diff --git a/lib/rules/no-useless-escape.js b/lib/rules/no-useless-escape.js
index 480b51597..3e8cdbaf1 100644
--- a/lib/rules/no-useless-escape.js
+++ b/lib/rules/no-useless-escape.js
@@ -95,6 +95,14 @@ module.exports = {
 						},
 						uniqueItems: true,
 					},
+					extra: {
+						type: "string",
+						default: ""
+					},
+					extraCharClass: {
+						type: "string",
+						default: ""
+					}
 				},
 				additionalProperties: false,
 			},
@@ -102,10 +110,15 @@ module.exports = {
 	},

 	create(context) {
+		const options = context.options[0] || {};
+		const { extra, extraCharClass } = options;
 		const sourceCode = context.sourceCode;
 		const [{ allowRegexCharacters }] = context.options;
 		const parser = new RegExpParser();

+		const NON_CHARCLASS_ESCAPES = union(REGEX_NON_CHARCLASS_ESCAPES, new Set(extra));
+		const CHARCLASS_ESCAPES = union(REGEX_GENERAL_ESCAPES, new Set(extraCharClass));
+
 		/**
 		 * Reports a node
 		 * @param {ASTNode} node The node to report
@@ -145,16 +158,16 @@ module.exports = {
 					...(disableEscapeBackslashSuggest
 						? []
 						: [
-								{
-									messageId: "escapeBackslash",
-									fix(fixer) {
-										return fixer.insertTextBeforeRange(
-											range,
-											"\\",
-										);
-									},
+							{
+								messageId: "escapeBackslash",
+								fix(fixer) {
+									return fixer.insertTextBeforeRange(
+										range,
+										"\\",
+									);
 								},
-							]),
+							},
+						]),
 				],
 			});
 		}
@@ -238,7 +251,7 @@ module.exports = {

 					if (
 						escapedChar !==
-							String.fromCodePoint(characterNode.value) ||
+						String.fromCodePoint(characterNode.value) ||
 						allowRegexCharacters.includes(escapedChar)
 					) {
 						// It's a valid escape.
@@ -247,11 +260,9 @@ module.exports = {
 					let allowedEscapes;

 					if (characterClassStack.length) {
-						allowedEscapes = unicodeSets
-							? REGEX_CLASSSET_CHARACTER_ESCAPES
-							: REGEX_GENERAL_ESCAPES;
+						allowedEscapes = unicodeSets ? REGEX_CLASSSET_CHARACTER_ESCAPES : CHARCLASS_ESCAPES;
 					} else {
-						allowedEscapes = REGEX_NON_CHARCLASS_ESCAPES;
+						allowedEscapes = NON_CHARCLASS_ESCAPES;
 					}
 					if (allowedEscapes.has(escapedChar)) {
 						return;
@@ -287,9 +298,9 @@ module.exports = {
 								 */
 								if (
 									characterClassNode.start + 1 !==
-										characterNode.start &&
+									characterNode.start &&
 									characterNode.end !==
-										characterClassNode.end - 1
+									characterClassNode.end - 1
 								) {
 									return;
 								}
@@ -334,7 +345,7 @@ module.exports = {

 							if (
 								characterNode.parent.type ===
-									"ClassIntersection" ||
+								"ClassIntersection" ||
 								characterNode.parent.type === "ClassSubtraction"
 							) {
 								disableEscapeBackslashSuggest = true;