diff --git a/packages/core/src/ifc/IfcRelationsIndexer/index.ts b/packages/core/src/ifc/IfcRelationsIndexer/index.ts
index 057572512..1659c425f 100644
--- a/packages/core/src/ifc/IfcRelationsIndexer/index.ts
+++ b/packages/core/src/ifc/IfcRelationsIndexer/index.ts
@@ -76,6 +76,11 @@ export class IfcRelationsIndexer extends Component implements Disposable {
     "ConnectedTo",
     "ConnectedFrom",
     "ReferencedBy",
+    "Declares",
+    "HasContext",
+    "Controls",
+    "IsNestedBy",
+    "Nests",
   ];
 
   private _ifcRels: IfcRelations = [
@@ -90,6 +95,9 @@ export class IfcRelationsIndexer extends Component implements Disposable {
     WEBIFC.IFCRELFLOWCONTROLELEMENTS,
     WEBIFC.IFCRELCONNECTSELEMENTS,
     WEBIFC.IFCRELASSIGNSTOPRODUCT,
+    WEBIFC.IFCRELDECLARES,
+    WEBIFC.IFCRELASSIGNSTOCONTROL,
+    WEBIFC.IFCRELNESTS,
   ];
 
   constructor(components: Components) {
diff --git a/packages/core/src/ifc/IfcRelationsIndexer/src/relToAttributesMap.ts b/packages/core/src/ifc/IfcRelationsIndexer/src/relToAttributesMap.ts
index ced30f586..c435923a9 100644
--- a/packages/core/src/ifc/IfcRelationsIndexer/src/relToAttributesMap.ts
+++ b/packages/core/src/ifc/IfcRelationsIndexer/src/relToAttributesMap.ts
@@ -83,4 +83,25 @@ export const relToAttributesMap = new Map<
       forRelating: "ReferencedBy",
     },
   ],
+  [
+    WEBIFC.IFCRELDECLARES,
+    {
+      forRelated: "HasContext",
+      forRelating: "Declares",
+    },
+  ],
+  [
+    WEBIFC.IFCRELASSIGNSTOCONTROL,
+    {
+      forRelated: "HasAssignments",
+      forRelating: "Controls",
+    },
+  ],
+  [
+    WEBIFC.IFCRELNESTS,
+    {
+      forRelated: "Nests",
+      forRelating: "IsNestedBy",
+    },
+  ],
 ]);
diff --git a/packages/core/src/ifc/IfcRelationsIndexer/src/types.ts b/packages/core/src/ifc/IfcRelationsIndexer/src/types.ts
index 34c3f4ff7..3a0e33ab6 100644
--- a/packages/core/src/ifc/IfcRelationsIndexer/src/types.ts
+++ b/packages/core/src/ifc/IfcRelationsIndexer/src/types.ts
@@ -29,6 +29,11 @@ export type InverseAttributes = [
   "ConnectedTo",
   "ConnectedFrom",
   "ReferencedBy",
+  "Declares",
+  "HasContext",
+  "Controls",
+  "IsNestedBy",
+  "Nests",
 ];
 
 export type InverseAttribute = InverseAttributes[number];
@@ -48,6 +53,9 @@ export type IfcRelations = [
   typeof WEBIFC.IFCRELFLOWCONTROLELEMENTS,
   typeof WEBIFC.IFCRELCONNECTSELEMENTS,
   typeof WEBIFC.IFCRELASSIGNSTOPRODUCT,
+  typeof WEBIFC.IFCRELDECLARES,
+  typeof WEBIFC.IFCRELASSIGNSTOCONTROL,
+  typeof WEBIFC.IFCRELNESTS,
 ];
 
 export type IfcRelation = IfcRelations[number];