diff --git a/lib/shared/search-utils.js b/lib/shared/search-utils.js
--- a/lib/shared/search-utils.js
+++ b/lib/shared/search-utils.js
@@ -487,6 +487,7 @@
 type UseSearchUsersOptions = {
   +includeViewer?: ?boolean,
   +searchFarcaster?: ?boolean,
+  +skipCommUsers?: ?boolean,
 };
 function useSearchUsers(
   usernameInputText: string,
@@ -494,6 +495,7 @@
 ): $ReadOnlyArray<GlobalAccountUserInfo> {
   const includeViewer = !!options?.includeViewer;
   const searchFarcaster = !!options?.searchFarcaster;
+  const skipCommUsers = !!options?.skipCommUsers;
 
   const currentUserID = useSelector(
     state => state.currentUserInfo && state.currentUserInfo.id,
@@ -534,7 +536,7 @@
       const foundInfos: Array<GlobalAccountUserInfo> = [];
 
       const identityPromise = (async () => {
-        if (identitySearchSocketConnected) {
+        if (identitySearchSocketConnected && !skipCommUsers) {
           try {
             const identitySearchResult = await callIdentitySearchUsers(
               forwardLookupSearchText,
@@ -578,7 +580,7 @@
 
       await Promise.all([identityPromise, farcasterPromise]);
 
-      if (foundInfos.length > 0) {
+      if (foundInfos.length > 0 || skipCommUsers) {
         setSearchResultsFromServer(foundInfos);
         return;
       }
@@ -596,6 +598,7 @@
     forwardLookupSearchText,
     findFarcasterDCUsers,
     searchFarcaster,
+    skipCommUsers,
   ]);
   return searchResults;
 }
diff --git a/native/chat/settings/add-users-modal.react.js b/native/chat/settings/add-users-modal.react.js
--- a/native/chat/settings/add-users-modal.react.js
+++ b/native/chat/settings/add-users-modal.react.js
@@ -12,11 +12,16 @@
 import { useAddDMThreadMembers } from 'lib/shared/dm-ops/dm-op-utils.js';
 import { useModifyFarcasterMembershipInput } from 'lib/shared/farcaster/farcaster-api.js';
 import { useRefreshFarcasterConversation } from 'lib/shared/farcaster/farcaster-hooks.js';
-import { usePotentialMemberItems } from 'lib/shared/search-utils.js';
+import {
+  usePotentialMemberItems,
+  useSearchUsers,
+} from 'lib/shared/search-utils.js';
 import { threadActualMembers } from 'lib/shared/thread-utils.js';
 import { threadSpecs } from 'lib/shared/threads/thread-specs.js';
 import type { ThreadInfo } from 'lib/types/minimally-encoded-thread-permissions-types.js';
+import { farcasterThreadTypeValidator } from 'lib/types/thread-types-enum.js';
 import { type AccountUserInfo } from 'lib/types/user-types.js';
+import { useCurrentUserSupportsDCs } from 'lib/utils/farcaster-utils.js';
 import { useDispatchActionPromise } from 'lib/utils/redux-promise-utils.js';
 
 import Button from '../../components/button.react.js';
@@ -187,6 +192,12 @@
   const communityThreadInfo = useSelector(state =>
     community ? threadInfoSelector(state)[community] : null,
   );
+  const farcasterDCsEnabled = useCurrentUserSupportsDCs();
+  const isFarcasterThread = farcasterThreadTypeValidator.is(threadInfo.type);
+  const searchUsersResult = useSearchUsers(usernameInputText, {
+    searchFarcaster: farcasterDCsEnabled && isFarcasterThread,
+    skipCommUsers: true,
+  });
   const auxUserInfos = useSelector(state => state.auxUserStore.auxUserInfos);
   const userSearchResults = usePotentialMemberItems({
     text: usernameInputText,
@@ -196,6 +207,7 @@
     inputParentThreadInfo: parentThreadInfo,
     inputCommunityThreadInfo: communityThreadInfo,
     threadType: threadInfo.type,
+    includeServerSearchUsers: isFarcasterThread ? searchUsersResult : undefined,
   });
 
   const onChangeTagInput = React.useCallback(
diff --git a/web/settings/relationship/add-users-utils.js b/web/settings/relationship/add-users-utils.js
--- a/web/settings/relationship/add-users-utils.js
+++ b/web/settings/relationship/add-users-utils.js
@@ -14,12 +14,16 @@
 import { threadActualMembers } from 'lib/shared/thread-utils.js';
 import type { ThreadInfo } from 'lib/types/minimally-encoded-thread-permissions-types.js';
 import type { UserRelationshipStatus } from 'lib/types/relationship-types.js';
-import type { ThreadType } from 'lib/types/thread-types-enum.js';
+import {
+  farcasterThreadTypeValidator,
+  type ThreadType,
+} from 'lib/types/thread-types-enum.js';
 import type {
   GlobalAccountUserInfo,
   AccountUserInfo,
   UserListItem,
 } from 'lib/types/user-types.js';
+import { useCurrentUserSupportsDCs } from 'lib/utils/farcaster-utils.js';
 import { values } from 'lib/utils/objects.js';
 
 import { useAddUsersListContext } from './add-users-list-provider.react.js';
@@ -149,6 +153,12 @@
     [previouslySelectedUsers, threadInfo.members, viewerID],
   );
 
+  const farcasterDCsEnabled = useCurrentUserSupportsDCs();
+  const isFarcasterThread = farcasterThreadTypeValidator.is(threadInfo.type);
+  const searchUsersResult = useSearchUsers(searchText, {
+    searchFarcaster: farcasterDCsEnabled && isFarcasterThread,
+    skipCommUsers: true,
+  });
   const auxUserInfos = useSelector(state => state.auxUserStore.auxUserInfos);
   const userSearchResults = usePotentialMemberItems({
     text: searchText,
@@ -158,6 +168,7 @@
     inputParentThreadInfo: parentThreadInfo,
     inputCommunityThreadInfo: communityThreadInfo,
     threadType: threadInfo.type,
+    includeServerSearchUsers: isFarcasterThread ? searchUsersResult : undefined,
   });
 
   const userInfos = React.useMemo(() => {