diff --git a/docs/object-model-schema.json b/docs/object-model-schema.json
index b72a9651..82bd1c0f 100644
--- a/docs/object-model-schema.json
+++ b/docs/object-model-schema.json
@@ -1,6 +1,6 @@
 {
   "VimFormatVersion": "1.0.0",
-  "SchemaVersion": "5.4.0",
+  "SchemaVersion": "5.5.0",
   "Tables": {
     "Vim.Area": [
       "byte:IsGrossInterior",
@@ -245,6 +245,7 @@
     ],
     "Vim.Level": [
       "double:Elevation",
+      "double:ProjectElevation",
       "index:Vim.Building:Building",
       "index:Vim.Element:Element",
       "index:Vim.FamilyType:FamilyType"
diff --git a/docs/schema-diff.json b/docs/schema-diff.json
index 6f4b52f7..bdf56647 100644
--- a/docs/schema-diff.json
+++ b/docs/schema-diff.json
@@ -155,5 +155,10 @@
     "Added": [
       "Vim.FamilyInstance__index:Vim.Element:SuperComponent"
     ]
+  },
+  "5.4.0 to 5.5.0": {
+    "Added": [
+      "Vim.Level__double:ProjectElevation"
+    ]
   }
 }
\ No newline at end of file
diff --git a/src/cpp/vim/object-model.h b/src/cpp/vim/object-model.h
index 128d44a8..2b2bedeb 100644
--- a/src/cpp/vim/object-model.h
+++ b/src/cpp/vim/object-model.h
@@ -2514,6 +2514,7 @@ namespace Vim
     public:
         int mIndex;
         double mElevation;
+        double mProjectElevation;
         
         int mFamilyTypeIndex;
         FamilyType* mFamilyType;
@@ -2543,6 +2544,7 @@ namespace Vim
             Level* level = new Level();
             level->mIndex = levelIndex;
             level->mElevation = GetElevation(levelIndex);
+            level->mProjectElevation = GetProjectElevation(levelIndex);
             level->mFamilyTypeIndex = GetFamilyTypeIndex(levelIndex);
             level->mBuildingIndex = GetBuildingIndex(levelIndex);
             level->mElementIndex = GetElementIndex(levelIndex);
@@ -2552,6 +2554,7 @@ namespace Vim
         std::vector<Level>* GetAll()
         {
             bool existsElevation = mEntityTable.column_exists("double:Elevation");
+            bool existsProjectElevation = mEntityTable.column_exists("double:ProjectElevation");
             bool existsFamilyType = mEntityTable.column_exists("index:Vim.FamilyType:FamilyType");
             bool existsBuilding = mEntityTable.column_exists("index:Vim.Building:Building");
             bool existsElement = mEntityTable.column_exists("index:Vim.Element:Element");
@@ -2566,6 +2569,11 @@ namespace Vim
                 memcpy(elevationData, mEntityTable.mDataColumns["double:Elevation"].begin(), count * sizeof(double));
             }
             
+            double* projectElevationData = new double[count];
+            if (mEntityTable.column_exists("double:ProjectElevation")) {
+                memcpy(projectElevationData, mEntityTable.mDataColumns["double:ProjectElevation"].begin(), count * sizeof(double));
+            }
+            
             const std::vector<int>& familyTypeData = mEntityTable.column_exists("index:Vim.FamilyType:FamilyType") ? mEntityTable.mIndexColumns["index:Vim.FamilyType:FamilyType"] : std::vector<int>();
             const std::vector<int>& buildingData = mEntityTable.column_exists("index:Vim.Building:Building") ? mEntityTable.mIndexColumns["index:Vim.Building:Building"] : std::vector<int>();
             const std::vector<int>& elementData = mEntityTable.column_exists("index:Vim.Element:Element") ? mEntityTable.mIndexColumns["index:Vim.Element:Element"] : std::vector<int>();
@@ -2576,6 +2584,8 @@ namespace Vim
                 entity.mIndex = i;
                 if (existsElevation)
                     entity.mElevation = elevationData[i];
+                if (existsProjectElevation)
+                    entity.mProjectElevation = projectElevationData[i];
                 entity.mFamilyTypeIndex = existsFamilyType ? familyTypeData[i] : -1;
                 entity.mBuildingIndex = existsBuilding ? buildingData[i] : -1;
                 entity.mElementIndex = existsElement ? elementData[i] : -1;
@@ -2583,6 +2593,7 @@ namespace Vim
             }
             
             delete[] elevationData;
+            delete[] projectElevationData;
             
             return level;
         }
@@ -2615,6 +2626,34 @@ namespace Vim
             return result;
         }
         
