diff --git a/packages/frontend-2/components/viewer/filters/Panel.vue b/packages/frontend-2/components/viewer/filters/Panel.vue
index df96326e3..34d5b8fd5 100644
--- a/packages/frontend-2/components/viewer/filters/Panel.vue
+++ b/packages/frontend-2/components/viewer/filters/Panel.vue
@@ -87,9 +87,11 @@
 
 <script setup lang="ts">
 import { useInjectedViewerInterfaceState } from '~~/lib/viewer/composables/setup'
-import type { PropertySelectOption } from '~/lib/viewer/helpers/filters/types'
+import type {
+  PropertySelectOption,
+  ExtendedPropertyInfo
+} from '~/lib/viewer/helpers/filters/types'
 import { FilterType } from '~/lib/viewer/helpers/filters/types'
-import type { PropertyInfo } from '@speckle/viewer'
 import { useMixpanel } from '~~/lib/core/composables/mp'
 import { X, Plus } from 'lucide-vue-next'
 import { FormButton } from '@speckle/ui-components'
@@ -120,7 +122,8 @@ const filtersContainerRef = ref<HTMLElement>()
 const shouldScrollToNewFilter = ref(false)
 
 const showLargePropertyWarning = ref(false)
-const pendingProperty = ref<Nullable<{ property: PropertyInfo; count: number }>>(null)
+const pendingProperty =
+  ref<Nullable<{ property: ExtendedPropertyInfo; count: number }>>(null)
 
 const propertySelectOptions = computed((): PropertySelectOption[] => {
   if (!showPropertySelection.value) {
@@ -234,7 +237,10 @@ const selectProperty = async (propertyKey: string) => {
   processPropertySelection(property, propertyKey)
 }
 
-const processPropertySelection = (property: PropertyInfo, propertyKey: string) => {
+const processPropertySelection = (
+  property: ExtendedPropertyInfo,
+  propertyKey: string
+) => {
   if (swappingFilterId.value) {
     updateFilterProperty(swappingFilterId.value, property)
     mp.track('Viewer Action', {
diff --git a/packages/frontend-2/components/viewer/selection/KeyValuePair.vue b/packages/frontend-2/components/viewer/selection/KeyValuePair.vue
index 2c965b2ef..faa6d4d18 100644
--- a/packages/frontend-2/components/viewer/selection/KeyValuePair.vue
+++ b/packages/frontend-2/components/viewer/selection/KeyValuePair.vue
@@ -76,8 +76,10 @@ import { useFilterUtilities } from '~/lib/viewer/composables/filtering/filtering
 import { useInjectedViewerState } from '~~/lib/viewer/composables/setup'
 import type { KeyValuePair } from '~/components/viewer/selection/types'
 import { isNumericPropertyInfo } from '~/lib/viewer/helpers/sceneExplorer'
-import type { PropertyInfo } from '@speckle/viewer'
-import { BooleanFilterCondition } from '~/lib/viewer/helpers/filters/types'
+import {
+  BooleanFilterCondition,
+  type ExtendedPropertyInfo
+} from '~/lib/viewer/helpers/filters/types'
 import { isBooleanProperty } from '~/lib/viewer/helpers/filters/utils'
 
 const props = defineProps<{
@@ -103,13 +105,13 @@ const {
 } = useInjectedViewerState()
 
 const availableFilters = computed(
-  () => getPropertyOptionsFromDataStore() as PropertyInfo[]
+  () => getPropertyOptionsFromDataStore() as ExtendedPropertyInfo[]
 )
 
 const showActionsMenu = ref(false)
 
 const showLargePropertyWarning = ref(false)
-const pendingFilter = ref<PropertyInfo | null>(null)
+const pendingFilter = ref<ExtendedPropertyInfo | null>(null)
 const pendingFilterCount = ref(0)
 
 const isUrlString = (v: unknown) => typeof v === 'string' && VALID_HTTP_URL.test(v)
@@ -152,7 +154,7 @@ const handleAddToFilters = (kvp: KeyValuePair) => {
   }
 }
 
-const addFilterWithValue = (filter: PropertyInfo, kvp: KeyValuePair) => {
+const addFilterWithValue = (filter: ExtendedPropertyInfo, kvp: KeyValuePair) => {
   const filterId = addActiveFilter(filter)
 
