diff --git a/src/persistence/supabase/area-repo.ts b/src/persistence/supabase/area-repo.ts
new file mode 100644
index 0000000..86910c2
--- /dev/null
+++ b/src/persistence/supabase/area-repo.ts
@@ -0,0 +1,59 @@
+import { supabase } from '@/lib/supabase'
+import type { Area } from '@/domain/types'
+
+function fromRow(row: Record<string, unknown>): Area {
+  return {
+    id: row.id as string,
+    orgId: row.org_id as string,
+    name: row.name as string,
+    description: (row.description as string | null) ?? null,
+    createdAt: new Date(row.created_at as string).getTime(),
+  }
+}
+
+export const supabaseAreaRepo = {
+  async getByOrg(orgId: string): Promise<Area[]> {
+    const { data, error } = await supabase
+      .from('areas')
+      .select('*')
+      .eq('org_id', orgId)
+      .order('name', { ascending: true })
+    if (error) throw error
+    return (data ?? []).map(fromRow)
+  },
+
+  async create(data: { orgId: string; name: string; description?: string }): Promise<Area> {
+    const { data: row, error } = await supabase
+      .from('areas')
+      .insert({
+        org_id: data.orgId,
+        name: data.name,
+        description: data.description ?? null,
+      })
+      .select('*')
+      .single()
+    if (error) throw error
+    return fromRow(row as Record<string, unknown>)
+  },
+
+  async update(id: string, data: { name?: string; description?: string }): Promise<Area> {
+    const { data: row, error } = await supabase
+      .from('areas')
+      .update({
+        ...(data.name !== undefined && { name: data.name }),
+        ...(data.description !== undefined && { description: data.description }),
+        updated_at: new Date().toISOString(),
+      })
+      .eq('id', id)
+      .select('*')
+      .single()
+    if (error) throw error
+    return fromRow(row as Record<string, unknown>)
+  },
+
+  // Los procesos con esta área pasan a area_id = null (ON DELETE SET NULL en migración 017)
+  async delete(id: string): Promise<void> {
+    const { error } = await supabase.from('areas').delete().eq('id', id)
+    if (error) throw error
+  },
+}