diff --git a/Doc/Collection/Collection.md b/Doc/Collection/Collection.md
index 983ec6623..995861b3f 100644
--- a/Doc/Collection/Collection.md
+++ b/Doc/Collection/Collection.md
@@ -17,6 +17,7 @@ An administrative grouping of entities that are adressed and treated as a unit f
 * [FurnitureCollection](FurnitureCollection.md)
 * [Portfolio](Portfolio.md)
 * [Premises](Premises.md)
+* [RealEstate](RealEstate.md)
 * [Loop](Loop/Loop.md)
 * [System](System/System.md)
 
diff --git a/Doc/Collection/RealEstate.md b/Doc/Collection/RealEstate.md
new file mode 100644
index 000000000..eb971fe98
--- /dev/null
+++ b/Doc/Collection/RealEstate.md
@@ -0,0 +1,29 @@
+[Index](../index.md) > [Collection](Collection.md) > [RealEstate](#)
+# RealEstate
+
+The legal/administrative representation of some lands and/or buildings. I.e., "Fastighet" (Swedish), "Ejendom" (Denmark), etc.
+
+
+**Display name:** Real Estate<br />
+**DTMI:** dtmi:org:w3id:rec:RealEstate;1
+
+---
+
+## Relationships
+
+|Name|Display name|Description|Multiplicity|Target|Properties|Writable|
+|-|-|-|-|-|-|-|
+|includes|**en**: includes||0-Infinity|[Architecture](../Space/Architecture/Architecture.md)||True|
+### Inherited Relationships
+* **[Collection](Collection.md):** documentation
+
+---
+
+## Properties
+
+### Inherited Properties
+* **[Collection](Collection.md):** customTags, externalIds, name
+
+---
+
+## Target Of
diff --git a/Doc/index.full.md b/Doc/index.full.md
index 0b81a74ca..ef4b4eb0b 100644
--- a/Doc/index.full.md
+++ b/Doc/index.full.md
@@ -311,6 +311,7 @@
     * [Portfolio](Collection/Portfolio.md)
     * [Premises](Collection/Premises.md)
     * [PV_Array](Collection/PV_Array.md)
+    * [RealEstate](Collection/RealEstate.md)
     * [System](Collection/System/System.md)
         * [Domestic_Hot_Water_System](Collection/System/Domestic_Hot_Water_System.md)
         * [Electrical_System](Collection/System/Electrical_System/Electrical_System.md)
diff --git a/Doc/index.md b/Doc/index.md
index 229c628ab..e5e33a53a 100644
--- a/Doc/index.md
+++ b/Doc/index.md
@@ -49,6 +49,7 @@ For an index of the entire inheritance tree (much larger), see the [Full Type In
     * [Portfolio](Collection/Portfolio.md)
     * [Premises](Collection/Premises.md)
     * [PV_Array](Collection/PV_Array.md)
+    * [RealEstate](Collection/RealEstate.md)
     * [System](Collection/System/System.md)
 * [Event](Event/Event.md)
     * [ElevatorTrip](Event/ElevatorTrip.md)
diff --git a/Ontology/DTDLv2/RealEstateCore/Collection/RealEstate.json b/Ontology/DTDLv2/RealEstateCore/Collection/RealEstate.json
new file mode 100644
index 000000000..5b70116f6
--- /dev/null
+++ b/Ontology/DTDLv2/RealEstateCore/Collection/RealEstate.json
@@ -0,0 +1,25 @@
+{
+  "@id": "dtmi:org:w3id:rec:RealEstate;1",
+  "@type": "Interface",
+  "contents": [
+    {
+      "@type": "Relationship",
+      "displayName": {
+        "en": "includes"
+      },
+      "name": "includes",
+      "target": "dtmi:org:w3id:rec:Architecture;1",
+      "writable": true
+    }
+  ],
+  "description": {
+    "en": "The legal/administrative representation of some lands and/or buildings. I.e., \"Fastighet\" (Swedish), \"Ejendom\" (Denmark), etc."
+  },
+  "displayName": {
+    "en": "Real Estate"
+  },
+  "extends": "dtmi:org:w3id:rec:Collection;1",
+  "@context": [
+    "dtmi:dtdl:context;2"
+  ]
+}
\ No newline at end of file
diff --git a/Ontology/SHACL/RealEstateCore/rec.ttl b/Ontology/SHACL/RealEstateCore/rec.ttl
index 808a4a459..7a3fffcd3 100644
--- a/Ontology/SHACL/RealEstateCore/rec.ttl
+++ b/Ontology/SHACL/RealEstateCore/rec.ttl
@@ -1527,6 +1527,21 @@ rec:RadiologyRoom
   rdfs:label "Radiology room" ;
   rdfs:subClassOf rec:HealthcareRoom ;
 .
+rec:RealEstate
+  a rdfs:Class ;
+  a sh:NodeShape ;
+  rdfs:comment "The legal/administrative representation of some lands and/or buildings. I.e., \"Fastighet\" (Swedish), \"Ejendom\" (Denmark), etc." ;
+  rdfs:label "Real Estate" ;
+  rdfs:subClassOf rec:Collection ;
+  sh:property [
+      a sh:PropertyShape ;
+      sh:path rec:includes ;
+      sh:class rec:Architecture ;
+      sh:minCount 1 ;
+      sh:name "includes" ;
+      sh:nodeKind sh:IRI ;
+    ] ;
+.
 rec:Reception
   a rdfs:Class ;
   a sh:NodeShape ;