   if (isNumericPropertyInfo(filter)) {
diff --git a/packages/frontend-2/lib/viewer/composables/filtering/filtering.ts b/packages/frontend-2/lib/viewer/composables/filtering/filtering.ts
index a03b25d9f..ed3160b07 100644
--- a/packages/frontend-2/lib/viewer/composables/filtering/filtering.ts
+++ b/packages/frontend-2/lib/viewer/composables/filtering/filtering.ts
@@ -1,8 +1,4 @@
-import type {
-  PropertyInfo,
-  NumericPropertyInfo,
-  StringPropertyInfo
-} from '@speckle/viewer'
+import type { NumericPropertyInfo, StringPropertyInfo } from '@speckle/viewer'
 import { difference, uniq, partition } from 'lodash-es'
 import { whenever } from '@vueuse/core'
 import {
@@ -28,7 +24,8 @@ import {
   BooleanFilterCondition,
   SortMode,
   type DataSlice,
-  type QueryCriteria
+  type QueryCriteria,
+  type ExtendedPropertyInfo
 } from '~/lib/viewer/helpers/filters/types'
 import { getConditionLabel } from '~/lib/viewer/helpers/filters/constants'
 import { useFilteringDataStore } from '~/lib/viewer/composables/filtering/dataStore'
@@ -128,11 +125,16 @@ export function useFilterUtilities(
   /**
    * Gets available values for the current property filter (used for UI display)
    */
-  const getAvailableFilterValues = (filter: PropertyInfo, limit?: number): string[] => {
+  const getAvailableFilterValues = (
+    filter: ExtendedPropertyInfo,
+    limit?: number
+  ): string[] => {
     // Type guard to check if filter has valueGroups property
     const hasValueGroups = (
-      f: PropertyInfo
-    ): f is PropertyInfo & { valueGroups: Array<{ value: string | number }> } => {
+      f: ExtendedPropertyInfo
+    ): f is ExtendedPropertyInfo & {
+      valueGroups: Array<{ value: string | number }>
+    } => {
       return (
         'valueGroups' in f && Array.isArray((f as Record<string, unknown>).valueGroups)
       )
@@ -187,7 +189,7 @@ export function useFilterUtilities(
    */
   const computeFullPropertyData = (
     propertyKey: string
-  ): PropertyInfo | BooleanPropertyInfo | null => {
+  ): ExtendedPropertyInfo | null => {
     const valueToObjectIds = new Map<string, string[]>()
 
     for (const dataSource of dataStore.dataSources.value) {
@@ -273,7 +275,7 @@ export function useFilterUtilities(
   }
 
   const isBooleanPropertyInfo = (
-    prop: PropertyInfo | BooleanPropertyInfo
+    prop: ExtendedPropertyInfo
   ): prop is BooleanPropertyInfo => {
     return prop.type === 'boolean'
   }
@@ -345,7 +347,7 @@ export function useFilterUtilities(
     }
   }
 
-  const addActiveFilter = (filter: PropertyInfo): string => {
+  const addActiveFilter = (filter: ExtendedPropertyInfo): string => {
     const existingIndex = filters.propertyFilters.value.findIndex(
       (f) => f.filter?.key === filter.key
     )
@@ -368,7 +370,7 @@ export function useFilterUtilities(
    */
   const updateFilterProperty = (
     filterId: string,
-    newProperty: PropertyInfo
+    newProperty: ExtendedPropertyInfo
   ): boolean => {
     const filterIndex = filters.propertyFilters.value.findIndex(
       (f) => f.id === filterId
@@ -708,7 +710,7 @@ export function useFilterUtilities(
 
     resetFilters() // Clear existing filters first
 
-    const availableProperties = getPropertyOptionsFromDataStore() as PropertyInfo[]
+    const availableProperties = getPropertyOptionsFromDataStore()
 
     // If data store is ready, restore immediately
     if (availableProperties.length > 0) {
@@ -730,7 +732,7 @@ export function useFilterUtilities(
       id: string
       condition: 'AND' | 'OR'
     }>,
-    availableProperties: PropertyInfo[]
+    availableProperties: ExtendedPropertyInfo[]
   ) => {
     for (const serializedFilter of serializedFilters) {
       if (serializedFilter.key) {
@@ -756,9 +758,9 @@ export function useFilterUtilities(
    * Filters the available filters to only include relevant ones for the filter UI
    */
   const getRelevantFilters = (
-    allFilters: PropertyInfo[] | null | undefined
-  ): PropertyInfo[] => {
-    return (allFilters || []).filter((f: PropertyInfo) => {
+    allFilters: ExtendedPropertyInfo[] | null | undefined
+  ): ExtendedPropertyInfo[] => {
+    return (allFilters || []).filter((f: ExtendedPropertyInfo) => {
       if (shouldExcludeFromFiltering(f.key)) {
         return false
       }
@@ -770,10 +772,10 @@ export function useFilterUtilities(
    * Gets property options from the data store (optimized to use propertyMap)
    */
   const getPropertyOptionsFromDataStore = (): (
-    | PropertyInfo
+    | ExtendedPropertyInfo
     | BooleanPropertyInfo
   )[] => {
-    const allProperties = new Map<string, PropertyInfo | BooleanPropertyInfo>()
+    const allProperties = new Map<string, ExtendedPropertyInfo | BooleanPropertyInfo>()
 
