diff --git a/services/api.ts b/services/api.ts
new file mode 100644
index 0000000..5d63cdd
--- /dev/null
+++ b/services/api.ts
@@ -0,0 +1,369 @@
+
+import { 
+  Condo, Family, Payment, AppSettings, User, AuthResponse, 
+  Ticket, TicketComment, ExtraordinaryExpense, Notice, 
+  AlertDefinition, NoticeRead 
+} from '../types';
+
+const API_URL = '/api';
+
+async function request<T>(endpoint: string, options: RequestInit = {}): Promise<T> {
+  const token = localStorage.getItem('condo_token');
+  const headers: HeadersInit = {
+    'Content-Type': 'application/json',
+    ...options.headers as any,
+  };
+
+  if (token) {
+    headers['Authorization'] = `Bearer ${token}`;
+  }
+
+  const response = await fetch(`${API_URL}${endpoint}`, {
+    ...options,
+    headers,
+  });
+
+  if (!response.ok) {
+    const errorText = await response.text();
+    throw new Error(errorText || response.statusText);
+  }
+
+  // Handle empty responses
+  const text = await response.text();
+  return text ? JSON.parse(text) : undefined;
+}
+
+export const CondoService = {
+  // Auth & User
+  login: async (email: string, password: string): Promise<void> => {
+      const data = await request<AuthResponse>('/auth/login', {
+          method: 'POST',
+          body: JSON.stringify({ email, password })
+      });
+      localStorage.setItem('condo_token', data.token);
+      localStorage.setItem('condo_user', JSON.stringify(data.user));
+  },
+
+  logout: () => {
+      localStorage.removeItem('condo_token');
+      localStorage.removeItem('condo_user');
+      window.location.href = '/#/login';
+  },
+
+  getCurrentUser: (): User | null => {
+      const u = localStorage.getItem('condo_user');
+      return u ? JSON.parse(u) : null;
+  },
+
+  updateProfile: async (data: any): Promise<void> => {
+      const res = await request<{success: boolean, user: User}>('/profile', {
+          method: 'PUT',
+          body: JSON.stringify(data)
+      });
+      if (res.user) {
+          localStorage.setItem('condo_user', JSON.stringify(res.user));
+      }
+  },
+
+  // Settings
+  getSettings: async (): Promise<AppSettings> => {
+      return request<AppSettings>('/settings');
+  },
+
+  updateSettings: async (settings: AppSettings): Promise<void> => {
+      return request('/settings', {
+          method: 'PUT',
+          body: JSON.stringify(settings)
+      });
+  },
+
+  testSmtpConfig: async (config: any): Promise<void> => {
+      return request('/settings/smtp-test', {
+          method: 'POST',
+          body: JSON.stringify(config)
+      });
+  },
+
+  getAvailableYears: async (): Promise<number[]> => {
+      return request<number[]>('/years');
+  },
+
+  // Condos
+  getCondos: async (): Promise<Condo[]> => {
+      return request<Condo[]>('/condos');
+  },
+
+  getActiveCondoId: (): string | undefined => {
+      return localStorage.getItem('active_condo_id') || undefined;
+  },
+
+  getActiveCondo: async (): Promise<Condo | undefined> => {
+      const id = localStorage.getItem('active_condo_id');
+      const condos = await CondoService.getCondos();
+      if (id) {
+          return condos.find(c => c.id === id);
+      }
+      return condos.length > 0 ? condos[0] : undefined;
+  },
+
+  setActiveCondo: (id: string) => {
+      localStorage.setItem('active_condo_id', id);
+      window.dispatchEvent(new Event('condo-updated'));
+      window.location.reload();
+  },
+
+  saveCondo: async (condo: Condo): Promise<Condo> => {
+      if (condo.id) {
+          await request(`/condos/${condo.id}`, {
+              method: 'PUT',
+              body: JSON.stringify(condo)
+          });
+          return condo;
+      } else {
+          return request<Condo>('/condos', {
+              method: 'POST',
+              body: JSON.stringify(condo)
+          });
+      }
+  },
+
+  deleteCondo: async (id: string): Promise<void> => {
+      return request(`/condos/${id}`, { method: 'DELETE' });
+  },
+
