diff --git a/src/Umbraco.Web.UI.Client/src/packages/block/block-grid/property-editors/block-grid-editor/property-editor-ui-block-grid.element.ts b/src/Umbraco.Web.UI.Client/src/packages/block/block-grid/property-editors/block-grid-editor/property-editor-ui-block-grid.element.ts
index 8ab27986e1..7b0ec0e6a5 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/block/block-grid/property-editors/block-grid-editor/property-editor-ui-block-grid.element.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/block/block-grid/property-editors/block-grid-editor/property-editor-ui-block-grid.element.ts
@@ -19,7 +19,11 @@ import type {
 } from '@umbraco-cms/backoffice/property-editor';
 import { jsonStringComparison, observeMultiple } from '@umbraco-cms/backoffice/observable-api';
 import { UMB_PROPERTY_CONTEXT, UMB_PROPERTY_DATASET_CONTEXT } from '@umbraco-cms/backoffice/property';
-import { UmbFormControlMixin, UmbValidationContext } from '@umbraco-cms/backoffice/validation';
+import {
+	UMB_VALIDATION_EMPTY_LOCALIZATION_KEY,
+	UmbFormControlMixin,
+	UmbValidationContext,
+} from '@umbraco-cms/backoffice/validation';
 import type { UmbBlockTypeGroup } from '@umbraco-cms/backoffice/block-type';
 import { debounceTime } from '@umbraco-cms/backoffice/external/rxjs';
 
@@ -77,6 +81,10 @@ export class UmbPropertyEditorUIBlockGridElement
 		return this.#readonly;
 	}
 	#readonly = false;
+	@property({ type: Boolean })
+	mandatory?: boolean;
+	@property({ type: String })
+	mandatoryMessage = UMB_VALIDATION_EMPTY_LOCALIZATION_KEY;
 
 	@state()
 	private _layoutColumns?: number;
@@ -112,6 +120,16 @@ export class UmbPropertyEditorUIBlockGridElement
 	constructor() {
 		super();
 
+		this.addValidator(
+			'valueMissing',
+			() => this.mandatoryMessage,
+			() => {
+				if (!this.mandatory || this.readonly) return false;
+				const count = this.value?.layout?.[UMB_BLOCK_GRID_PROPERTY_EDITOR_SCHEMA_ALIAS]?.length ?? 0;
+				return count === 0;
+			},
+		);
+
 		this.consumeContext(UMB_CONTENT_WORKSPACE_CONTEXT, (context) => {
 			if (context) {
 				this.observe(
diff --git a/src/Umbraco.Web.UI.Client/src/packages/code-editor/property-editor/property-editor-ui-code-editor.element.ts b/src/Umbraco.Web.UI.Client/src/packages/code-editor/property-editor/property-editor-ui-code-editor.element.ts
index 7d004f5693..50b68ae048 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/code-editor/property-editor/property-editor-ui-code-editor.element.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/code-editor/property-editor/property-editor-ui-code-editor.element.ts
@@ -9,11 +9,15 @@ import type {
 } from '@umbraco-cms/backoffice/property-editor';
 
 import '../components/code-editor.element.js';
+import { UMB_VALIDATION_EMPTY_LOCALIZATION_KEY, UmbFormControlMixin } from '@umbraco-cms/backoffice/validation';
 
 const elementName = 'umb-property-editor-ui-code-editor';
 
 @customElement(elementName)
-export class UmbPropertyEditorUICodeEditorElement extends UmbLitElement implements UmbPropertyEditorUiElement {
+export class UmbPropertyEditorUICodeEditorElement
+	extends UmbFormControlMixin<string, typeof UmbLitElement, undefined>(UmbLitElement)
+	implements UmbPropertyEditorUiElement
+{
 	#defaultLanguage: CodeEditorLanguage = 'javascript';
 
 	@state()
@@ -31,8 +35,9 @@ export class UmbPropertyEditorUICodeEditorElement extends UmbLitElement implemen
 	@state()
 	private _wordWrap = false;
 
-	@property()
-	value = '';
+	mandatory?: boolean;
+	@property({ type: String })
+	mandatoryMessage = UMB_VALIDATION_EMPTY_LOCALIZATION_KEY;
 
 	@property({ attribute: false })
 	public set config(config: UmbPropertyEditorConfigCollection | undefined) {
@@ -53,6 +58,16 @@ export class UmbPropertyEditorUICodeEditorElement extends UmbLitElement implemen
 		this.dispatchEvent(new UmbChangeEvent());
 	}
 