+        double GetProjectElevation(int levelIndex)
+        {
+            if (levelIndex < 0 || levelIndex >= GetCount())
+                return {};
+            
+            if (mEntityTable.column_exists("double:ProjectElevation")) {
+                return *reinterpret_cast<double*>(const_cast<bfast::byte*>(mEntityTable.mDataColumns["double:ProjectElevation"].begin() + levelIndex * sizeof(double)));
+            }
+            
+            return {};
+        }
+        
+        std::vector<double>* GetAllProjectElevation()
+        {
+            const auto count = GetCount();
+            
+            double* projectElevationData = new double[count];
+            if (mEntityTable.column_exists("double:ProjectElevation")) {
+                memcpy(projectElevationData, mEntityTable.mDataColumns["double:ProjectElevation"].begin(), count * sizeof(double));
+            }
+            
+            std::vector<double>* result = new std::vector<double>(projectElevationData, projectElevationData + count);
+            
+            delete[] projectElevationData;
+            
+            return result;
+        }
+        
         int GetFamilyTypeIndex(int levelIndex)
         {
             if (!mEntityTable.column_exists("index:Vim.FamilyType:FamilyType")) {
diff --git a/src/cs/samples/Vim.JsonDigest/LevelDigest.cs b/src/cs/samples/Vim.JsonDigest/LevelDigest.cs
index ac28783c..f90ff2ae 100644
--- a/src/cs/samples/Vim.JsonDigest/LevelDigest.cs
+++ b/src/cs/samples/Vim.JsonDigest/LevelDigest.cs
@@ -41,6 +41,11 @@ public class LevelDigest
         /// </summary>
         public double Elevation { get; set; }
 
+        /// <summary>
+        /// Level project elevation.
+        /// </summary>
+        public double ProjectElevation { get; set; }
+
         /// <summary>
         /// JSON Constructor.
         /// </summary>
@@ -64,6 +69,7 @@ public static IEnumerable<LevelDigest> GetLevelDigestCollection(VimScene vimScen
                     Name = levelElement.Name,
                     BimDocumentName = levelElement.BimDocument.Name,
                     Elevation = l.Elevation,
+                    ProjectElevation = l.ProjectElevation,
                 };
             }).ToEnumerable();
     }
diff --git a/src/cs/vim/Vim.Format/ObjectModel/ObjectModel.cs b/src/cs/vim/Vim.Format/ObjectModel/ObjectModel.cs
index 05378e2c..9b78cd85 100644
--- a/src/cs/vim/Vim.Format/ObjectModel/ObjectModel.cs
+++ b/src/cs/vim/Vim.Format/ObjectModel/ObjectModel.cs
@@ -14,6 +14,10 @@ public static class SchemaVersion
         // ReSharper disable MemberHidesStaticFromOuterClass
         public static class History
         {
+            // Schema additions
+            //   Vim.Level__double:ProjectElevation
+            public const string v5_5_0 = "5.5.0";
+
             // Schema additions
             //   Vim.FamilyInstance__index:Vim.Element:SuperComponent
             public const string v5_4_0 = "5.4.0";
@@ -167,7 +171,8 @@ public static class History
         // ReSharper enable MemberHidesStaticFromOuterClass
 
         // [MAINTAIN] Add more object model SerializableVersions below and update the current one.
-        public static SerializableVersion Current => v5_4_0;
+        public static SerializableVersion Current => v5_5_0;
+        public static SerializableVersion v5_5_0 => SerializableVersion.Parse(History.v5_5_0);
         public static SerializableVersion v5_4_0 => SerializableVersion.Parse(History.v5_4_0);
         public static SerializableVersion v5_3_0 => SerializableVersion.Parse(History.v5_3_0);
         public static SerializableVersion v5_2_0 => SerializableVersion.Parse(History.v5_2_0);
@@ -582,9 +587,18 @@ public partial class Level : EntityWithElement
     {
         /// <summary>
         /// The elevation above or below the ground level.
+        /// - Revit: maps to Level.Elevation
+        /// - IFC: maps to IfcBuildingStorey.Elevation
         /// </summary>
         public double Elevation;
 