+  // Families
+  getFamilies: async (condoId?: string): Promise<Family[]> => {
+      let url = '/families';
+      const activeId = condoId || CondoService.getActiveCondoId();
+      if (activeId) url += `?condoId=${activeId}`;
+      return request<Family[]>(url);
+  },
+
+  addFamily: async (family: any): Promise<Family> => {
+       let activeId = CondoService.getActiveCondoId();
+       if (!activeId) {
+           const condos = await CondoService.getCondos();
+           if (condos.length > 0) activeId = condos[0].id;
+       }
+       return request<Family>('/families', {
+           method: 'POST',
+           body: JSON.stringify({ ...family, condoId: activeId })
+       });
+  },
+
+  updateFamily: async (family: Family): Promise<void> => {
+      return request(`/families/${family.id}`, {
+          method: 'PUT',
+          body: JSON.stringify(family)
+      });
+  },
+
+  deleteFamily: async (id: string): Promise<void> => {
+      return request(`/families/${id}`, { method: 'DELETE' });
+  },
+
+  // Payments
+  seedPayments: () => { /* No-op for real backend */ },
+
+  getPaymentsByFamily: async (familyId: string): Promise<Payment[]> => {
+      return request<Payment[]>(`/payments?familyId=${familyId}`);
+  },
+
+  getCondoPayments: async (condoId: string): Promise<Payment[]> => {
+      return request<Payment[]>(`/payments?condoId=${condoId}`);
+  },
+
+  addPayment: async (payment: any): Promise<Payment> => {
+      return request<Payment>('/payments', {
+          method: 'POST',
+          body: JSON.stringify(payment)
+      });
+  },
+
+  // Users
+  getUsers: async (condoId?: string): Promise<User[]> => {
+      let url = '/users';
+      if (condoId) url += `?condoId=${condoId}`;
+      return request<User[]>(url);
+  },
+
+  createUser: async (user: any): Promise<void> => {
+      return request('/users', {
+          method: 'POST',
+          body: JSON.stringify(user)
+      });
+  },
+
+  updateUser: async (id: string, user: any): Promise<void> => {
+      return request(`/users/${id}`, {
+          method: 'PUT',
+          body: JSON.stringify(user)
+      });
+  },
+
+  deleteUser: async (id: string): Promise<void> => {
+      return request(`/users/${id}`, { method: 'DELETE' });
+  },
+
+  // Alerts
+  getAlerts: async (condoId?: string): Promise<AlertDefinition[]> => {
+      let url = '/alerts';
+      if (condoId) url += `?condoId=${condoId}`;
+      return request<AlertDefinition[]>(url);
+  },
+
+  saveAlert: async (alert: AlertDefinition): Promise<AlertDefinition> => {
+      let activeId = CondoService.getActiveCondoId();
+      if (!activeId) {
+          const condos = await CondoService.getCondos();
+          if (condos.length > 0) activeId = condos[0].id;
+      }
+      if (alert.id) {
+          await request(`/alerts/${alert.id}`, { method: 'PUT', body: JSON.stringify(alert) });
+          return alert;
+      } else {
+          return request('/alerts', { 
+              method: 'POST', 
+              body: JSON.stringify({ ...alert, condoId: activeId }) 
+          });
+      }
+  },
+
+  deleteAlert: async (id: string): Promise<void> => {
+      return request(`/alerts/${id}`, { method: 'DELETE' });
+  },
+
+  // Notices
+  getNotices: async (condoId?: string): Promise<Notice[]> => {
+       let url = '/notices';
+       const activeId = CondoService.getActiveCondoId();
+       if (activeId) url += `?condoId=${activeId}`;
+       return request<Notice[]>(url);
+  },
+
+  getUnreadNoticesForUser: async (userId: string, condoId: string): Promise<Notice[]> => {
+       return request<Notice[]>(`/notices/unread?userId=${userId}&condoId=${condoId}`);
+  },
+
+  getNoticeReadStatus: async (noticeId: string): Promise<NoticeRead[]> => {
+      return request<NoticeRead[]>(`/notices/${noticeId}/read-status`);
+  },
+
+  markNoticeAsRead: async (noticeId: string, userId: string): Promise<void> => {
+      return request(`/notices/${noticeId}/read`, {
