diff --git a/docs/interface.md b/docs/interface.md
index 1613021..f32bd3b 100644
--- a/docs/interface.md
+++ b/docs/interface.md
@@ -141,9 +141,12 @@
 ## Properties
 
 A property must have the YAML property `name` and `type` and may optionally
-have `description`, `default`, and `errors`.  The `default` defines the default
-value of the property. See the `Methods` section above for more information on
-errors.
+have `description`, `flags`, `default`, and `errors`.  The `default` defines the
+default value of the property. See the `Methods` section above for more
+information on errors.
+The only current supported value for `flags` is `const`, which corresponds to
+SD_BUS_VTABLE_PROPERTY_CONST, making the property read-only via D-Bus but
+still writable by the app implementing it.
 
 Example:
 ```
@@ -151,6 +154,8 @@
     - name: CardsRemaining
       type: uint32
       default: 52
+      flags:
+        - const
       description: >
         The number of cards remaining in the deck.
       errors:
diff --git a/example/net/poettering/Calculator.interface.yaml b/example/net/poettering/Calculator.interface.yaml
index af4dd1b..6e44093 100644
--- a/example/net/poettering/Calculator.interface.yaml
+++ b/example/net/poettering/Calculator.interface.yaml
@@ -53,6 +53,8 @@
     - name: Status
       type: enum[self.State]
       default: Success
+      flags:
+        - const
       description: >
         The current state of the Calculator.
     - name: Owner
diff --git a/tools/sdbusplus/property.py b/tools/sdbusplus/property.py
index 8465315..33c7e25 100644
--- a/tools/sdbusplus/property.py
+++ b/tools/sdbusplus/property.py
@@ -8,6 +8,7 @@
         self.typeName = kwargs.pop('type', None)
         self.cppTypeName = self.parse_cpp_type(self.typeName)
         self.defaultValue = kwargs.pop('default', None)
+        self.flags = kwargs.pop('flags', [])
         self.errors = kwargs.pop('errors', [])
 
         super(Property, self).__init__(**kwargs)
diff --git a/tools/sdbusplus/templates/interface.mako.server.cpp.in b/tools/sdbusplus/templates/interface.mako.server.cpp.in
index aee5424..c8d5f65 100644
--- a/tools/sdbusplus/templates/interface.mako.server.cpp.in
+++ b/tools/sdbusplus/templates/interface.mako.server.cpp.in
@@ -142,8 +142,12 @@
                      details::${classname}::_property_${p.name}
                         .data(),
                      _callback_get_${p.name},
+        % if 'const' in p.flags:
+                     vtable::property_::const_),
+        % else:
                      _callback_set_${p.name},
                      vtable::property_::emits_change),
+        %endif
     % endfor
     vtable::end()
 };