diff --git a/res/css/views/dialogs/_AddExistingToSpaceDialog.scss b/res/css/views/dialogs/_AddExistingToSpaceDialog.scss
index 444b29c9bf..8b19f506f5 100644
--- a/res/css/views/dialogs/_AddExistingToSpaceDialog.scss
+++ b/res/css/views/dialogs/_AddExistingToSpaceDialog.scss
@@ -75,7 +75,7 @@ limitations under the License.
                 @mixin ProgressBarBorderRadius 8px;
             }
 
-            .mx_AddExistingToSpace_progressText {
+            .mx_AddExistingToSpaceDialog_progressText {
                 margin-top: 8px;
                 font-size: $font-15px;
                 line-height: $font-24px;
diff --git a/res/css/views/dialogs/_CreateSpaceFromCommunityDialog.scss b/res/css/views/dialogs/_CreateSpaceFromCommunityDialog.scss
index 6ff328f6ab..f1af24cc5f 100644
--- a/res/css/views/dialogs/_CreateSpaceFromCommunityDialog.scss
+++ b/res/css/views/dialogs/_CreateSpaceFromCommunityDialog.scss
@@ -74,6 +74,7 @@ limitations under the License.
             font-size: $font-12px;
             line-height: $font-15px;
             color: $secondary-content;
+            margin-top: -13px; // match height of buttons to prevent height changing
 
             .mx_ProgressBar {
                 height: 8px;
diff --git a/src/RoomInvite.tsx b/src/RoomInvite.tsx
index 7d093f4092..5c9d96f509 100644
--- a/src/RoomInvite.tsx
+++ b/src/RoomInvite.tsx
@@ -42,10 +42,15 @@ export interface IInviteResult {
  *
  * @param {string} roomId The ID of the room to invite to
  * @param {string[]} addresses Array of strings of addresses to invite. May be matrix IDs or 3pids.
+ * @param {function} progressCallback optional callback, fired after each invite.
  * @returns {Promise} Promise
  */
-export function inviteMultipleToRoom(roomId: string, addresses: string[]): Promise<IInviteResult> {
-    const inviter = new MultiInviter(roomId);
+export function inviteMultipleToRoom(
+    roomId: string,
+    addresses: string[],
+    progressCallback?: () => void,
+): Promise<IInviteResult> {
+    const inviter = new MultiInviter(roomId, progressCallback);
     return inviter.invite(addresses).then(states => Promise.resolve({ states, inviter }));
 }
 
@@ -104,8 +109,8 @@ export function isValid3pidInvite(event: MatrixEvent): boolean {
     return true;
 }
 
-export function inviteUsersToRoom(roomId: string, userIds: string[]): Promise<void> {
-    return inviteMultipleToRoom(roomId, userIds).then((result) => {
+export function inviteUsersToRoom(roomId: string, userIds: string[], progressCallback?: () => void): Promise<void> {
+    return inviteMultipleToRoom(roomId, userIds, progressCallback).then((result) => {
         const room = MatrixClientPeg.get().getRoom(roomId);
         showAnyInviteErrors(result.states, room, result.inviter);
     }).catch((err) => {
diff --git a/src/components/views/dialogs/CreateSpaceFromCommunityDialog.tsx b/src/components/views/dialogs/CreateSpaceFromCommunityDialog.tsx
index e74082427f..c7706c115c 100644
--- a/src/components/views/dialogs/CreateSpaceFromCommunityDialog.tsx
+++ b/src/components/views/dialogs/CreateSpaceFromCommunityDialog.tsx
@@ -39,6 +39,8 @@ import dis from "../../../dispatcher/dispatcher";
 import { Action } from "../../../dispatcher/actions";
 import { UserTab } from "./UserSettingsDialog";
 import TagOrderActions from "../../../actions/TagOrderActions";
+import { inviteUsersToRoom } from "../../../RoomInvite";
+import ProgressBar from "../elements/ProgressBar";
 
 interface IProps {
     matrixClient: MatrixClient;
@@ -90,10 +92,22 @@ export interface IGroupSummary {
 }
 /* eslint-enable camelcase */
 
+enum Progress {
+    NotStarted,
+    ValidatingInputs,
+    FetchingData,
+    CreatingSpace,
+    InvitingUsers,
+    // anything beyond here is inviting user n - 4
+}
+
 const CreateSpaceFromCommunityDialog: React.FC<IProps> = ({ matrixClient: cli, groupId, onFinished }) => {
     const [loading, setLoading] = useState(true);
     const [error, setError] = useState<string>(null);
-    const [busy, setBusy] = useState(false);
+
+    const [progress, setProgress] = useState(Progress.NotStarted);
+    const [numInvites, setNumInvites] = useState(0);
+    const busy = progress > 0;
 
     const [avatar, setAvatar] = useState<File>(null); // undefined means to remove avatar
     const [name, setName] = useState("");
@@ -122,30 +136,34 @@ const CreateSpaceFromCommunityDialog: React.FC<IProps> = ({ matrixClient: cli, g
         if (busy) return;
 
         setError(null);
-        setBusy(true);
+        setProgress(Progress.ValidatingInputs);
 
         // require & validate the space name field
         if (!(await spaceNameField.current.validate({ allowEmpty: false }))) {
-            setBusy(false);
+            setProgress(0);
             spaceNameField.current.focus();
             spaceNameField.current.validate({ allowEmpty: false, focused: true });
             return;
         }
         // validate the space name alias field but do not require it
         if (joinRule === JoinRule.Public && !(await spaceAliasField.current.validate({ allowEmpty: true }))) {
-            setBusy(false);
+            setProgress(0);
             spaceAliasField.current.focus();
             spaceAliasField.current.validate({ allowEmpty: true, focused: true });
             return;
         }
 
         try {
+            setProgress(Progress.FetchingData);
+
             const [rooms, members, invitedMembers] = await Promise.all([
                 cli.getGroupRooms(groupId).then(parseRoomsResponse) as Promise<IGroupRoom[]>,
                 cli.getGroupUsers(groupId).then(parseMembersResponse) as Promise<GroupMember[]>,
                 cli.getGroupInvitedUsers(groupId).then(parseMembersResponse) as Promise<GroupMember[]>,
             ]);
 
