diff --git a/invenio_communities/members/services/request.py b/invenio_communities/members/services/request.py
index 7d193c418..d607be264 100644
--- a/invenio_communities/members/services/request.py
+++ b/invenio_communities/members/services/request.py
@@ -17,8 +17,10 @@
 from invenio_communities.notifications.builders import (
     CommunityInvitationAcceptNotificationBuilder,
     CommunityInvitationCancelNotificationBuilder,
+    CommunityInvitationCommentNotificationBuilder,
     CommunityInvitationDeclineNotificationBuilder,
     CommunityInvitationExpireNotificationBuilder,
+    CommunityRequestCommentNotificationBuilder,
 )
 
 from ...proxies import current_communities
@@ -117,6 +119,8 @@ class CommunityInvitation(RequestType):
         "expire": ExpireAction,
     }
 
+    comment_notification_builder = CommunityInvitationCommentNotificationBuilder
+
     creator_can_be_none = False
     topic_can_be_none = False
     allowed_creator_ref_types = ["community"]
@@ -158,6 +162,8 @@ class MembershipRequestRequestType(RequestType):
         "cancel": CancelMembershipRequestAction,
     }
 
+    comment_notification_builder = CommunityRequestCommentNotificationBuilder
+
     creator_can_be_none = False
     topic_can_be_none = False
     allowed_creator_ref_types = ["user"]
diff --git a/invenio_communities/notifications/builders.py b/invenio_communities/notifications/builders.py
index 0beb82a8b..7a505c068 100644
--- a/invenio_communities/notifications/builders.py
+++ b/invenio_communities/notifications/builders.py
@@ -13,6 +13,7 @@
 from invenio_notifications.services.builders import NotificationBuilder
 from invenio_notifications.services.generators import EntityResolve, UserEmailBackend
 from invenio_requests.notifications.filters import UserRecipientFilter
+from invenio_requests.notifications.generators import RequestParticipantsRecipient
 from invenio_users_resources.notifications.filters import UserPreferencesRecipientFilter
 from invenio_users_resources.notifications.generators import UserRecipient
 
@@ -40,13 +41,15 @@ class BaseNotificationBuilder(NotificationBuilder):
 class CommunityInvitationNotificationBuilder(BaseNotificationBuilder):
     """Base notification builder for community invitation action."""
 
+    type = "community-invitation"
+
 
 class CommunityInvitationSubmittedNotificationBuilder(
     CommunityInvitationNotificationBuilder
 ):
     """Notification builder for community invitation submit action."""
 
-    type = "community-invitation.submit"
+    type = f"{CommunityInvitationNotificationBuilder.type}.submit"
 
     @classmethod
     def build(cls, request, role, message=None):
@@ -70,7 +73,7 @@ class CommunityInvitationAcceptNotificationBuilder(
 ):
     """Notification builder for community invitation accept action."""
 
-    type = "community-invitation.accept"
+    type = f"{CommunityInvitationNotificationBuilder.type}.accept"
 
     @classmethod
     def build(cls, request):
@@ -92,7 +95,7 @@ class CommunityInvitationCancelNotificationBuilder(
 ):
     """Notification builder for community invitation cancel action."""
 
-    type = "community-invitation.cancel"
+    type = f"{CommunityInvitationNotificationBuilder.type}.cancel"
 
     @classmethod
     def build(cls, request):
@@ -114,7 +117,7 @@ class CommunityInvitationDeclineNotificationBuilder(
 ):
     """Notification builder for community invitation decline action."""
 
-    type = "community-invitation.decline"
+    type = f"{CommunityInvitationNotificationBuilder.type}.decline"
 
     @classmethod
     def build(cls, request):
@@ -136,7 +139,7 @@ class CommunityInvitationExpireNotificationBuilder(
 ):
     """Notification builder for community invitation expire action."""
 
