diff --git a/app/assets/javascripts/angular/config/work-packages-config.js b/app/assets/javascripts/angular/config/work-packages-config.js
index 40991f445b..588d567f1f 100644
--- a/app/assets/javascripts/angular/config/work-packages-config.js
+++ b/app/assets/javascripts/angular/config/work-packages-config.js
@@ -61,7 +61,7 @@ angular.module('openproject.workPackages.config')
   estimated_hours: { type: 'integer', order: 15, name: 'Estimated time' },
   done_ratio: { type: 'integer', order: 16, name: '% done' },
   project_id: { type: 'list_model', modelName: 'project', order: 17, name: 'Project' },
-  subproject_id: { type: 'list_model', modelName: 'project', order: 18, name: 'Sub-project' },
+  subproject_id: { type: 'list_model', modelName: 'sub_project', order: 18, name: 'Sub-project' },
 })
 
 .constant('DEFAULT_SORT_CRITERIA', 'parent:desc')
diff --git a/app/assets/javascripts/angular/controllers/work-packages-controller.js b/app/assets/javascripts/angular/controllers/work-packages-controller.js
index 7e4d136d12..9b9d93cec2 100644
--- a/app/assets/javascripts/angular/controllers/work-packages-controller.js
+++ b/app/assets/javascripts/angular/controllers/work-packages-controller.js
@@ -53,6 +53,7 @@ angular.module('openproject.workPackages.controllers')
   function initQuery(queryData) {
     $scope.query = new Query({
       id: $scope.queryId,
+      project_id: queryData.project_id,
       displaySums: queryData.display_sums,
       groupSums: queryData.group_sums,
       sums: queryData.sums,
diff --git a/app/assets/javascripts/angular/helpers/components/path-helper.js b/app/assets/javascripts/angular/helpers/components/path-helper.js
index 668be6ab18..ff11235911 100644
--- a/app/assets/javascripts/angular/helpers/components/path-helper.js
+++ b/app/assets/javascripts/angular/helpers/components/path-helper.js
@@ -55,6 +55,9 @@ angular.module('openproject.helpers')
     versionPath: function(versionId) {
       return PathHelper.versionsPath() + '/' + versionId;
     },
+    subProjectsPath: function() {
+      return '/sub_projects';
+    },
 
     apiV2ProjectPath: function(projectIdentifier) {
       return PathHelper.apiPrefixV2 + PathHelper.projectPath(projectIdentifier);
@@ -68,6 +71,9 @@ angular.module('openproject.helpers')
     apiProjectWorkPackagesPath: function(projectIdentifier) {
       return PathHelper.apiV3ProjectPath(projectIdentifier) + PathHelper.workPackagesPath();
     },
+    apiProjectSubProjectsPath: function(projectIdentifier) {
+      return PathHelper.apiV3ProjectPath(projectIdentifier) + PathHelper.subProjectsPath();
+    },
     apiAvailableColumnsPath: function() {
       return PathHelper.apiPrefixV3 + '/queries/available_columns';
     },
diff --git a/app/assets/javascripts/angular/models/query.js b/app/assets/javascripts/angular/models/query.js
index b4a1508ece..fc661c2b6c 100644
--- a/app/assets/javascripts/angular/models/query.js
+++ b/app/assets/javascripts/angular/models/query.js
@@ -31,22 +31,32 @@ angular.module('openproject.models')
 .factory('Query', ['Filter', 'Sortation', 'AVAILABLE_WORK_PACKAGE_FILTERS', function(Filter, Sortation, AVAILABLE_WORK_PACKAGE_FILTERS) {
 
   Query = function (data, options) {
-    this.available_work_package_filters = AVAILABLE_WORK_PACKAGE_FILTERS;
 
     angular.extend(this, data, options);
 
     this.group_by = this.group_by || '';
 
-    if (this.filters === undefined){
-      this.filters = [];
-    } else {
-      this.filters = this.filters.map(function(filterData){
-        return new Filter(filterData);
-      });
-    }
+    this.initFilters();
   };
 
