diff --git a/packages/eslint-plugin/src/util/explicitReturnTypeUtils.ts b/packages/eslint-plugin/src/util/explicitReturnTypeUtils.ts
index a8030da1bfb..512ff62202b 100644
--- a/packages/eslint-plugin/src/util/explicitReturnTypeUtils.ts
+++ b/packages/eslint-plugin/src/util/explicitReturnTypeUtils.ts
@@ -336,6 +336,11 @@ function ancestorHasReturnType(node: FunctionNode): boolean {
           return true;
         }
         break;
+      case AST_NODE_TYPES.PropertyDefinition:
+        if (ancestor.typeAnnotation) {
+          return true;
+        }
+        break;
     }
 
     ancestor = ancestor.parent;
diff --git a/packages/eslint-plugin/tests/rules/explicit-function-return-type.test.ts b/packages/eslint-plugin/tests/rules/explicit-function-return-type.test.ts
index eedbd9b76c7..8b0a05d6b5b 100644
--- a/packages/eslint-plugin/tests/rules/explicit-function-return-type.test.ts
+++ b/packages/eslint-plugin/tests/rules/explicit-function-return-type.test.ts
@@ -713,6 +713,26 @@ let foo = (() => (() => {})())();
         },
       ],
     },
+    {
+      code: `
+class Bar {
+  bar: Foo = {
+    foo: x => x + 1,
+  };
+}
+      `,
+    },
+    {
+      code: `
+class Bar {
+  bar: Foo[] = [
+    {
+      foo: x => x + 1,
+    },
+  ];
+}
+      `,
+    },
   ],
   invalid: [
     {
@@ -1651,6 +1671,26 @@ class Foo {
     },
     {
       code: `
+class Bar {
+  bar = [
+    {
+      foo: x => x + 1,
+    },
+  ];
+}
+      `,
+      errors: [
+        {
+          messageId: 'missingReturnType',
+          line: 5,
+          endLine: 5,
+          column: 7,
+          endColumn: 12,
+        },
+      ],
+    },
+    {
+      code: `
 const foo = (function () {
   return 'foo';
 })();