-    type = "community-invitation.expire"
+    type = f"{CommunityInvitationNotificationBuilder.type}.expire"
 
     @classmethod
     def build(cls, request):
@@ -292,7 +295,7 @@ class SubComInvitationExpire(SubComInvitationBuilderBase):
 #
 # Comments
 #
-class SubComCommentNotificationBuilderBase(SubCommunityBuilderBase):
+class CommunityCommentNotificationBuilderBase(SubCommunityBuilderBase):
     """Notification builder for comment request event creation."""
 
     context = [
@@ -321,13 +324,47 @@ def build(cls, request, request_event):
     ]
 
 
-class SubComReqCommentNotificationBuilder(SubComCommentNotificationBuilderBase):
+class CommunityRequestCommentNotificationBuilder(
+    CommunityCommentNotificationBuilderBase
+):
+    """Notification builder for community membership request comment creation.
+
+    The CommunityRequest notification builders are shared with CommunityInvitation,
+    but here we have different handlers for comments as the receiver/creator are
+    different in each case.
+
+    Requests go to a community and invitations go to a user. CommunityMembersRecipient
+    doesn't allow you to pass a user object, so we manually set which party is the community.
+    """
+
+    type = f"comment-community-request.create"
+
+    recipients = [
+        RequestParticipantsRecipient(key="request"),
+        CommunityMembersRecipient("request.receiver", roles=["owner", "manager"]),
+    ]
+
+
+class CommunityInvitationCommentNotificationBuilder(
+    CommunityCommentNotificationBuilderBase
+):
+    """Notification builder for community membership invitation comment creation."""
+
+    type = f"comment-{CommunityInvitationNotificationBuilder.type}.create"
+
+    recipients = [
+        RequestParticipantsRecipient(key="request"),
+        CommunityMembersRecipient("request.created_by", roles=["owner", "manager"]),
+    ]
+
+
+class SubComReqCommentNotificationBuilder(CommunityCommentNotificationBuilderBase):
     """Notification builder for comment request event creation."""
 
     type = f"comment-{SubCommunityBuilderBase.type}.create"
 
 
-class SubComInvCommentNotificationBuilder(SubComCommentNotificationBuilderBase):
+class SubComInvCommentNotificationBuilder(CommunityCommentNotificationBuilderBase):
     """Notification builder for comment request event creation."""
 
