diff --git a/src/auth/index.ts b/src/auth/index.ts
index 44cffd00..dd6f1ffb 100755
--- a/src/auth/index.ts
+++ b/src/auth/index.ts
@@ -3,7 +3,15 @@ export { Authorizer } from './authorizer'
 export { AuthGroupName } from './authGroup'
 export type { AuthGroup } from './authGroup'
 
-export type { User, UserPrefs, UserProps, UserPrefSurveys, UserInvitation } from './user'
+export type {
+  User,
+  UserAuthGroup,
+  UserAuthGroupProps,
+  UserPrefs,
+  UserProps,
+  UserPrefSurveys,
+  UserInvitation,
+} from './user'
 export type { UserService } from './userService'
 
 export { UserStatus, UserTitle } from './user'
diff --git a/src/auth/user.ts b/src/auth/user.ts
index 8fb901e6..6f547e54 100755
--- a/src/auth/user.ts
+++ b/src/auth/user.ts
@@ -31,8 +31,16 @@ export interface UserInvitation {
   expired: boolean
 }
 
+export interface UserAuthGroupProps {
+  extra: Dictionary<any>
+}
+
+export interface UserAuthGroup extends AuthGroup {
+  props: UserAuthGroupProps
+}
+
 export interface User extends ArenaObject<UserProps> {
-  authGroups?: AuthGroup[]
+  authGroups?: UserAuthGroup[]
   email: string
   hasProfilePicture: boolean
   name: string
diff --git a/src/auth/users.ts b/src/auth/users.ts
index 97cb7e7c..49dc5591 100755
--- a/src/auth/users.ts
+++ b/src/auth/users.ts
@@ -1,23 +1,33 @@
-import { User } from './user'
-import { AuthGroup } from './authGroup'
+import { User, UserAuthGroup } from './user'
 import { AuthGroups } from './authGroups'
+import { Dictionary } from '../common'
 
-const getAuthGroups = (user: User): AuthGroup[] => user?.authGroups ?? []
+const getAuthGroups = (user: User): UserAuthGroup[] => user?.authGroups ?? []
 
 const isSystemAdmin = (user: User): boolean => (getAuthGroups(user) ?? []).some(AuthGroups.isSystemAdmin)
 
 const getAuthGroupBySurveyUuid =
   (surveyUuid?: string, includeSystemAdmin = true) =>
-  (user: User): AuthGroup | undefined => {
+  (user: User): UserAuthGroup | undefined => {
     const authGroups = getAuthGroups(user)
-    if (includeSystemAdmin && isSystemAdmin(user) && authGroups) {
-      return authGroups[0]
-    }
+    if (!authGroups) return undefined
+    return includeSystemAdmin && isSystemAdmin(user)
+      ? authGroups[0]
+      : authGroups.find((authGroup) => authGroup.surveyUuid === surveyUuid)
+  }
 
-    return authGroups?.find((authGroup) => authGroup?.surveyUuid === surveyUuid)
+const getCombinedExtraProps =
+  (surveyUuid: string) =>
+  (user: User): Dictionary<any> => {
+    const userSurveyAuthGroup = user ? Users.getAuthGroupBySurveyUuid(surveyUuid)(user) : null
+    const userAuthGroupExtraProps = userSurveyAuthGroup?.props?.extra ?? {}
+    const userExtraProps = user?.props.extra ?? {}
+    // user auth group extra props overwrite user extra props
+    return { ...userExtraProps, ...userAuthGroupExtraProps }
   }
 
 export const Users = {
   isSystemAdmin,
   getAuthGroupBySurveyUuid,
+  getCombinedExtraProps,
 }
diff --git a/src/index.ts b/src/index.ts
index 411da6c2..9e104e79 100755
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,7 +1,16 @@
 export type { AppInfo } from './app'
 
 export { Authorizer, AuthGroupName, UserStatus, Permission, UserTitle, UserFactory, Users } from './auth'
-export type { User, UserPrefs, UserPrefSurveys, UserProps, AuthGroup, UserService } from './auth'
+export type {
+  User,
+  UserAuthGroup,
+  UserAuthGroupProps,
+  UserPrefs,
+  UserPrefSurveys,
+  UserProps,
+  AuthGroup,
+  UserService,
+} from './auth'
 
 export { CategoryFactory, CategoryImportColumnType, CategoryItemFactory, CategoryLevelFactory } from './category'
 export type {
diff --git a/src/nodeDefExpressionEvaluator/functions.ts b/src/nodeDefExpressionEvaluator/functions.ts
index 28379f4b..6c67992b 100755
--- a/src/nodeDefExpressionEvaluator/functions.ts
+++ b/src/nodeDefExpressionEvaluator/functions.ts
@@ -8,6 +8,7 @@ import { Dates } from '../utils/dates'
 import { NodeDefExpressionContext } from './context'
 import { SystemError } from '../error'
 import { ExtraProps } from '../extraProp/extraProps'
+import { Users } from '../auth'
 
 const sampleGeoJsonPolygon = {
   type: 'Feature',
@@ -174,6 +175,12 @@ export const nodeDefExpressionFunctions: ExpressionFunctions<NodeDefExpressionCo
   userProp: {
     minArity: 1,
     maxArity: 1,
-    executor: (context: NodeDefExpressionContext) => (propName: string) => context.user?.props.extra?.[propName],
+    executor: (context: NodeDefExpressionContext) => (propName: string) => {
+      const { user, survey } = context
+      if (!survey || !user) return undefined
+      const { uuid: surveyUuid } = survey
+      const combinedExtraProps = Users.getCombinedExtraProps(surveyUuid)(user)
+      return combinedExtraProps[propName]
+    },
   },
 }