     for (const dataSource of dataStore.dataSources.value) {
       const propertyKeys = Object.keys(dataSource.propertyMap)
@@ -825,7 +827,7 @@ export function useFilterUtilities(
    * Gets filtered and sorted values for a string filter with search and sorting options
    */
   const getFilteredFilterValues = (
-    filter: PropertyInfo,
+    filter: ExtendedPropertyInfo,
     options?: {
       searchQuery?: string
       sortMode?: SortMode
@@ -866,7 +868,8 @@ export function useFilterUtilities(
 
   whenever(shouldRestoreFilters, () => {
     if (pendingFiltersToRestore.value) {
-      const availableProperties = getPropertyOptionsFromDataStore() as PropertyInfo[]
+      const availableProperties =
+        getPropertyOptionsFromDataStore() as ExtendedPropertyInfo[]
       applyFiltersFromSerialized(pendingFiltersToRestore.value, availableProperties)
       pendingFiltersToRestore.value = null
     }
diff --git a/packages/frontend-2/lib/viewer/helpers/filters/types.ts b/packages/frontend-2/lib/viewer/helpers/filters/types.ts
index 11e907c2b..9c28394f5 100644
--- a/packages/frontend-2/lib/viewer/helpers/filters/types.ts
+++ b/packages/frontend-2/lib/viewer/helpers/filters/types.ts
@@ -77,10 +77,16 @@ export type StringFilterData = BaseFilterData & {
   isDefaultAllSelected?: boolean
 }
 
-export type BooleanPropertyInfo = Omit<PropertyInfo, 'type'> & {
-  type: 'boolean'
-  valueGroups: { value: boolean; ids: string[] }[]
-}
+export type ExtendedPropertyInfo =
+  | PropertyInfo
+  | {
+      key: string
+      objectCount: number
+      type: 'boolean'
+      valueGroups: { value: boolean; ids: string[] }[]
+    }
+
+export type BooleanPropertyInfo = Extract<ExtendedPropertyInfo, { type: 'boolean' }>
 
 export type BooleanFilterData = BaseFilterData & {
   type: FilterType.Boolean
@@ -128,7 +134,7 @@ export type PropertySelectionListItem = {
 }
 
 export type CreateFilterParams = {
-  filter: PropertyInfo
+  filter: ExtendedPropertyInfo
   id: string
   availableValues?: string[]
 }
diff --git a/packages/frontend-2/lib/viewer/helpers/filters/utils.ts b/packages/frontend-2/lib/viewer/helpers/filters/utils.ts
index 702f37c1d..3df14694a 100644
--- a/packages/frontend-2/lib/viewer/helpers/filters/utils.ts
+++ b/packages/frontend-2/lib/viewer/helpers/filters/utils.ts
@@ -1,6 +1,9 @@
-import type { PropertyInfo } from '@speckle/viewer'
 import { isStringPropertyInfo } from '~/lib/viewer/helpers/sceneExplorer'
-import { ExistenceFilterCondition } from './types'
+import {
+  ExistenceFilterCondition,
+  type BooleanPropertyInfo,
+  type ExtendedPropertyInfo
+} from '~/lib/viewer/helpers/filters/types'
 
 export const revitPropertyRegex = /^parameters\./
 export const revitPropertyRegexDui3000InstanceProps = /^properties\.Instance/
@@ -59,7 +62,7 @@ export const shouldExcludeFromFiltering = (key: string): boolean => {
  */
 export const getPropertyName = (
   key: string,
-  availableFilters?: PropertyInfo[] | null
+  availableFilters?: ExtendedPropertyInfo[] | null
 ): string => {
   if (!key) return 'Loading'
 
@@ -68,7 +71,7 @@ export const getPropertyName = (
 
   if (isRevitProperty(key) && key.endsWith('.value')) {
     const correspondingProperty = (availableFilters || []).find(
-      (f: PropertyInfo) => f.key === key.replace('.value', '.name')
+      (f: ExtendedPropertyInfo) => f.key === key.replace('.value', '.name')
     )
     if (correspondingProperty && isStringPropertyInfo(correspondingProperty)) {
       return correspondingProperty.valueGroups[0]?.value || key.split('.').pop() || key
@@ -83,8 +86,8 @@ export const getPropertyName = (
  */
 export const findFilterByDisplayName = (
   displayKey: string,
-  availableFilters: PropertyInfo[] | null | undefined
-): PropertyInfo | undefined => {
+  availableFilters: ExtendedPropertyInfo[] | null | undefined
+): ExtendedPropertyInfo | undefined => {
   if (!availableFilters) return undefined
 
