diff --git a/src/core/config/mod.rs b/src/core/config/mod.rs
index a642f5b7..6578276a 100644
--- a/src/core/config/mod.rs
+++ b/src/core/config/mod.rs
@@ -603,6 +603,14 @@ pub struct Config {
 	#[serde(default)]
 	pub suspend_on_register: bool,
 
+	/// Enable space permission cascading (power levels and role-based access).
+	/// When enabled, power levels cascade from Spaces to child rooms and rooms
+	/// can require roles for access. Applies to all Spaces on this server.
+	///
+	/// default: false
+	#[serde(default)]
+	pub space_permission_cascading: bool,
+
 	/// Enabling this setting opens registration to anyone without restrictions.
 	/// This makes your server vulnerable to abuse
 	#[serde(default)]