+        /// <summary>
+        /// The elevation relative to the project origin.
+        /// - Revit: maps to Level.ProjectElevation
+        /// - IFC: maps to IfcBuildingStorey.Elevation + IfcBuilding.ElevationOfRefHeight
+        /// </summary>
+        public double ProjectElevation;
+
         /// <summary>
         /// The associated Level's FamilyType (in Revit, this maps to its LevelType)
         /// </summary>
@@ -1732,9 +1746,24 @@ public partial class Site : EntityWithElement
     [TableName(TableNames.Building)]
     public partial class Building : EntityWithElement
     {
+        /// <summary>
+        /// Revit: maps to Document.SiteLocation.Elevation
+        /// IFC: maps to IfcBuilding.ElevationOfRefHeight
+        /// </summary>
         public double Elevation;
+
+        /// <summary>
+        /// Revit: maps to Document.SiteLocation.Elevation
+        /// IFC: maps to IfcBuilding.ElevationOfTerrain
+        /// </summary>
         public double TerrainElevation;
+
+        /// <summary>
+        /// Revit: maps to Document.ProjectInformation.Address
+        /// IFC: maps to IfcBuilding.BuildingAddress
+        /// </summary>
         public string Address;
+
         public Relation<Site> _Site;
     }
 
diff --git a/src/cs/vim/Vim.Format/ObjectModel/ObjectModelGenerated.cs b/src/cs/vim/Vim.Format/ObjectModel/ObjectModelGenerated.cs
index d45efcb3..c9d04f0c 100644
--- a/src/cs/vim/Vim.Format/ObjectModel/ObjectModelGenerated.cs
+++ b/src/cs/vim/Vim.Format/ObjectModel/ObjectModelGenerated.cs
@@ -348,6 +348,7 @@ public override bool FieldsAreEqual(object obj)
                 var fieldsAreEqual =
                     (Index == other.Index) &&
                     (Elevation == other.Elevation) &&
+                    (ProjectElevation == other.ProjectElevation) &&
                     (_FamilyType?.Index == other._FamilyType?.Index) &&
                     (_Building?.Index == other._Building?.Index) &&
                     (_Element?.Index == other._Element?.Index);
@@ -2211,6 +2212,8 @@ public DesignOption GetDesignOption(int n)
         
