diff --git a/src/tchap/components/views/dialogs/TchapCreateRoomDialog.tsx b/src/tchap/components/views/dialogs/TchapCreateRoomDialog.tsx
index ac5184f0dd..b3507899a5 100644
--- a/src/tchap/components/views/dialogs/TchapCreateRoomDialog.tsx
+++ b/src/tchap/components/views/dialogs/TchapCreateRoomDialog.tsx
@@ -32,7 +32,7 @@ import TchapCreateRoom from "../../../lib/createTchapRoom";
 interface IProps {
     defaultPublic?: boolean; // unused for Tchap version
     defaultName?: string;
-    parentSpace?: Room; // unused for Tchap version
+    parentSpace?: Room; 
     defaultEncrypted?: boolean; // unused for Tchap version
     onFinished(proceed: boolean, opts?: IOpts): void;
 }
@@ -47,9 +47,11 @@ interface IState {
 
 export default class TchapCreateRoomDialog extends React.Component<IProps, IState> {
     private nameField = createRef<Field>();
+    private readonly createRoomInSpace: boolean;
 
     public constructor(props) {
         super(props);
+        this.createRoomInSpace = !!this.props.parentSpace;
 
         const federationOptions = TchapUtils.getRoomFederationOptions();
 
@@ -132,6 +134,7 @@ export default class TchapCreateRoomDialog extends React.Component<IProps, IStat
                     this.state.name,
                     this.state.tchapRoomType,
                     this.isSelectedRoomFederated(),
+                    this.props.parentSpace
                 ),
             );
         } else {
@@ -149,7 +152,7 @@ export default class TchapCreateRoomDialog extends React.Component<IProps, IStat
     public render() {
         const shortDomain: string = TchapUtils.getShortDomain();
 
-        const title = _t("Create a room");
+        const title = this.createRoomInSpace ? _t("Create a room in this space") : _t("Create a room");
 
         return (
             <BaseDialog
@@ -176,6 +179,7 @@ export default class TchapCreateRoomDialog extends React.Component<IProps, IStat
                             forumFederationSwitchValue={this.state.forumFederationSwitchValue}
                             setForumFederationSwitchValue={this.onForumFederatedChange}
                             setRoomType={this.onTchapRoomTypeChange}
+                            createRoomInSpace={this.createRoomInSpace}
                         />
                     </div>
                 </form>
diff --git a/src/tchap/components/views/elements/TchapRoomTypeSelector.tsx b/src/tchap/components/views/elements/TchapRoomTypeSelector.tsx
index 5f23cc05e7..b91dd5ba5d 100644
--- a/src/tchap/components/views/elements/TchapRoomTypeSelector.tsx
+++ b/src/tchap/components/views/elements/TchapRoomTypeSelector.tsx
@@ -21,6 +21,7 @@ interface IProps {
     forumFederationSwitchValue?: boolean;
     setRoomType(value: TchapRoomType): void;
     setForumFederationSwitchValue(forumFederationSwitchValue: boolean): void;
+    createRoomInSpace: boolean;
 }
 
