diff --git a/src/specklepy/objects/GIS/__init__.py b/src/specklepy/objects/GIS/__init__.py
index e3b536c..0385de2 100644
--- a/src/specklepy/objects/GIS/__init__.py
+++ b/src/specklepy/objects/GIS/__init__.py
@@ -12,6 +12,7 @@ from specklepy.objects.GIS.geometry import (
     GisLineElement,
     GisPointElement,
     GisPolygonElement,
+    GisPolygonGeometry,
     GisRasterElement,
     PolygonGeometry,
     PolygonGeometry3d,
@@ -21,6 +22,7 @@ from specklepy.objects.GIS.layers import RasterLayer, VectorLayer
 __all__ = [
     "VectorLayer",
     "RasterLayer",
+    "GisPolygonGeometry",
     "PolygonGeometry",
     "PolygonGeometry3d",
     "GisPolygonElement",
diff --git a/src/specklepy/objects/GIS/features.py b/src/specklepy/objects/GIS/features.py
index 7e6a89e..7b85afa 100644
--- a/src/specklepy/objects/GIS/features.py
+++ b/src/specklepy/objects/GIS/features.py
@@ -1,4 +1,4 @@
-from typing import List
+from typing import List, Optional
 
 from specklepy.objects.base import Base
 from specklepy.objects.geometry import Mesh, Point, Polyline
@@ -10,6 +10,12 @@ class GisNonGeometricFeature(Base, speckle_type="Objects.GIS.GisNonGeometricFeat
 
     attributes: Base
 
+    def __init__(
+        self,
+        attributes: Optional[Base] = None,
+    ) -> None:
+        self.attributes = attributes or Base()
+
 
 class GisPointFeature(
     Base,
@@ -25,6 +31,14 @@ class GisPointFeature(
     def geometry(self) -> List[Point]:
         return self.displayValue
 
+    def __init__(
+        self,
+        attributes: Optional[Base] = None,
+        displayValue: Optional[List[Point]] = None,
+    ) -> None:
+        self.attributes = attributes or Base()
+        displayValue = displayValue or []
+
 
 class GisPolylineFeature(
     Base,
@@ -40,6 +54,14 @@ class GisPolylineFeature(
     def geometry(self) -> List[Polyline]:
         return self.displayValue
 
+    def __init__(
+        self,
+        attributes: Optional[Base] = None,
+        displayValue: Optional[List[Point]] = None,
+    ) -> None:
+        self.attributes = attributes or Base()
+        displayValue = displayValue or []
+
 
 class GisPolygonFeature(
     Base,
@@ -52,6 +74,16 @@ class GisPolygonFeature(
     displayValue: List[Mesh]
     geometry: List[PolygonGeometry]
 
+    def __init__(
+        self,
+        geometry: List[PolygonGeometry],
+        attributes: Optional[Base] = None,
+        displayValue: Optional[List[Point]] = None,
+    ) -> None:
+        self.geometry = geometry
+        self.attributes = attributes or Base()
+        displayValue = displayValue or []
+
 
 class GisMultipatchFeature(
     Base,
@@ -63,3 +95,13 @@ class GisMultipatchFeature(
     attributes: Base
     displayValue: List[Mesh]
     geometry: List[Base]  # GisMultipatchGeometry or PolygonGeometry3d
+
+    def __init__(
+        self,
+        geometry: List[Base],
+        attributes: Optional[Base] = None,
+        displayValue: Optional[List[Point]] = None,
+    ) -> None:
+        self.geometry = geometry
+        self.attributes = attributes or Base()
+        displayValue = displayValue or []
diff --git a/src/specklepy/objects/GIS/geometry.py b/src/specklepy/objects/GIS/geometry.py
index cb7fe57..a3d4769 100644
--- a/src/specklepy/objects/GIS/geometry.py
+++ b/src/specklepy/objects/GIS/geometry.py
@@ -14,26 +14,36 @@ from specklepy.objects.geometry import (
 )
 
 
-class PolygonGeometry(
-    Base, speckle_type="Objects.GIS.PolygonGeometry", detachable={"displayValue"}
-):
+class PolygonGeometry(Base, speckle_type="Objects.GIS.PolygonGeometry"):
     """GIS Polygon Geometry"""
 
     boundary: Polyline
     voids: List[Polyline]
-    displayValue: List[Mesh]
+
+    def __init__(
+        self,
+        boundary: Polyline,
+        voids: Optional[List[Polyline]] = None,
+    ) -> None:
+        self.boundary = boundary
+        self.voids = voids or []
+
+
+GisPolygonGeometry = PolygonGeometry
 
 
 class PolygonGeometry3d(
     PolygonGeometry,
     speckle_type="Objects.GIS.PolygonGeometry3d",
-    detachable={"displayValue"},
 ):
     """GIS Polygon3d Geometry"""
 
-    boundary: Polyline
-    voids: List[Polyline]
-    displayValue: List[Mesh]
+    def __init__(
+        self,
+        boundary: Polyline,
+        voids: Optional[List[Polyline]] = None,
+    ) -> None:
+        super().__init__(boundary=boundary, voids=voids)
 
 
 @deprecated(version="2.20", reason="Replaced with GisPolygonFeature")