         public IArray<Double> LevelElevation { get; }
         public Double GetLevelElevation(int index, Double defaultValue = default) => LevelElevation?.ElementAtOrDefault(index, defaultValue) ?? defaultValue;
+        public IArray<Double> LevelProjectElevation { get; }
+        public Double GetLevelProjectElevation(int index, Double defaultValue = default) => LevelProjectElevation?.ElementAtOrDefault(index, defaultValue) ?? defaultValue;
         public IArray<int> LevelFamilyTypeIndex { get; }
         public int GetLevelFamilyTypeIndex(int index) => LevelFamilyTypeIndex?.ElementAtOrDefault(index, EntityRelation.None) ?? EntityRelation.None;
         public IArray<int> LevelBuildingIndex { get; }
@@ -2226,6 +2229,7 @@ public Level GetLevel(int n)
             r.Document = Document;
             r.Index = n;
             r.Elevation = LevelElevation.ElementAtOrDefault(n);
+            r.ProjectElevation = LevelProjectElevation.ElementAtOrDefault(n);
             r._FamilyType = new Relation<Vim.Format.ObjectModel.FamilyType>(GetLevelFamilyTypeIndex(n), GetFamilyType);
             r._Building = new Relation<Vim.Format.ObjectModel.Building>(GetLevelBuildingIndex(n), GetBuilding);
             r._Element = new Relation<Vim.Format.ObjectModel.Element>(GetLevelElementIndex(n), GetElement);
@@ -3950,6 +3954,7 @@ public DocumentModel(Document d, bool inParallel = true)
             GroupPosition_Z = GroupEntityTable?.GetDataColumnValues<Single>("float:Position.Z") ?? Array.Empty<Single>().ToIArray();
             DesignOptionIsPrimary = DesignOptionEntityTable?.GetDataColumnValues<Boolean>("byte:IsPrimary") ?? Array.Empty<Boolean>().ToIArray();
             LevelElevation = LevelEntityTable?.GetDataColumnValues<Double>("double:Elevation") ?? Array.Empty<Double>().ToIArray();
+            LevelProjectElevation = LevelEntityTable?.GetDataColumnValues<Double>("double:ProjectElevation") ?? Array.Empty<Double>().ToIArray();
             RoomBaseOffset = RoomEntityTable?.GetDataColumnValues<Double>("double:BaseOffset") ?? Array.Empty<Double>().ToIArray();
             RoomLimitOffset = RoomEntityTable?.GetDataColumnValues<Double>("double:LimitOffset") ?? Array.Empty<Double>().ToIArray();
             RoomUnboundedHeight = RoomEntityTable?.GetDataColumnValues<Double>("double:UnboundedHeight") ?? Array.Empty<Double>().ToIArray();
@@ -5099,6 +5104,7 @@ public LevelTable(SerializableEntityTable rawTable, string[] stringBuffer, Entit
         {
             _parentTableSet = parentTableSet;
             Column_Elevation = GetDataColumnValues<Double>("double:Elevation") ?? Array.Empty<Double>();
+            Column_ProjectElevation = GetDataColumnValues<Double>("double:ProjectElevation") ?? Array.Empty<Double>();
             Column_FamilyTypeIndex = GetIndexColumnValues("index:Vim.FamilyType:FamilyType") ?? Array.Empty<int>();
             Column_BuildingIndex = GetIndexColumnValues("index:Vim.Building:Building") ?? Array.Empty<int>();
             Column_ElementIndex = GetIndexColumnValues("index:Vim.Element:Element") ?? Array.Empty<int>();
@@ -5106,6 +5112,8 @@ public LevelTable(SerializableEntityTable rawTable, string[] stringBuffer, Entit
         
         public Double[] Column_Elevation { get; }
         public Double GetElevation(int index, Double @default = default) => Column_Elevation.ElementAtOrDefault(index, @default);
+        public Double[] Column_ProjectElevation { get; }
+        public Double GetProjectElevation(int index, Double @default = default) => Column_ProjectElevation.ElementAtOrDefault(index, @default);
         public int[] Column_FamilyTypeIndex { get; }
         public int GetFamilyTypeIndex(int index) => Column_FamilyTypeIndex.ElementAtOrDefault(index, EntityRelation.None);
         public FamilyType GetFamilyType(int index) => _GetReferencedFamilyType(GetFamilyTypeIndex(index));
@@ -5125,6 +5133,7 @@ public Level Get(int index)
             var r = new Level();
             r.Index = index;
             r.Elevation = GetElevation(index);
+            r.ProjectElevation = GetProjectElevation(index);
             r._FamilyType = new Relation<Vim.Format.ObjectModel.FamilyType>(GetFamilyTypeIndex(index), _GetReferencedFamilyType);
             r._Building = new Relation<Vim.Format.ObjectModel.Building>(GetBuildingIndex(index), _GetReferencedBuilding);
             r._Element = new Relation<Vim.Format.ObjectModel.Element>(GetElementIndex(index), _GetReferencedElement);
@@ -7681,6 +7690,7 @@ public static EntityTableBuilder ToLevelTableBuilder(this IEnumerable<Entity> en
             var typedEntities = entities?.Cast<Level>() ?? Enumerable.Empty<Level>();
             var tb = new EntityTableBuilder("Vim.Level");
             tb.AddDataColumn("double:Elevation", typedEntities.Select(x => x.Elevation));
+            tb.AddDataColumn("double:ProjectElevation", typedEntities.Select(x => x.ProjectElevation));
             tb.AddIndexColumn("index:Vim.FamilyType:FamilyType", typedEntities.Select(x => x._FamilyType?.Index ?? EntityRelation.None));
             tb.AddIndexColumn("index:Vim.Building:Building", typedEntities.Select(x => x._Building?.Index ?? EntityRelation.None));
             tb.AddIndexColumn("index:Vim.Element:Element", typedEntities.Select(x => x._Element?.Index ?? EntityRelation.None));
diff --git a/src/ts/src/objectModel.ts b/src/ts/src/objectModel.ts
index 4706160d..3d543168 100644
--- a/src/ts/src/objectModel.ts
+++ b/src/ts/src/objectModel.ts
@@ -1822,6 +1822,7 @@ export class DesignOptionTable implements IDesignOptionTable {
 export interface ILevel {
     index: number
     elevation?: number
+    projectElevation?: number
     
