diff --git a/esphome/components/esp32/__init__.py b/esphome/components/esp32/__init__.py
index 50d6d229f9..db40449eb3 100644
--- a/esphome/components/esp32/__init__.py
+++ b/esphome/components/esp32/__init__.py
@@ -32,6 +32,7 @@ from esphome.const import (
     TYPE_GIT,
     TYPE_LOCAL,
     __version__,
+    CONF_PLATFORM_VERSION,
 )
 from esphome.core import CORE, HexInt, TimePeriod
 import esphome.config_validation as cv
@@ -356,8 +357,6 @@ def final_validate(config):
     return config
 
 
-CONF_PLATFORM_VERSION = "platform_version"
-
 ARDUINO_FRAMEWORK_SCHEMA = cv.All(
     cv.Schema(
         {
diff --git a/esphome/components/esp8266/__init__.py b/esphome/components/esp8266/__init__.py
index 00729921a3..64b127bda3 100644
--- a/esphome/components/esp8266/__init__.py
+++ b/esphome/components/esp8266/__init__.py
@@ -12,6 +12,7 @@ from esphome.const import (
     KEY_TARGET_FRAMEWORK,
     KEY_TARGET_PLATFORM,
     PLATFORM_ESP8266,
+    CONF_PLATFORM_VERSION,
 )
 from esphome.core import CORE, coroutine_with_priority
 import esphome.config_validation as cv
@@ -146,7 +147,6 @@ def _parse_platform_version(value):
         return value
 
 
-CONF_PLATFORM_VERSION = "platform_version"
 ARDUINO_FRAMEWORK_SCHEMA = cv.All(
     cv.Schema(
         {
diff --git a/esphome/components/rp2040/__init__.py b/esphome/components/rp2040/__init__.py
index b262a068fb..ace455add7 100644
--- a/esphome/components/rp2040/__init__.py
+++ b/esphome/components/rp2040/__init__.py
@@ -15,6 +15,7 @@ from esphome.const import (
     KEY_TARGET_FRAMEWORK,
     KEY_TARGET_PLATFORM,
     PLATFORM_RP2040,
+    CONF_PLATFORM_VERSION,
 )
 from esphome.core import CORE, coroutine_with_priority, EsphomeError
 from esphome.helpers import mkdir_p, write_file, copy_file_if_changed
@@ -125,8 +126,6 @@ def _parse_platform_version(value):
         return value
 
 
-CONF_PLATFORM_VERSION = "platform_version"
-
 ARDUINO_FRAMEWORK_SCHEMA = cv.All(
     cv.Schema(
         {
diff --git a/esphome/const.py b/esphome/const.py
index 25d82a0005..27ac0b85cb 100644
--- a/esphome/const.py
+++ b/esphome/const.py
@@ -885,6 +885,7 @@ CONF_X_GRID = "x_grid"
 CONF_Y_GRID = "y_grid"
 CONF_YEAR = "year"
 CONF_ZERO = "zero"
+CONF_PLATFORM_VERSION = "platform_version"
 
 TYPE_GIT = "git"
 TYPE_LOCAL = "local"