+          method: 'POST',
+          body: JSON.stringify({ userId })
+      });
+  },
+
+  saveNotice: async (notice: Notice): Promise<void> => {
+       if (notice.id) {
+           return request(`/notices/${notice.id}`, { method: 'PUT', body: JSON.stringify(notice) });
+       } else {
+           return request('/notices', { method: 'POST', body: JSON.stringify(notice) });
+       }
+  },
+
+  deleteNotice: async (id: string): Promise<void> => {
+      return request(`/notices/${id}`, { method: 'DELETE' });
+  },
+
+  // Tickets
+  getTickets: async (): Promise<Ticket[]> => {
+      const activeId = CondoService.getActiveCondoId();
+      return request<Ticket[]>(`/tickets?condoId=${activeId}`);
+  },
+
+  createTicket: async (data: any): Promise<void> => {
+      let activeId = CondoService.getActiveCondoId();
+      // Robustness: If no activeId (e.g. standard user), fetch condos and use the first one
+      if (!activeId) {
+          const condos = await CondoService.getCondos();
+          if (condos.length > 0) activeId = condos[0].id;
+      }
+      return request('/tickets', {
+          method: 'POST',
+          body: JSON.stringify({ ...data, condoId: activeId })
+      });
+  },
+
+  updateTicket: async (id: string, data: any): Promise<void> => {
+      return request(`/tickets/${id}`, {
+          method: 'PUT',
+          body: JSON.stringify(data)
+      });
+  },
+
+  deleteTicket: async (id: string): Promise<void> => {
+      return request(`/tickets/${id}`, { method: 'DELETE' });
+  },
+
+  getTicketComments: async (ticketId: string): Promise<TicketComment[]> => {
+      return request<TicketComment[]>(`/tickets/${ticketId}/comments`);
+  },
+
+  addTicketComment: async (ticketId: string, text: string): Promise<void> => {
+      return request(`/tickets/${ticketId}/comments`, {
+          method: 'POST',
+          body: JSON.stringify({ text })
+      });
+  },
+
+  getTicketAttachment: async (ticketId: string, attachmentId: string): Promise<any> => {
+      return request(`/tickets/${ticketId}/attachments/${attachmentId}`);
+  },
+
+  // Extraordinary Expenses
+  getExpenses: async (condoId?: string): Promise<ExtraordinaryExpense[]> => {
+      let url = '/expenses';
+      const activeId = condoId || CondoService.getActiveCondoId();
+      if (activeId) url += `?condoId=${activeId}`;
+      return request<ExtraordinaryExpense[]>(url);
+  },
+
+  getExpenseDetails: async (id: string): Promise<ExtraordinaryExpense> => {
+      return request<ExtraordinaryExpense>(`/expenses/${id}`);
+  },
+
+  createExpense: async (data: any): Promise<void> => {
+      let activeId = CondoService.getActiveCondoId();
+      if (!activeId) {
+          const condos = await CondoService.getCondos();
+          if (condos.length > 0) activeId = condos[0].id;
+      }
+      if (!activeId) throw new Error("No active condo");
+      return request('/expenses', {
+          method: 'POST',
+          body: JSON.stringify({ ...data, condoId: activeId })
+      });
+  },
+
+  updateExpense: async (id: string, data: any): Promise<void> => {
+      return request(`/expenses/${id}`, {
+          method: 'PUT',
+          body: JSON.stringify(data)
+      });
+  },
+
+  deleteExpense: async (id: string): Promise<void> => {
+      return request(`/expenses/${id}`, {
+          method: 'DELETE'
+      });
+  },
+
+  getExpenseAttachment: async (expenseId: string, attachmentId: string): Promise<any> => {
+      return request(`/expenses/${expenseId}/attachments/${attachmentId}`);
+  },
+
+  getMyExpenses: async (): Promise<any[]> => {
+      const activeId = CondoService.getActiveCondoId();
+      return request(`/my-expenses?condoId=${activeId}`);
+  },
+
+  payExpense: async (expenseId: string, amount: number): Promise<void> => {
+      return request(`/expenses/${expenseId}/pay`, {
+          method: 'POST',
+          body: JSON.stringify({ amount, notes: 'PayPal Payment' })
+      });
+  }
+};