diff --git a/dbus-sdr/sdrutils.cpp b/dbus-sdr/sdrutils.cpp
index ede14bf..3df0dc1 100644
--- a/dbus-sdr/sdrutils.cpp
+++ b/dbus-sdr/sdrutils.cpp
@@ -93,6 +93,7 @@
     // Add sensors to SensorTree
     static constexpr const std::array sensorInterfaces = {
         "xyz.openbmc_project.Sensor.Value",
+        "xyz.openbmc_project.Sensor.ValueMutability",
         "xyz.openbmc_project.Sensor.Threshold.Warning",
         "xyz.openbmc_project.Sensor.Threshold.Critical"};
     static constexpr const std::array vrInterfaces = {
@@ -139,6 +140,7 @@
     sensorUpdatedIndex++;
     // The SDR is being regenerated, wipe the old stats
     sdrStatsTable.wipeTable();
+    sdrWriteTable.wipeTable();
     return sensorUpdatedIndex;
 }
 
diff --git a/dbus-sdr/sensorcommands.cpp b/dbus-sdr/sensorcommands.cpp
index 3cebeb0..854d55f 100644
--- a/dbus-sdr/sensorcommands.cpp
+++ b/dbus-sdr/sensorcommands.cpp
@@ -545,6 +545,12 @@
             return ipmi::responseResponseError();
         }
 
+        // Only allow external SetSensor if write permission granted
+        if (!details::sdrWriteTable.getWritePermission(sensorNumber))
+        {
+            return ipmi::responseResponseError();
+        }
+
         auto value =
             sensor::calculateValue(reading, sensorMap, sensorObject->second);
         if (!value)
@@ -1605,10 +1611,18 @@
     // Remember the sensor name, as determined for this sensor number
     details::sdrStatsTable.updateName(sensornumber, name);
 
-#ifdef FEATURE_DYNAMIC_SENSORS_WRITE
-    // Set the sensor settable state to true by default
-    get_sdr::body::init_settable_state(true, &record.body);
-#endif
+    bool sensorSettable = false;
+    auto mutability =
+        sensorMap.find("xyz.openbmc_project.Sensor.ValueMutability");
+    if (mutability != sensorMap.end())
+    {
+        sensorSettable =
+            mappedVariant<bool>(mutability->second, "Mutable", false);
+    }
+    get_sdr::body::init_settable_state(sensorSettable, &record.body);
+
+    // Grant write permission to sensors deemed externally settable
+    details::sdrWriteTable.setWritePermission(sensornumber, sensorSettable);
 
     IPMIThresholds thresholdData;
     try
@@ -2212,12 +2226,10 @@
                           ipmi::sensor_event::cmdPlatformEvent,
                           ipmi::Privilege::Operator, ipmiSenPlatformEvent);
 
-#ifdef FEATURE_DYNAMIC_SENSORS_WRITE
     // <Set Sensor Reading and Event Status>
     ipmi::registerHandler(ipmi::prioOpenBmcBase, ipmi::netFnSensor,
                           ipmi::sensor_event::cmdSetSensorReadingAndEvtSts,
                           ipmi::Privilege::Operator, ipmiSetSensorReading);
-#endif
 
     // <Get Sensor Reading>
     ipmi::registerHandler(ipmi::prioOpenBmcBase, ipmi::netFnSensor,