diff --git a/addons/api/addon/mixins/scope-adapter.js b/addons/api/addon/mixins/scope-adapter.js
index 291eebd5f..705e5f1c0 100644
--- a/addons/api/addon/mixins/scope-adapter.js
+++ b/addons/api/addon/mixins/scope-adapter.js
@@ -7,8 +7,22 @@ import { inject as service } from '@ember/service';
  * reported by `ScopeService`.
  */
 export default Mixin.create({
+  // =services
+
   scope: service(),
 
+  // =properties
+
+  /**
+   * If true and the current scope has a project, will include the project in
+   * the resource path.  Set to false for resources that are scoped exclusively
+   * to org.
+   * @type {boolean}
+   */
+  includeProject: true,
+
+  // =methods
+
   /**
    * Appends a scope path to the URL prefix, if a scope is set.
    * @override
@@ -33,7 +47,7 @@ export default Mixin.create({
     const { org, project } = this.scope;
     const scopePath = [];
     if (org) scopePath.push('orgs', org.id);
-    if (project) scopePath.push('projects', project.id);
+    if (project && this.includeProject) scopePath.push('projects', project.id);
     return scopePath.join('/');
   },
 });
diff --git a/addons/api/tests/unit/mixins/scope-adapter-test.js b/addons/api/tests/unit/mixins/scope-adapter-test.js
index 7f0c9386b..5e042ae93 100644
--- a/addons/api/tests/unit/mixins/scope-adapter-test.js
+++ b/addons/api/tests/unit/mixins/scope-adapter-test.js
@@ -50,4 +50,19 @@ module('Unit | Mixin | scope-adapter', function (hooks) {
     url = adapter._buildURL('model', 1);
     assert.equal(url, '/api/v1/models/1');
   });
+
+  test('it does not add a project scope to basic URLs when includeProject is false', function (assert) {
+    assert.expect(1);
+    const service = this.owner.lookup('service:scope');
+    service.org = { id: 1 };
+    service.project = { id: 2 };
+    const ScopeAdapter = RESTAdapter.extend(ScopeAdapterMixin, {
+      namespace: 'api/v1',
+      includeProject: false,
+    });
+    this.owner.register('adapter:scope', ScopeAdapter);
+    const adapter = this.owner.lookup('adapter:scope');
+    let url = adapter._buildURL('model', 1);
+    assert.equal(url, '/api/v1/orgs/1/models/1');
+  });
 });