diff --git a/phosphor-power-supply/power_supply.hpp b/phosphor-power-supply/power_supply.hpp
index 3bfa77a..e5c1e76 100644
--- a/phosphor-power-supply/power_supply.hpp
+++ b/phosphor-power-supply/power_supply.hpp
@@ -1,5 +1,9 @@
 #pragma once
 
+#include "types.hpp"
+
+#include <sdbusplus/bus/match.hpp>
+
 namespace phosphor::power::psu
 {
 /**
@@ -9,7 +13,7 @@
 class PowerSupply
 {
   public:
-    PowerSupply();
+    PowerSupply() = delete;
     PowerSupply(const PowerSupply&) = delete;
     PowerSupply(PowerSupply&&) = delete;
     PowerSupply& operator=(const PowerSupply&) = delete;
@@ -17,6 +21,28 @@
     ~PowerSupply() = default;
 
     /**
+     * @param[in] invpath - string for inventory path to use
+     */
+    PowerSupply(sdbusplus::bus::bus& bus, const std::string& invpath) :
+        bus(bus), inventoryPath(invpath)
+    {
+        // Setup the functions to call when the D-Bus inventory path for the
+        // Present property changes.
+        presentMatch = std::make_unique<sdbusplus::bus::match_t>(
+            bus,
+            sdbusplus::bus::match::rules::propertiesChanged(inventoryPath,
+                                                            INVENTORY_IFACE),
+            [this](auto& msg) { this->inventoryChanged(msg); });
+        presentAddedMatch = std::make_unique<sdbusplus::bus::match_t>(
+            bus,
+            sdbusplus::bus::match::rules::interfacesAdded() +
+                sdbusplus::bus::match::rules::path_namespace(inventoryPath),
+            [this](auto& msg) { this->inventoryChanged(msg); });
+        // Get the current state of the Present property.
+        updatePresence();
+    }
+
+    /**
      * Power supply specific function to analyze for faults/errors.
      *
      * Various PMBus status bits will be checked for fault conditions.
@@ -58,9 +84,56 @@
     {
     }
 
+    /**
+     * @brief Accessor function to indicate present status
+     */
+    bool isPresent() const
+    {
+        return present;
+    }
+
   private:
+    /** @brief systemd bus member */
+    sdbusplus::bus::bus& bus;
+
     /** @brief True if a fault has already been found and not cleared */
     bool faultFound = false;
+
+    /**
+     * @brief D-Bus path to use for this power supply's inventory status.
+     **/
+    std::string inventoryPath;
+
+    /** @brief True if the power supply is present. */
+    bool present = false;
+
+    /** @brief D-Bus match variable used to subscribe to Present property
+     * changes.
+     **/
+    std::unique_ptr<sdbusplus::bus::match_t> presentMatch;
+
+    /** @brief D-Bus match variable used to subscribe for Present property
+     * interface added.
+     */
+    std::unique_ptr<sdbusplus::bus::match_t> presentAddedMatch;
+
+    /**
+     *  @brief Updates the presence status by querying D-Bus
+     *
+     * The D-Bus inventory properties for this power supply will be read to
+     * determine if the power supply is present or not and update this
+     * object's present member variable to reflect current status.
+     **/
+    void updatePresence();
+
+    /**
+     * @brief Callback for inventory property changes
+     *
+     * Process change of Present property for power supply.
+     *
+     * @param[in]  msg - Data associated with Present change signal
+     **/
+    void inventoryChanged(sdbusplus::message::message& msg);
 };
 
 } // namespace phosphor::power::psu