num)
             if buyer:
                 buyer.money -= price
+                # The auctioned property is at the current player's location
+                cp = g.current_player
+                if cp:
+                    sq_id = cp.location
+                    if 0 <= sq_id < 40:
+                        g.property_owner[sq_id] = num
             return
 
         if self.NOBODY_RE.match(msg):
diff --git a/monop_parser.py b/monop_parser.py
index 9b913a4..7fab73e 100644
--- a/monop_parser.py
+++ b/monop_parser.py
@@ -285,6 +285,7 @@ class MonopParser:
                 
                 if not is_info and g._buy_pending:
                     # Resolve: use checkpoint peek if available
+                    bought = False
                     m_ck = self.CHECKPOINT_RE.match(msg)
                     if m_ck:
                         ck_money = int(m_ck.group(3))
@@ -296,6 +297,7 @@ class MonopParser:
                             if ck_name == cp_buy.name:
                                 if abs(ck_money - expected) < abs(ck_money - cp_buy.money):
                                     cp_buy.money -= g.pending_buy_cost
+                                    bought = True
                             else:
                                 # Checkpoint is for next player; can't peek buyer's money
                                 # Use last user input: if "n" or "no", declined
@@ -303,10 +305,17 @@ class MonopParser:
                                     pass  # declined
                                 else:
                                     cp_buy.money -= g.pending_buy_cost
+                                    bought = True
                     else:
                         cp_buy = g.current_player
                         if cp_buy and g.pending_buy_cost:
                             cp_buy.money -= g.pending_buy_cost
+                            bought = True
+                    # Assign ownership if purchase confirmed
+                    if bought and cp_buy:
+                        sq_id = cp_buy.location
+                        if 0 <= sq_id < 40:
+                            g.property_owner[sq_id] = cp_buy.number
                     g._buy_pending = False
                     g.pending_buy_cost = None
 
@@ -759,6 +768,12 @@ class MonopParser:
             buyer = g.get_player(name=name, number=num)
             if buyer:
                 buyer.money -= price
+                # The auctioned property is at the current player's location
+                cp = g.current_player
+                if cp:
+                    sq_id = cp.location
+                    if 0 <= sq_id < 40:
+                        g.property_owner[sq_id] = num
             return
 
         if self.NOBODY_RE.match(msg):