   Query.prototype = {
+    initFilters: function() {
+      this.available_work_package_filters = AVAILABLE_WORK_PACKAGE_FILTERS;
+      if (this.project_id){
+        // Remove project
+        delete this.available_work_package_filters["project_id"]
+      }
+      // TODO RS: Need to assertain if there are any sub-projects and remove this filter if not.
+      // The project will have to be fetch prior to this.
+
+      if (this.filters === undefined){
+        this.filters = [];
+      } else {
+        this.filters = this.filters.map(function(filterData){
+          return new Filter(filterData);
+        });
+      }
+    },
     /**
      * @name toParams
      *
diff --git a/app/assets/javascripts/angular/services/project-service.js b/app/assets/javascripts/angular/services/project-service.js
new file mode 100644
index 0000000000..01feb491d1
--- /dev/null
+++ b/app/assets/javascripts/angular/services/project-service.js
@@ -0,0 +1,27 @@
+angular.module('openproject.services')
+
+.service('ProjectService', ['$http', 'PathHelper', function($http, PathHelper) {
+
+  var ProjectService = {
+    getProject: function(projectIdentifier) {
+      var url = PathHelper.apiV3ProjectPath(projectIdentifier);
+
+      return ProjectService.doQuery(url);
+    },
+
+    getSubProjects: function(projectIdentifier) {
+      var url = PathHelper.apiProjectSubProjectsPath(projectIdentifier);
+
+      return ProjectService.doQuery(url);
+    },
+
+    doQuery: function(url, params) {
+      return $http.get(url, { params: params })
+        .then(function(response){
+          return response.data.projects;
+        });
+    }
+  };
+
+  return ProjectService;
+}]);
diff --git a/app/assets/javascripts/angular/services/query-service.js b/app/assets/javascripts/angular/services/query-service.js
index 23799b70a8..8bb3520a52 100644
--- a/app/assets/javascripts/angular/services/query-service.js
+++ b/app/assets/javascripts/angular/services/query-service.js
@@ -28,7 +28,8 @@
 
 angular.module('openproject.services')
 
-.service('QueryService', ['$http', 'PathHelper', '$q', 'AVAILABLE_WORK_PACKAGE_FILTERS', 'StatusService', 'TypeService', 'PriorityService', 'UserService', 'VersionService', 'RoleService', 'GroupService', function($http, PathHelper, $q, AVAILABLE_WORK_PACKAGE_FILTERS, StatusService, TypeService, PriorityService, UserService, VersionService, RoleService, GroupService) {
+.service('QueryService', ['$http', 'PathHelper', '$q', 'AVAILABLE_WORK_PACKAGE_FILTERS', 'StatusService', 'TypeService', 'PriorityService', 'UserService', 'VersionService', 'RoleService', 'GroupService', 'ProjectService',
+  function($http, PathHelper, $q, AVAILABLE_WORK_PACKAGE_FILTERS, StatusService, TypeService, PriorityService, UserService, VersionService, RoleService, GroupService, ProjectService) {
 
   var availableColumns = [], availableFilterValues = {};
 
@@ -69,6 +70,12 @@ angular.module('openproject.services')
           case 'group':
             retrieveAvailableValues = GroupService.getGroups();
             break;
+          case 'project':
+            retrieveAvailableValues = ProjectService.getProject();
+            break;
+          case 'sub_project':
+            retrieveAvailableValues = ProjectService.getSubProjects(projectIdentifier);
+            break;
         }
 
         return retrieveAvailableValues.then(function(values) {
diff --git a/app/controllers/api/v3/projects_controller.rb b/app/controllers/api/v3/projects_controller.rb
new file mode 100644
index 0000000000..91613f79a1
--- /dev/null
+++ b/app/controllers/api/v3/projects_controller.rb
@@ -0,0 +1,60 @@
+#-- encoding: UTF-8
+#-- copyright
+# OpenProject is a project management system.
+# Copyright (C) 2012-2014 the OpenProject Foundation (OPF)
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 3.
+#
+# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
+# Copyright (C) 2006-2013 Jean-Philippe Lang
+# Copyright (C) 2010-2013 the ChiliProject Team
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+# See doc/COPYRIGHT.rdoc for more details.
+#++
+
+module Api
+  module V3
+
+    class ProjectsController < ApplicationController
+      before_filter :find_project
+
+      include ::Api::V3::ApiController
+
+      def show
+        respond_to do |format|
+          format.api
+        end
+      end
+
+      def sub_projects
+        @sub_projects = @project.descendants.visible
+
+        respond_to do |format|
+          format.api
+        end
+      end
+
+      private
+
+      def find_project
+        @project = Project.find(params[:project_id])
+      end
+
+    end
+  end
+end
diff --git a/app/views/api/v3/projects/index.api.rabl b/app/views/api/v3/projects/index.api.rabl
new file mode 100644
index 0000000000..2aaea58e7a
--- /dev/null
+++ b/app/views/api/v3/projects/index.api.rabl
@@ -0,0 +1,4 @@
+
+collection @projects => :projects
+attributes :id,
+           :name
\ No newline at end of file
diff --git a/app/views/api/v3/projects/sub_projects.api.rabl b/app/views/api/v3/projects/sub_projects.api.rabl
new file mode 100644
index 0000000000..e0874daab9
--- /dev/null
+++ b/app/views/api/v3/projects/sub_projects.api.rabl
@@ -0,0 +1,4 @@
+
+collection @sub_projects => :projects
+attributes :id,
+           :name
\ No newline at end of file
diff --git a/config/routes.rb b/config/routes.rb
index c96384017c..8936d07813 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -133,6 +133,7 @@ OpenProject::Application.routes.draw do
           get :available_columns, on: :collection
         end
         resources :versions, only: [:index]
+        get :sub_projects
       end
 
       resources :groups, only: [:index]