 interface IState {
@@ -83,7 +84,7 @@ export default class TchapRoomTypeSelector extends React.Component<IProps, IStat
                         onChange={this.onRoomTypeChange}
                     >
                         <div className="tc_TchapRoomTypeSelector_RadioButton_title">{_t("Private room")}</div>
-                        <div>{_t("Accessible to all users by invitation from an administrator.")}</div>
+                        <div>{this.props.createRoomInSpace ? _t("Private discussions accessible to all users of this space.")  : _t("Accessible to all users by invitation from an administrator.")}</div>
                     </StyledRadioButton>
                 </label>
                 <label className={externalClasses}>
@@ -97,7 +98,7 @@ export default class TchapRoomTypeSelector extends React.Component<IProps, IStat
                             {_t("Private room open to external users")}
                         </div>
                         <div>
-                            {_t("Accessible to all users and to external guests by invitation of an administrator.")}
+                            {this.props.createRoomInSpace ? _t("Private discussions accessible to all users of this space and to external guests by invitation of an administrator.") : _t("Accessible to all users and to external guests by invitation of an administrator.")}
                         </div>
                     </StyledRadioButton>
                 </label>
@@ -109,7 +110,7 @@ export default class TchapRoomTypeSelector extends React.Component<IProps, IStat
                         onChange={this.onRoomTypeChange}
                     >
                         <div className="tc_TchapRoomTypeSelector_RadioButton_title">{_t("Forum room")}</div>
-                        <div>{_t("Accessible to all users from the forum directory or from a shared link.")}</div>
+                        <div>{this.props.createRoomInSpace ? _t("Public discussion accessible to all users of this space or from a shared link.") : _t("Accessible to all users from the forum directory or from a shared link.")}</div>
                         {roomFederateOpt}
                     </StyledRadioButton>
                 </label>
diff --git a/src/tchap/i18n/strings/tchap_translations.json b/src/tchap/i18n/strings/tchap_translations.json
index 9627a04cfc..ed1904dea6 100644
--- a/src/tchap/i18n/strings/tchap_translations.json
+++ b/src/tchap/i18n/strings/tchap_translations.json
@@ -57,6 +57,22 @@
     "en":"Allow access to this room to all users, even outside \"%(domain)s\" domain",
     "fr":"Autoriser l'accès à tous les utilisateurs, même ceux qui ne sont pas membres du domaine \"%(domain)s\""
   },
+  "Create a room in this space": {
+    "en": "Create a room in this space",
+    "fr": "Créer un salon dans cet espace"
+  },
+  "Private discussions accessible to all users of this space.": {
+    "en": "Private discussions accessible to all users of this space.",
+    "fr": "Discussions privées accessibles à tous les membres de cet espace"
+  },
+  "Private discussions accessible to all users of this space and to external guests by invitation of an administrator.": {
+    "en": "Private discussions accessible to all users of this space and to external guests by invitation of an administrator.",
+    "fr": "Discussions privées accessibles à tous les membres de cet espace et aux utilisateurs externes sur invitation d'un administrateur."
+  },
+  "Public discussion accessible to all users of this space or from a shared link.": {
+    "en": "Public discussion accessible to all users of this space or from a shared link.",
+    "fr": "Discussions publiques accessibles à tous les membres de cet espace ou depuis un lien de partage."
+  },
   "Scanning": {
     "en": "Scanning",
     "fr": "Scanning"
diff --git a/src/tchap/lib/createTchapRoom.ts b/src/tchap/lib/createTchapRoom.ts
index e5680fcd1c..03f7c496a2 100644
--- a/src/tchap/lib/createTchapRoom.ts
+++ b/src/tchap/lib/createTchapRoom.ts
@@ -18,6 +18,7 @@ export default class TchapCreateRoom {
         name: string,
         tchapRoomType: TchapRoomType,
         federate: boolean = DEFAULT_FEDERATE_VALUE,
+        parentSpace?: Room
     ): IOpts {
         const opts: IOpts = {};
         const createRoomOpts: ICreateRoomOpts = {};
@@ -30,10 +31,18 @@ export default class TchapCreateRoom {
         createRoomOpts.creation_content = { "m.federate": federate };
         createRoomOpts.initial_state = createRoomOpts.initial_state || [];
 
+        if(parentSpace) {
+            opts.parentSpace = parentSpace;
+        }
+
         switch (tchapRoomType) {
             case TchapRoomType.Forum: {
-                //"Forum" only for tchap members and not encrypted
-                createRoomOpts.visibility = Visibility.Public;
+                // Space "Forum" only for space members and not encrypted
+                if (parentSpace) {
+                    createRoomOpts.visibility = Visibility.PrivateChat;
+                } else {      //"Forum" only for tchap members and not encrypted
+                    createRoomOpts.visibility = Visibility.Public;
+                }
                 createRoomOpts.preset = Preset.PublicChat;
                 // Here we could have used createRoomOpts.accessRule directly,
                 // but since accessRules are a custom Tchap event, it is ignored by later code.
@@ -46,7 +55,12 @@ export default class TchapCreateRoom {
                     state_key: "",
                 });
 
-                opts.joinRule = JoinRule.Public;
+                //Open to space by default
+                if (parentSpace) {
+                    opts.joinRule = JoinRule.Restricted;
+                } else {
+                    opts.joinRule = JoinRule.Public;
+                }
                 opts.encryption = false;
                 opts.historyVisibility = HistoryVisibility.Shared;
                 break;
@@ -62,7 +76,12 @@ export default class TchapCreateRoom {
                     type: TchapRoomAccessRulesEventId,
                     state_key: "",
                 });
-                opts.joinRule = JoinRule.Invite;
+                //Open to space by default
+                if (parentSpace) {
+                    opts.joinRule = JoinRule.Restricted;
+                } else {
+                    opts.joinRule = JoinRule.Invite;
+                }
                 opts.encryption = true;
                 opts.historyVisibility = HistoryVisibility.Invited;
                 break;
@@ -78,7 +97,12 @@ export default class TchapCreateRoom {
                     type: TchapRoomAccessRulesEventId,
                     state_key: "",
                 });
-                opts.joinRule = JoinRule.Invite;
+                //Open to space by default
+                if (parentSpace) {
+                    opts.joinRule = JoinRule.Restricted;
+                } else {
+                    opts.joinRule = JoinRule.Invite;
+                }
                 opts.encryption = true;
                 opts.historyVisibility = HistoryVisibility.Invited;
                 break;