diff --git a/src/conditions.hpp b/src/conditions.hpp
new file mode 100644
index 0000000..54a6dc6
--- /dev/null
+++ b/src/conditions.hpp
@@ -0,0 +1,48 @@
+#pragma once
+
+#include <algorithm>
+#include "data_types.hpp"
+
+namespace phosphor
+{
+namespace dbus
+{
+namespace monitoring
+{
+namespace condition
+{
+
+template <typename T>
+auto countAtOrAbove(Group& items, const char* path, size_t count, T&& value)
+{
+    return [&items,
+            path,
+            count,
+            value = std::forward<T>(value)](T&& arg)
+    {
+        Group::iterator it =
+            std::find_if(items.begin(),
+                         items.end(),
+                         [&path](auto const& item)
+                         {
+                             return std::get<0>(item) == path;
+                         });
+        if (it != std::end(items))
+        {
+            std::get<1>(*it) = arg;
+        }
+        size_t condCount =
+            std::count_if(items.begin(),
+                          items.end(),
+                          [&value](auto const& item)
+                          {
+                              return std::get<1>(item) >= value;
+                          });
+        return condCount >= count;
+    };
+}
+
+} // namespace condition
+} // namespace monitoring
+} // namespace dbus
+} // namespace phosphor