diff --git a/Roomie/Roomie/Global/Enums/AlertType.swift b/Roomie/Roomie/Global/Enums/AlertType.swift
deleted file mode 100644
index d46233d..0000000
--- a/Roomie/Roomie/Global/Enums/AlertType.swift
+++ /dev/null
@@ -1,47 +0,0 @@
-//
-//  AlertType.swift
-//  Roomie
-//
-//  Created by 김승원 on 7/4/25.
-//
-
-import Foundation
-
-enum AlertType {
-    case logout
-    case signout
-    
-    var title: String {
-        switch self {
-        case .logout:
-            return "로그아웃 하시겠어요?"
-        case .signout:
-            return "정말 탈퇴하시겠어요?"
-        }
-    }
-    
-    var message: String {
-        switch self {
-        case .logout:
-            return "로그아웃 시, 다시 로그인해야 앱을 사용할 수 있어요."
-        case .signout:
-            return "탈퇴 시, 모든 정보가 삭제되며 복구할 수 없어요."
-        }
-    }
-    
-    var isCancelButtonEnabled: Bool {
-        switch self {
-        case .logout, .signout:
-            return true
-        }
-    }
-    
-    var isDestructiveButtonEnabled: Bool {
-        switch self {
-        case .logout:
-            return false
-        case .signout:
-            return true
-        }
-    }
-}
diff --git a/Roomie/Roomie/Global/Utils/AlertBuilder.swift b/Roomie/Roomie/Global/Utils/AlertBuilder.swift
new file mode 100644
index 0000000..d692e6f
--- /dev/null
+++ b/Roomie/Roomie/Global/Utils/AlertBuilder.swift
@@ -0,0 +1,186 @@
+//
+//  AlertBuilder.swift
+//  Roomie
+//
+//  Created by 김승원 on 7/22/25.
+//
+
+import UIKit
+
+final class AlertBuilder {
+    
+    // MARK: - Properties
+    
+    private let baseViewController: UIViewController
+    private let alertViewController = RoomieAlertViewController()
+    
+    private var alertTitle: String?
+    private var confirmAction: AlertAction?
+    private var cancelAction: AlertAction?
+    
+    // MARK: - Initializer
+    
+    init(viewController: UIViewController) {
+        self.baseViewController = viewController
+    }
+    
+    // MARK: - Functions
+    
+    func setTitle(_ alertTitle: String) -> AlertBuilder {
+        self.alertTitle = alertTitle
+        return self
+    }
+    
+    func setConfirmAction(_ text: String, action: (() -> Void)? = nil) -> AlertBuilder {
+        self.confirmAction = AlertAction(text: text, action: action)
+        return self
+    }
+    
+    func setCancelAction(_ text: String, action: (() -> Void)? = nil) -> AlertBuilder {
+        self.cancelAction = AlertAction(text: text, action: action)
+        return self
+    }
+    
+    @discardableResult
+    func build() -> Self {
+        alertViewController.modalPresentationStyle = .overFullScreen
+        alertViewController.modalTransitionStyle = .crossDissolve
+        
+        alertViewController.alertTitle = alertTitle
+        alertViewController.confirmAction = confirmAction
+        alertViewController.cancelAction = cancelAction
+        
+        baseViewController.present(alertViewController, animated: true)
+        return self
+    }
+}
+
+// MARK: - RoomieAlertViewController
+
+final class RoomieAlertViewController: UIViewController {
+    
+    var alertTitle: String?
+    var confirmAction: AlertAction?
+    var cancelAction: AlertAction?
+    
+    private let alertContainer = UIView()
+    private let alertTitleLabel = UILabel()
+    private let confirmButton = UIButton()
+    private let cancelButton = UIButton()
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        setStyle()
+        setUI()
+        setLayout()
+        setAction()
+    }
+    
+    private func setStyle() {
+        view.do {
+            $0.backgroundColor = .transpGray1260
+        }
+        
+        alertContainer.do {
+            $0.backgroundColor = .grayscale1
+            $0.layer.cornerRadius = 8
+            $0.layer.masksToBounds = true
+        }
+        
+        alertTitleLabel.do {
+            $0.setText(alertTitle ?? " ", style: .body6, color: .grayscale12)
+            $0.numberOfLines = 0
+        }
+        
+        confirmButton.do {
+            $0.setTitle(confirmAction?.text ?? " ", style: .body5, color: .grayscale1)
+            
+            var configuration = UIButton.Configuration.filled()
+            configuration.baseBackgroundColor = .primaryPurple
+            configuration.baseForegroundColor = .grayscale1
+            configuration.contentInsets = NSDirectionalEdgeInsets(
+                top: Screen.height(8),
+                leading: Screen.width(16),
+                bottom: Screen.height(8),
+                trailing: Screen.width(16)
+            )
+            configuration.cornerStyle = .fixed
+            configuration.background.cornerRadius = 6
+            
+            $0.configuration = configuration
+        }
+        
+        cancelButton.do {
+            $0.setTitle(cancelAction?.text ?? " ", style: .body5, color: .grayscale12)
+            
+            var configuration = UIButton.Configuration.filled()
+            configuration.baseBackgroundColor = .grayscale4
+            configuration.baseForegroundColor = .grayscale12
+            configuration.contentInsets = NSDirectionalEdgeInsets(
+                top: Screen.height(8),
+                leading: Screen.width(16),
+                bottom: Screen.height(8),
+                trailing: Screen.width(16)
+            )
+            configuration.cornerStyle = .fixed
+            configuration.background.cornerRadius = 6
+            
+            $0.configuration = configuration
+        }
+    }
+    
+    private func setUI() {
