Answered my own question today.

I setup a new Database trigger:

CREATE TRIGGER [DB_Add_extended_propeties]

ON DATABASE

FOR CREATE_TABLE,CREATE_VIEW, CREATE_PROCEDURE

AS

SET NOCOUNT ON

DECLARE @eventInfo XML

SET @eventInfo = EVENTDATA()

DECLARE @timestamp DATETIME, @user VARCHAR(100), @ObjectType VARCHAR(50), @ObjectName VARCHAR(50)

SELECT @timestamp=GETDATE()

SELECT @user=SYSTEM_USER

SET @ObjectType=CONVERT(VARCHAR(50),@eventInfo.query('data(/EVENT_INSTANCE/ObjectType)'))

SET @ObjectName=CONVERT(VARCHAR(50),@eventInfo.query('data(/EVENT_INSTANCE/ObjectName)'))

EXEC sys.sp_addextendedproperty @name=N'Created by', @value=@user , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=@ObjectType ,@level1name=@ObjectName

EXEC sys.sp_addextendedproperty @name=N'Purpose', @value=N'' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=@ObjectType ,@level1name=@ObjectName

EXEC sys.sp_addextendedproperty @name=N'Created on', @value=@timestamp, @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=@ObjectType ,@level1name=@ObjectName

GO