+	constructor() {
+		super();
+
+		this.addValidator(
+			'valueMissing',
+			() => this.mandatoryMessage,
+			() => !!this.mandatory && (!this.value || this.value.length === 0),
+		);
+	}
+
 	override render() {
 		return html`
 			<umb-code-editor
diff --git a/src/Umbraco.Web.UI.Client/src/packages/markdown-editor/components/input-markdown-editor/input-markdown.element.ts b/src/Umbraco.Web.UI.Client/src/packages/markdown-editor/components/input-markdown-editor/input-markdown.element.ts
index f116b6eea4..feec4065df 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/markdown-editor/components/input-markdown-editor/input-markdown.element.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/markdown-editor/components/input-markdown-editor/input-markdown.element.ts
@@ -21,7 +21,7 @@ import { UMB_MEDIA_PICKER_MODAL, UmbMediaUrlRepository } from '@umbraco-cms/back
 import { UmbCodeEditorLoadedEvent } from '@umbraco-cms/backoffice/code-editor';
 import type { UmbCodeEditorController, UmbCodeEditorElement } from '@umbraco-cms/backoffice/code-editor';
 import type { UUIModalSidebarSize } from '@umbraco-cms/backoffice/external/uui';
-import { UmbFormControlMixin } from '@umbraco-cms/backoffice/validation';
+import { UMB_VALIDATION_EMPTY_LOCALIZATION_KEY, UmbFormControlMixin } from '@umbraco-cms/backoffice/validation';
 import { sanitizeHTML } from '@umbraco-cms/backoffice/utils';
 
 interface UmbMarkdownEditorAction extends monaco.editor.IActionDescriptor {
@@ -63,6 +63,10 @@ export class UmbInputMarkdownElement extends UmbFormControlMixin<string, typeof
 		this.#editor?.monacoEditor?.updateOptions({ readOnly: this.#readonly });
 	}
 	#readonly = false;
+	@property({ type: Boolean })
+	required?: boolean;
+	@property({ type: String })
+	requiredMessage?: string;
 
 	#editor?: UmbCodeEditorController;
 
@@ -74,6 +78,16 @@ export class UmbInputMarkdownElement extends UmbFormControlMixin<string, typeof
 
 	#mediaUrlRepository = new UmbMediaUrlRepository(this);
 
+	constructor() {
+		super();
+
+		this.addValidator(
+			'valueMissing',
+			() => this.requiredMessage ?? UMB_VALIDATION_EMPTY_LOCALIZATION_KEY,
+			() => !this.readonly && !!this.required && (this.value === undefined || this.value === null || this.value === ''),
+		);
+	}
+
 	#onCodeEditorLoaded(event: UmbCodeEditorLoadedEvent) {
 		if (event.type !== UmbCodeEditorLoadedEvent.TYPE) return;
 
diff --git a/src/Umbraco.Web.UI.Client/src/packages/markdown-editor/property-editors/markdown-editor/property-editor-ui-markdown-editor.element.ts b/src/Umbraco.Web.UI.Client/src/packages/markdown-editor/property-editors/markdown-editor/property-editor-ui-markdown-editor.element.ts
index 2307159e45..ec4d19cdc7 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/markdown-editor/property-editors/markdown-editor/property-editor-ui-markdown-editor.element.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/markdown-editor/property-editors/markdown-editor/property-editor-ui-markdown-editor.element.ts
@@ -9,15 +9,16 @@ import type { UUIModalSidebarSize } from '@umbraco-cms/backoffice/external/uui';
 
 import '../../components/input-markdown-editor/index.js';
 import { UmbChangeEvent } from '@umbraco-cms/backoffice/event';
+import { UMB_VALIDATION_EMPTY_LOCALIZATION_KEY, UmbFormControlMixin } from '@umbraco-cms/backoffice/validation';
 
 /**
  * @element umb-property-editor-ui-markdown-editor
  */
 @customElement('umb-property-editor-ui-markdown-editor')
-export class UmbPropertyEditorUIMarkdownEditorElement extends UmbLitElement implements UmbPropertyEditorUiElement {
-	@property()
-	value?: string;
-
+export class UmbPropertyEditorUIMarkdownEditorElement
+	extends UmbFormControlMixin<string, typeof UmbLitElement>(UmbLitElement)
+	implements UmbPropertyEditorUiElement
+{
 	/**
 	 * Sets the input to readonly mode, meaning value cannot be changed but still able to read and select its content.
 	 * @type {boolean}
@@ -26,6 +27,14 @@ export class UmbPropertyEditorUIMarkdownEditorElement extends UmbLitElement impl
 	 */
 	@property({ type: Boolean, reflect: true })
 	readonly = false;
+	/**
+	 * Sets the input to mandatory, meaning validation will fail if the value is empty.
+	 * @type {boolean}
+	 */
+	@property({ type: Boolean })
+	mandatory?: boolean;
+	@property({ type: String })
+	mandatoryMessage = UMB_VALIDATION_EMPTY_LOCALIZATION_KEY;
 
 	@state()
 	private _preview?: boolean;
@@ -45,6 +54,10 @@ export class UmbPropertyEditorUIMarkdownEditorElement extends UmbLitElement impl
 		this.dispatchEvent(new UmbChangeEvent());
 	}
 
+	protected override firstUpdated() {
+		this.addFormControlElement(this.shadowRoot!.querySelector('umb-input-markdown')!);
+	}
+
 	override render() {
 		return html`
 			<umb-input-markdown
@@ -52,7 +65,9 @@ export class UmbPropertyEditorUIMarkdownEditorElement extends UmbLitElement impl
 				.overlaySize=${this._overlaySize}
 				?preview=${this._preview}
 				@change=${this.#onChange}
-				?readonly=${this.readonly}></umb-input-markdown>
+				?readonly=${this.readonly}
+				?required=${this.mandatory}
+				.requiredMessage=${this.mandatoryMessage}></umb-input-markdown>
 		`;
 	}
 }