     type = f"comment-{SubComInvitationBuilderBase.type}.create"
diff --git a/invenio_communities/templates/semantic-ui/invenio_notifications/comment-community-invitation.create.jinja b/invenio_communities/templates/semantic-ui/invenio_notifications/comment-community-invitation.create.jinja
new file mode 100644
index 000000000..756968fb0
--- /dev/null
+++ b/invenio_communities/templates/semantic-ui/invenio_notifications/comment-community-invitation.create.jinja
@@ -0,0 +1,61 @@
+{% set invenio_request = notification.context.request %}
+{% set invenio_request_event = notification.context.request_event %}
+
+{# created_by is either a resolved user or an email (for guests) #}
+{% set event_creator_name = invenio_request_event.created_by.username or invenio_request_event.created_by %}
+{% set request_id = invenio_request.id %}
+{% set request_event_content = invenio_request_event.payload.content | safe %}
+{% set request_title = invenio_request.title | safe %}
+{% set parent_community = invenio_request.receiver.slug %}
+
+{# TODO: use request.links.self_html when issue issue is resolved: https://github.com/inveniosoftware/invenio-rdm-records/issues/1327 #}
+{% set request_link = "{ui}/communities/{parent_community}/requests/{request_id}".format(
+    ui=config.SITE_UI_URL, parent_community=parent_community, request_id=request_id
+    )
+%}
+{% set account_settings_link = "{ui}/account/settings/notifications".format(
+    ui=config.SITE_UI_URL
+    )
+%}
+
+{%- block subject -%}
+{{ _("💬 New comment on '{request_title}'").format(request_title=request_title) }}
+{%- endblock subject -%}
+
+{%- block html_body -%}
+<table style="font-family:'Lato',Helvetica,Arial,sans-serif;border-spacing:15px">
+    <tr>
+        <td>{{ _("'@{user_name}' commented on '{request_title}':").format(user_name=event_creator_name, request_title=request_title) }}</td>
+    </tr>
+    <tr>
+        <td><em>{{ request_event_content }}</em></td>
+    </tr>
+    <tr>
+        <td><a href="{{ request_link }}" class="button">{{ _("Check out the request")}}</a></td>
+    </tr>
+    <tr>
+        <td><strong>_</strong></td>
+    </tr>
+    <tr>
+        <td style="font-size:smaller">{{ _("This is an auto-generated message. To manage notifications, visit your")}} <a href="{{account_settings_link}}">{{ _("account settings")}}</a>.</td>
+    </tr>
+</table>
+{%- endblock html_body %}
+
+{%- block plain_body -%}
+{{ _("@{user_name} commented on '{request_title}'").format(user_name=event_creator_name, request_title=request_title) }}.
+
+{{ request_event_content }}
+
+{{ _("Check out the request: {request_link}").format(request_link=request_link) }}
+
+{%- endblock plain_body %}
+
+{# Markdown for Slack/Mattermost/chat #}
+{%- block md_body -%}
+{{ _("*@{user_name}* commented on *{request_title}*").format(user_name=event_creator_name, request_title=request_title) }}.
+
+{{ request_event_content }}
+
+[{{_("Check out the request")}}]({{request_link}})
+{%- endblock md_body %}
diff --git a/invenio_communities/templates/semantic-ui/invenio_notifications/comment-community-request.create.jinja b/invenio_communities/templates/semantic-ui/invenio_notifications/comment-community-request.create.jinja
new file mode 100644
index 000000000..756968fb0
--- /dev/null
+++ b/invenio_communities/templates/semantic-ui/invenio_notifications/comment-community-request.create.jinja
@@ -0,0 +1,61 @@
+{% set invenio_request = notification.context.request %}
+{% set invenio_request_event = notification.context.request_event %}
+
+{# created_by is either a resolved user or an email (for guests) #}
+{% set event_creator_name = invenio_request_event.created_by.username or invenio_request_event.created_by %}
+{% set request_id = invenio_request.id %}
+{% set request_event_content = invenio_request_event.payload.content | safe %}
+{% set request_title = invenio_request.title | safe %}
+{% set parent_community = invenio_request.receiver.slug %}
+
+{# TODO: use request.links.self_html when issue issue is resolved: https://github.com/inveniosoftware/invenio-rdm-records/issues/1327 #}
+{% set request_link = "{ui}/communities/{parent_community}/requests/{request_id}".format(
+    ui=config.SITE_UI_URL, parent_community=parent_community, request_id=request_id
+    )
+%}
+{% set account_settings_link = "{ui}/account/settings/notifications".format(
+    ui=config.SITE_UI_URL
+    )
+%}
+
+{%- block subject -%}
+{{ _("💬 New comment on '{request_title}'").format(request_title=request_title) }}
+{%- endblock subject -%}
+
+{%- block html_body -%}
+<table style="font-family:'Lato',Helvetica,Arial,sans-serif;border-spacing:15px">
+    <tr>
+        <td>{{ _("'@{user_name}' commented on '{request_title}':").format(user_name=event_creator_name, request_title=request_title) }}</td>
+    </tr>
+    <tr>
+        <td><em>{{ request_event_content }}</em></td>
+    </tr>
+    <tr>
+        <td><a href="{{ request_link }}" class="button">{{ _("Check out the request")}}</a></td>
+    </tr>
+    <tr>
+        <td><strong>_</strong></td>
+    </tr>
+    <tr>
+        <td style="font-size:smaller">{{ _("This is an auto-generated message. To manage notifications, visit your")}} <a href="{{account_settings_link}}">{{ _("account settings")}}</a>.</td>
+    </tr>
+</table>
+{%- endblock html_body %}
+
+{%- block plain_body -%}
+{{ _("@{user_name} commented on '{request_title}'").format(user_name=event_creator_name, request_title=request_title) }}.
+
+{{ request_event_content }}
+
+{{ _("Check out the request: {request_link}").format(request_link=request_link) }}
+
+{%- endblock plain_body %}
+
+{# Markdown for Slack/Mattermost/chat #}
+{%- block md_body -%}
+{{ _("*@{user_name}* commented on *{request_title}*").format(user_name=event_creator_name, request_title=request_title) }}.
+
+{{ request_event_content }}
+
+[{{_("Check out the request")}}]({{request_link}})
+{%- endblock md_body %}