+        view.addSubview(alertContainer)
+        alertContainer.addSubviews(
+            alertTitleLabel,
+            confirmButton,
+            cancelButton
+        )
+    }
+    
+    private func setLayout() {
+        alertContainer.snp.makeConstraints {
+            $0.center.equalToSuperview()
+            $0.width.equalTo(Screen.width(257))
+            $0.height.greaterThanOrEqualTo(Screen.height(108))
+        }
+        
+        alertTitleLabel.snp.makeConstraints {
+            $0.top.equalToSuperview().inset(Screen.height(14))
+            $0.horizontalEdges.equalToSuperview().inset(Screen.width(16))
+        }
+        
+        confirmButton.snp.makeConstraints {
+            $0.trailing.equalToSuperview().inset(Screen.width(16))
+            $0.bottom.equalToSuperview().inset(Screen.height(14))
+            $0.height.equalTo(Screen.height(34))
+        }
+        
+        cancelButton.snp.makeConstraints {
+            $0.trailing.equalTo(confirmButton.snp.leading).offset(-Screen.width(6))
+            $0.bottom.equalToSuperview().inset(Screen.height(14))
+            $0.height.equalTo(Screen.height(34))
+            $0.top.greaterThanOrEqualTo(alertTitleLabel.snp.bottom).offset(Screen.height(28)).priority(.medium)
+            $0.top.greaterThanOrEqualTo(alertTitleLabel.snp.bottom).offset(Screen.height(22)).priority(.high)
+        }
+    }
+    
+    private func setAction() {
+        confirmButton.addTarget(self, action: #selector(alertButtonDidTap), for: .touchUpInside)
+        cancelButton.addTarget(self, action: #selector(alertButtonDidTap), for: .touchUpInside)
+    }
+    
+    @objc
+    private func alertButtonDidTap(_ sender: UIButton) {
+        sender == confirmButton ? confirmAction?.action?() : cancelAction?.action?()
+        dismiss(animated: true)
+    }
+}
+
+// MARK: - AlertAction
+
+struct AlertAction {
+    var text: String
+    var action: (() -> Void)?
+}
diff --git a/Roomie/Roomie/Global/Utils/AlertManager.swift b/Roomie/Roomie/Global/Utils/AlertManager.swift
deleted file mode 100644
index d009acb..0000000
--- a/Roomie/Roomie/Global/Utils/AlertManager.swift
+++ /dev/null
@@ -1,43 +0,0 @@
-//
-//  AlertManager.swift
-//  Roomie
-//
-//  Created by 김승원 on 7/4/25.
-//
-
-import UIKit
-
-final class AlertManager {
-    
-    static let shared = AlertManager()
-    private init() { }
-    
-    /// 화면에 알림을 표시합니다
-    /// - Parameters:
-    ///   - viewController: 알림 표시 대상 UIViewcontroller 인스턴스
-    ///   - alertType: Alert타입
-    ///   - confirmHandler: 확인 버튼 후 실행할 클로저
-    func showAlert(
-        on viewController: UIViewController,
-        alertType: AlertType,
-        confirmHandler: ((UIAlertAction) -> Void)? = nil
-    ) {
-        DispatchQueue.main.async {
-            let alert = UIAlertController(title: alertType.title, message: alertType.message, preferredStyle: .alert)
-            
-            let confirmAction = UIAlertAction(
-                title: "확인",
-                style: alertType.isDestructiveButtonEnabled ? .destructive : .default,
-                handler: confirmHandler
-            )
-            alert.addAction(confirmAction)
-            
-            if alertType.isCancelButtonEnabled {
-                let cancelAction = UIAlertAction(title: "취소", style: .cancel, handler: nil)
-                alert.addAction(cancelAction)
-            }
-            
-            viewController.present(alert, animated: true, completion: nil)
-        }
-    }
-}
diff --git a/Roomie/Roomie/Presentation/MyAccount/ViewController/MyAccountViewController.swift b/Roomie/Roomie/Presentation/MyAccount/ViewController/MyAccountViewController.swift
index 28cd3fa..46b0f27 100644
--- a/Roomie/Roomie/Presentation/MyAccount/ViewController/MyAccountViewController.swift
+++ b/Roomie/Roomie/Presentation/MyAccount/ViewController/MyAccountViewController.swift
@@ -126,12 +126,14 @@ final class MyAccountViewController: BaseViewController {
             .tapPublisher
             .sink { [weak self] in
                 guard let self else { return }
-                AlertManager.shared.showAlert(
-                    on: self,
-                    alertType: .logout
-                ) { _ in
-                    self.logoutButtonDidTapSubject.send()
-                }
+                
+                AlertBuilder(viewController: self)
+                    .setTitle("로그아웃 하시겠습니까?")
+                    .setConfirmAction("확인") {
+                        self.logoutButtonDidTapSubject.send()
+                    }
+                    .setCancelAction("취소")
+                    .build()
             }
             .store(in: cancelBag)
         
@@ -139,12 +141,14 @@ final class MyAccountViewController: BaseViewController {
             .tapPublisher
             .sink { [weak self] in
                 guard let self else { return }
-                AlertManager.shared.showAlert(
-                    on: self,
-                    alertType: .signout
-                ) { _ in
-                    self.signoutButtonDidTapSubject.send()
-                }
+                
+                AlertBuilder(viewController: self)
+                    .setTitle("회원 탈퇴 시, 고미와 찾았던\n셰어하우스는 모두 사라져요")
+                    .setConfirmAction("유지하기")
+                    .setCancelAction("탈퇴하기") {
+                        self.signoutButtonDidTapSubject.send()
+                    }
+                    .build()
             }
             .store(in: cancelBag)
     }