     familyTypeIndex?: number
     familyType?: IFamilyType
@@ -1838,6 +1839,8 @@ export interface ILevelTable {
     
     getElevation(levelIndex: number): Promise<number | undefined>
     getAllElevation(): Promise<number[] | undefined>
+    getProjectElevation(levelIndex: number): Promise<number | undefined>
+    getAllProjectElevation(): Promise<number[] | undefined>
     
     getFamilyTypeIndex(levelIndex: number): Promise<number | undefined>
     getAllFamilyTypeIndex(): Promise<number[] | undefined>
@@ -1853,6 +1856,7 @@ export interface ILevelTable {
 export class Level implements ILevel {
     index: number
     elevation?: number
+    projectElevation?: number
     
     familyTypeIndex?: number
     familyType?: IFamilyType
@@ -1867,6 +1871,7 @@ export class Level implements ILevel {
         
         await Promise.all([
             table.getElevation(index).then(v => result.elevation = v),
+            table.getProjectElevation(index).then(v => result.projectElevation = v),
             table.getFamilyTypeIndex(index).then(v => result.familyTypeIndex = v),
             table.getBuildingIndex(index).then(v => result.buildingIndex = v),
             table.getElementIndex(index).then(v => result.elementIndex = v),
@@ -1906,12 +1911,14 @@ export class LevelTable implements ILevelTable {
         const localTable = await this.entityTable.getLocal()
         
         let elevation: number[] | undefined
+        let projectElevation: number[] | undefined
         let familyTypeIndex: number[] | undefined
         let buildingIndex: number[] | undefined
         let elementIndex: number[] | undefined
         
         await Promise.all([
             (async () => { elevation = (await localTable.getNumberArray("double:Elevation")) })(),
+            (async () => { projectElevation = (await localTable.getNumberArray("double:ProjectElevation")) })(),
             (async () => { familyTypeIndex = (await localTable.getNumberArray("index:Vim.FamilyType:FamilyType")) })(),
             (async () => { buildingIndex = (await localTable.getNumberArray("index:Vim.Building:Building")) })(),
             (async () => { elementIndex = (await localTable.getNumberArray("index:Vim.Element:Element")) })(),
@@ -1924,6 +1931,7 @@ export class LevelTable implements ILevelTable {
             level.push({
                 index: i,
                 elevation: elevation ? elevation[i] : undefined,
+                projectElevation: projectElevation ? projectElevation[i] : undefined,
                 familyTypeIndex: familyTypeIndex ? familyTypeIndex[i] : undefined,
                 buildingIndex: buildingIndex ? buildingIndex[i] : undefined,
                 elementIndex: elementIndex ? elementIndex[i] : undefined
@@ -1941,6 +1949,14 @@ export class LevelTable implements ILevelTable {
         return (await this.entityTable.getNumberArray("double:Elevation"))
     }
     
+    async getProjectElevation(levelIndex: number): Promise<number | undefined> {
+        return (await this.entityTable.getNumber(levelIndex, "double:ProjectElevation"))
+    }
+    
+    async getAllProjectElevation(): Promise<number[] | undefined> {
+        return (await this.entityTable.getNumberArray("double:ProjectElevation"))
+    }
+    
     async getFamilyTypeIndex(levelIndex: number): Promise<number | undefined> {
         return await this.entityTable.getNumber(levelIndex, "index:Vim.FamilyType:FamilyType")
     }