   // First, try to find an exact display name match
@@ -107,7 +110,7 @@ export const findFilterByDisplayName = (
  */
 export const isKvpFilterable = (
   kvp: { key: string; backendPath?: string },
-  availableFilters: PropertyInfo[] | null | undefined
+  availableFilters: ExtendedPropertyInfo[] | null | undefined
 ): boolean => {
   // Use backendPath for legacy compatibility, but prefer the direct key
   const propertyKey = kvp.backendPath || kvp.key
@@ -132,7 +135,7 @@ export const isKvpFilterable = (
  */
 export const getFilterDisabledReason = (
   kvp: { key: string; backendPath?: string },
-  availableFilters: PropertyInfo[] | null | undefined
+  availableFilters: ExtendedPropertyInfo[] | null | undefined
 ): string => {
   const availableKeys = availableFilters?.map((f) => f.key) || []
 
@@ -187,20 +190,22 @@ export const getFilterDisabledReason = (
  */
 export const findFilterByKvp = (
   kvp: { key: string; backendPath?: string },
-  availableFilters: PropertyInfo[] | null | undefined
-): PropertyInfo | undefined => {
+  availableFilters: ExtendedPropertyInfo[] | null | undefined
+): ExtendedPropertyInfo | undefined => {
   if (!availableFilters) return undefined
 
   if (kvp.backendPath) {
     const exactMatch = availableFilters.find(
-      (f: PropertyInfo) => f.key === kvp.backendPath
+      (f: ExtendedPropertyInfo) => f.key === kvp.backendPath
     )
     if (exactMatch) {
       return exactMatch
     }
   }
 
-  const directMatch = availableFilters.find((f: PropertyInfo) => f.key === kvp.key)
+  const directMatch = availableFilters.find(
+    (f: ExtendedPropertyInfo) => f.key === kvp.key
+  )
   if (directMatch) {
     return directMatch
   }
@@ -208,7 +213,7 @@ export const findFilterByKvp = (
   // If we have a backendPath but no exact match, try partial matching
   if (kvp.backendPath) {
     const pathParts = kvp.backendPath.split('.')
-    const partialMatches = availableFilters.filter((f: PropertyInfo) => {
+    const partialMatches = availableFilters.filter((f: ExtendedPropertyInfo) => {
       const filterParts = f.key.split('.')
 
       if (pathParts.length === 1) {
@@ -241,14 +246,17 @@ export const findFilterByKvp = (
   return findFilterByDisplayName(displayKey, availableFilters)
 }
 
-export const isBooleanProperty = (filter: PropertyInfo): boolean => {
+export const isBooleanProperty = (filter: ExtendedPropertyInfo): boolean => {
   return 'type' in filter && (filter as { type: string }).type === 'boolean'
 }
 
 /**
  * Get count for a specific filter value
  */
-export function getFilterValueCount(filter: PropertyInfo, value: string): number {
+export function getFilterValueCount(
+  filter: ExtendedPropertyInfo,
+  value: string
+): number {
   if (!('valueGroups' in filter) || !Array.isArray(filter.valueGroups)) {
     return 0
   }
@@ -268,7 +276,7 @@ export function getFilterValueCount(filter: PropertyInfo, value: string): number
  * Get count for existence filters (objects that have/don't have a property set)
  */
 export function getExistenceFilterCount(
-  filter: PropertyInfo,
+  filter: ExtendedPropertyInfo | BooleanPropertyInfo,
   condition: ExistenceFilterCondition,
   totalObjectCount?: number
 ): number {
diff --git a/packages/frontend-2/lib/viewer/helpers/sceneExplorer.ts b/packages/frontend-2/lib/viewer/helpers/sceneExplorer.ts
index 7de02e7f0..1d801b3d2 100644
--- a/packages/frontend-2/lib/viewer/helpers/sceneExplorer.ts
+++ b/packages/frontend-2/lib/viewer/helpers/sceneExplorer.ts
@@ -1,18 +1,18 @@
 import type { MaybeNullOrUndefined } from '@speckle/shared'
 import type {
   NumericPropertyInfo,
-  PropertyInfo,
   SpeckleObject,
   SpeckleReference,
   StringPropertyInfo
 } from '@speckle/viewer'
 import type { Raw } from 'vue'
+import type { ExtendedPropertyInfo } from '~/lib/viewer/helpers/filters/types'
 
 export const isStringPropertyInfo = (
-  info: MaybeNullOrUndefined<PropertyInfo>
+  info: MaybeNullOrUndefined<ExtendedPropertyInfo>
 ): info is StringPropertyInfo => info?.type === 'string'
 export const isNumericPropertyInfo = (
-  info: MaybeNullOrUndefined<PropertyInfo>
+  info: MaybeNullOrUndefined<ExtendedPropertyInfo>
 ): info is NumericPropertyInfo => info?.type === 'number'
 
 export type ExplorerNode = {