diff --git a/CHANGELOG.md b/CHANGELOG.md
index 56132b5..35d38ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 - [#68](https://github.com/lastorel/pytion/issues/68): insert Block support
 - [#70](https://github.com/lastorel/pytion/issues/70): fix database filtering using `*_time` attribute
 - [#72](https://github.com/lastorel/pytion/issues/72): `public_url` attr added
+- [#73](https://github.com/lastorel/pytion/issues/73): Unique ID page property added
 
 ## v1.3.4
 
diff --git a/README.md b/README.md
index ff2a304..7d38dbf 100644
--- a/README.md
+++ b/README.md
@@ -279,6 +279,7 @@ There are also useful **internal** classes:
 | `formula`                |                                  | -         | +                 | -           | n/a                 |                                     |                                                                                                              |
 | `relation`               | `List[LinkTo]`                   | +         | +                 | +           | +                   | `has_more: bool`                    | `single_property` / `dual_property`                                                                          |
 | `rollup`                 | depends on relation and function | +         | +                 | +           | n/a                 | ~~has_more~~\*\*\*\*\*              | `function`, `relation_property_id` / `relation_property_name`, `rollup_property_id` / `rollup_property_name` |
+| `unique_id`              | `int`                            | +         | +                 | +           | n/a                 |                                     | `prefix`                                                                                                     |
 | `created_time`\*\*\*     | `datetime`                       | +         | +                 | +           | n/a                 |                                     |                                                                                                              |
 | `created_by`\*\*\*       | `User`                           | +         | +                 | +           | n/a                 |                                     |                                                                                                              |
 | `last_edited_time`\*\*\* | `datetime`                       | +         | +                 | +           | n/a                 |                                     |                                                                                                              |
diff --git a/pytion/models.py b/pytion/models.py
index c2290f7..82e73f0 100644
--- a/pytion/models.py
+++ b/pytion/models.py
@@ -250,6 +250,10 @@ def __init__(self, data: Dict[str, Any]):
                 self.rollup_property_id = data[self.type].get("rollup_property_id")
                 self.rollup_property_name = data[self.type].get("rollup_property_name")
 
+        elif self.type == "unique_id":
+            if isinstance(data[self.type], dict):
+                self.prefix = data[self.type].get("prefix")
+
     def __str__(self):
         return self.name if self.name else self.type
 
@@ -286,6 +290,8 @@ def get(self) -> Optional[Dict[str, Dict]]:
                     data[self.type]["rollup_property_id"] = self.rollup_property_id
                 if self.rollup_property_name:
                     data[self.type]["rollup_property_name"] = self.rollup_property_name
+            elif self.type == "unique_id":
+                data[self.type] = {"prefix": self.prefix}
             else:
                 data[self.type] = {}
         return data
@@ -320,6 +326,8 @@ def create(cls, type_: Optional[str] = "", **kwargs):
             kwargs["status"] = {}
         elif type_ == "rollup":
             kwargs["rollup"] = kwargs
+        elif type_ == "unique_id":
+            kwargs["unique_id"] = kwargs
         return cls({"type": type_, **kwargs})
 
 
@@ -448,6 +456,9 @@ def __init__(self, data: Dict, name: str, **kwargs):
         if self.type == "phone_number":
             self.value: Optional[str] = data.get("phone_number")
 
+        if self.type == "unique_id":
+            self.value: int = data["unique_id"]["number"] if "number" in data["unique_id"] else 0
+
     def __str__(self):
         return str(self.value)
 
@@ -511,7 +522,7 @@ def get(self):
             return {self.type: []}
         elif self.type in ["created_time", "last_edited_by", "last_edited_time", "created_by"]:
             return None
-        elif self.type in ["formula", "rollup"]:
+        elif self.type in ["formula", "rollup", "unique_id"]:
             return {self.type: {}}
         return None
 
diff --git a/tests/test_models.py b/tests/test_models.py
index 0ea397e..acdb19c 100644
--- a/tests/test_models.py
+++ b/tests/test_models.py
@@ -66,6 +66,15 @@ def test_create__rollup(self):
         assert p_dict["rollup"]["rollup_property_id"] == "mvpx"
         assert "rollup_property_name" not in p_dict
 
+    def test_create__unique_id(self):
+        p = Property.create("unique_id", prefix="TT")
+        p_dict = p.get()
+        assert p.id is None
+        assert p.type == "unique_id"
+        assert p.to_delete is False
+        assert hasattr(p, "prefix")
+        assert p_dict["unique_id"]["prefix"] == "TT"
+
 
 class TestPropertyFull:
     def test_create__rollup_id(self, database_for_updates, database_for_pages):
@@ -137,6 +146,11 @@ def test_change__rollup(self, database_for_updates):
         assert database.obj.properties["Rollup 1"].function == old_function
         assert database.obj.properties["Rollup 1"].rollup_property_id == old_rollup_id
 
+    def test_create__unique_id(self):
+        # don't test creating unique_id property.
+        # on second iteration it breaks the database (error 500)
+        pass
+
 
 class TestPropertyValue:
     def test_create__status(self):
@@ -155,6 +169,14 @@ def test_create__relation(self):
         assert p_dict["relation"][0]["id"] == "04262843082a478d97f741948a32613c"
 
 
+class TestPropertyValueFull:
+    def test_read__unique_id(self, no, little_database):
+        page = no.pages.get("b85877eaf7bf4245a8c5218055eeb81f")
+        assert "uID" in little_database.obj.properties
+        assert little_database.obj.properties["uID"].prefix == "LD"
+        assert page.obj.properties["uID"].value == 3
+
+
 class TestBlock:
     def test_get__heading_1(self, no):
         block_id = "15a5790980db4e8798b9b7801385afbb"