diff --git a/control/json/actions/request_target_base.cpp b/control/json/actions/request_target_base.cpp
new file mode 100644
index 0000000..2de3e46
--- /dev/null
+++ b/control/json/actions/request_target_base.cpp
@@ -0,0 +1,92 @@
+/**
+ * Copyright © 2021 IBM Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "request_target_base.hpp"
+
+#include "../manager.hpp"
+#include "../zone.hpp"
+#include "group.hpp"
+
+#include <fmt/format.h>
+
+#include <nlohmann/json.hpp>
+#include <phosphor-logging/log.hpp>
+
+#include <algorithm>
+
+namespace phosphor::fan::control::json
+{
+
+using json = nlohmann::json;
+using namespace phosphor::logging;
+
+RequestTargetBase::RequestTargetBase(const json&) :
+    ActionBase(RequestTargetBase::name)
+{
+    // There are no JSON configuration parameters for this action
+}
+
+void RequestTargetBase::run(Zone& zone, const Group& group)
+{
+    uint64_t base = 0;
+    for (const auto& member : group.getMembers())
+    {
+        try
+        {
+            auto value = Manager::getObjValueVariant(
+                member, group.getInterface(), group.getProperty());
+            if (auto intPtr = std::get_if<int64_t>(&value))
+            {
+                // Throw out any negative values as those are not valid
+                // to use as a fan target base
+                if (*intPtr < 0)
+                {
+                    continue;
+                }
+                base = std::max(base, static_cast<uint64_t>(*intPtr));
+            }
+            else if (auto dblPtr = std::get_if<double>(&value))
+            {
+                // Throw out any negative values as those are not valid
+                // to use as a fan target base
+                if (*dblPtr < 0)
+                {
+                    continue;
+                }
+                // Precision of a double not a concern with fan targets
+                base = std::max(base, static_cast<uint64_t>(*dblPtr));
+            }
+            else
+            {
+                // Unsupported group member type for this action
+                log<level::ERR>(
+                    fmt::format("Action {}: Unsupported group member type "
+                                "given. [object = {} : {} : {}]",
+                                getName(), member, group.getInterface(),
+                                group.getProperty())
+                        .c_str());
+            }
+        }
+        catch (const std::out_of_range& oore)
+        {
+            // Property value not found, base request target unchanged
+        }
+    }
+
+    // A request target base of 0 defaults to the current target
+    zone.setRequestTargetBase(base);
+}
+
+} // namespace phosphor::fan::control::json
diff --git a/control/json/actions/request_target_base.hpp b/control/json/actions/request_target_base.hpp
new file mode 100644
index 0000000..6285dc5
--- /dev/null
+++ b/control/json/actions/request_target_base.hpp
@@ -0,0 +1,75 @@
+/**
+ * Copyright © 2021 IBM Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include "../zone.hpp"
+#include "action.hpp"
+#include "group.hpp"
+
+#include <nlohmann/json.hpp>
+
+namespace phosphor::fan::control::json
+{
+
+using json = nlohmann::json;
+
+/**
+ * @class RequestTargetBase - Action to set the requested target base
+ *
+ * Sets the base of a calculated requested target to the maximum value found
+ * from the properties given within a group. The requested target base is what
+ * the calculated requested target should be determined from when changing fan
+ * targets. By default, the base of the next calculated requested target is the
+ * current target of the zone. This action allows that base to be changed
+ * according to the maximum value found from a given group of dbus objects.
+ */
+class RequestTargetBase :
+    public ActionBase,
+    public ActionRegister<RequestTargetBase>
+{
+  public:
+    /* Name of this action */
+    static constexpr auto name = "set_request_speed_base_with_max";
+
+    RequestTargetBase() = delete;
+    RequestTargetBase(const RequestTargetBase&) = delete;
+    RequestTargetBase(RequestTargetBase&&) = delete;
+    RequestTargetBase& operator=(const RequestTargetBase&) = delete;
+    RequestTargetBase& operator=(RequestTargetBase&&) = delete;
+    ~RequestTargetBase() = default;
+
+    /**
+     * @brief Update the requested target base
+     *
+     * No JSON configuration parameters required
+     */
+    explicit RequestTargetBase(const json&);
+
+    /**
+     * @brief Run the action
+     *
+     * Determines the maximum value from the properties of the group of dbus
+     * objects and sets the requested target base to this value. Only positive
+     * integer or floating point types are supported as these are the only
+     * valid types for a fan target to be based off of.
+     *
+     * @param[in] zone - Zone to run the action on
+     * @param[in] group - Group of dbus objects the action runs against
+     */
+    void run(Zone& zone, const Group& group) override;
+};
+
+} // namespace phosphor::fan::control::json
diff --git a/control/json/manager.cpp b/control/json/manager.cpp
index 0cbb9d7..3508307 100644
--- a/control/json/manager.cpp
+++ b/control/json/manager.cpp
@@ -39,6 +39,9 @@
 std::map<std::string,
          std::map<std::pair<std::string, bool>, std::vector<std::string>>>
     Manager::_servTree;
+std::map<std::string,
+         std::map<std::string, std::map<std::string, PropertyVariantType>>>
+    Manager::_objects;
 
 Manager::Manager(sdbusplus::bus::bus& bus, const sdeventplus::Event& event) :
     _bus(bus), _event(event)
diff --git a/control/json/manager.hpp b/control/json/manager.hpp
index 8919b63..eeedfd3 100644
--- a/control/json/manager.hpp
+++ b/control/json/manager.hpp
@@ -146,6 +146,22 @@
     static bool hasOwner(const std::string& path, const std::string& intf);
 
     /**
+     * @brief Get the object's property value as a variant
+     *
+     * @param[in] path - Path of the object containing the property
+     * @param[in] intf - Interface name containing the property
+     * @param[in] prop - Name of property
+     *
+     * @return - The object's property value as a variant
+     */
+    static inline auto getObjValueVariant(const std::string& path,
+                                          const std::string& intf,
+                                          const std::string& prop)
+    {
+        return _objects.at(path).at(intf).at(prop);
+    };
+
+    /**
      * @brief Get the configured power on delay(OPTIONAL)
      *
      * @return Power on delay in seconds
@@ -181,6 +197,12 @@
                                           std::vector<std::string>>>
         _servTree;
 
+    /* Object map of paths to interfaces of properties and their values */
+    static std::map<
+        std::string,
+        std::map<std::string, std::map<std::string, PropertyVariantType>>>
+        _objects;
+
     /* List of zones configured */
     std::map<configKey, std::unique_ptr<Zone>> _zones;
 
diff --git a/control/json/zone.hpp b/control/json/zone.hpp
index 56fb855..8bf132c 100644
--- a/control/json/zone.hpp
+++ b/control/json/zone.hpp
@@ -189,6 +189,17 @@
     void requestIncrease(uint64_t targetDelta);
 
     /**
+     * @brief Set the requested target base to be used as the target to base a
+     * new requested target from
+     *
+     * @param[in] targetBase - Base target value to use
+     */
+    inline void setRequestTargetBase(uint64_t targetBase)
+    {
+        _requestTargetBase = targetBase;
+    };
+
+    /**
      * @brief Set a property to be persisted
      *
      * @param[in] intf - Interface containing property