+            setNumInvites(members.length + invitedMembers.length);
+
             const viaMap = new Map<string, string[]>();
             for (const { roomId, canonicalAlias } of rooms) {
                 const room = cli.getRoom(roomId);
@@ -167,6 +185,8 @@ const CreateSpaceFromCommunityDialog: React.FC<IProps> = ({ matrixClient: cli, g
                 }
             }
 
+            setProgress(Progress.CreatingSpace);
+
             const spaceAvatar = avatar !== undefined ? avatar : groupSummary.profile.avatar_url;
             const roomId = await createSpace(name, joinRule === JoinRule.Public, alias, topic, spaceAvatar, {
                 creation_content: {
@@ -179,11 +199,16 @@ const CreateSpaceFromCommunityDialog: React.FC<IProps> = ({ matrixClient: cli, g
                         via: viaMap.get(roomId) || [],
                     },
                 })),
-                invite: [...members, ...invitedMembers].map(m => m.userId).filter(m => m !== cli.getUserId()),
+                // we do not specify the inviters here because Synapse applies a limit and this may cause it to trip
             }, {
                 andView: false,
             });
 
+            setProgress(Progress.InvitingUsers);
+
+            const userIds = [...members, ...invitedMembers].map(m => m.userId).filter(m => m !== cli.getUserId());
+            await inviteUsersToRoom(roomId, userIds, () => setProgress(p => p + 1));
+
             // eagerly remove it from the community panel
             dis.dispatch(TagOrderActions.removeTag(cli, groupId));
 
@@ -250,7 +275,7 @@ const CreateSpaceFromCommunityDialog: React.FC<IProps> = ({ matrixClient: cli, g
             setError(e);
         }
 
-        setBusy(false);
+        setProgress(Progress.NotStarted);
     };
 
     let footer;
@@ -267,13 +292,41 @@ const CreateSpaceFromCommunityDialog: React.FC<IProps> = ({ matrixClient: cli, g
                 { _t("Retry") }
             </AccessibleButton>
         </>;
+    } else if (busy) {
+        let description: string;
+        switch (progress) {
+            case Progress.ValidatingInputs:
+            case Progress.FetchingData:
+                description = _t("Fetching data...");
+                break;
+            case Progress.CreatingSpace:
+                description = _t("Creating Space...");
+                break;
+            case Progress.InvitingUsers:
+            default:
+                description = _t("Adding rooms... (%(progress)s out of %(count)s)", {
+                    count: numInvites,
+                    progress,
+                });
+                break;
+        }
+
+        footer = <span>
+            <ProgressBar
+                value={progress > Progress.FetchingData ? progress : 0}
+                max={numInvites + Progress.InvitingUsers}
+            />
+            <div className="mx_CreateSpaceFromCommunityDialog_progressText">
+                { description }
+            </div>
+        </span>;
     } else {
         footer = <>
-            <AccessibleButton kind="primary_outline" disabled={busy} onClick={() => onFinished()}>
+            <AccessibleButton kind="primary_outline" onClick={() => onFinished()}>
                 { _t("Cancel") }
             </AccessibleButton>
-            <AccessibleButton kind="primary" disabled={busy} onClick={onCreateSpaceClick}>
-                { busy ? _t("Creating...") : _t("Create Space") }
+            <AccessibleButton kind="primary" onClick={onCreateSpaceClick}>
+                { _t("Create Space") }
             </AccessibleButton>
         </>;
     }
diff --git a/src/i18n/strings/en_EN.json b/src/i18n/strings/en_EN.json
index 78b6382cd4..bdc86a9e08 100644
--- a/src/i18n/strings/en_EN.json
+++ b/src/i18n/strings/en_EN.json
@@ -2280,6 +2280,8 @@
     "<SpaceName/> has been made and everyone who was a part of the community has been invited to it.": "<SpaceName/> has been made and everyone who was a part of the community has been invited to it.",
     "To create a Space from another community, just pick the community in Preferences.": "To create a Space from another community, just pick the community in Preferences.",
     "Failed to migrate community": "Failed to migrate community",
+    "Fetching data...": "Fetching data...",
+    "Creating Space...": "Creating Space...",
     "Create Space from community": "Create Space from community",
     "A link to the Space will be put in your community description.": "A link to the Space will be put in your community description.",
     "All rooms will be added and all community members will be invited.": "All rooms will be added and all community members will be invited.",
diff --git a/src/utils/MultiInviter.ts b/src/utils/MultiInviter.ts
index 5b79a2ff93..abf72c97ff 100644
--- a/src/utils/MultiInviter.ts
+++ b/src/utils/MultiInviter.ts
@@ -62,8 +62,9 @@ export default class MultiInviter {
 
     /**
      * @param {string} targetId The ID of the room or group to invite to
+     * @param {function} progressCallback optional callback, fired after each invite.
      */
-    constructor(targetId: string) {
+    constructor(targetId: string, private readonly progressCallback?: () => void) {
         if (targetId[0] === '+') {
             this.roomId = null;
             this.groupId = targetId;
@@ -181,6 +182,7 @@ export default class MultiInviter {
                 delete this.errors[address];
 
                 resolve();
+                this.progressCallback?.();
             }).catch((err) => {
                 if (this.canceled) {
                     return;