@Frédéric ****************
yes, in theory this is true but be a member of this group for very long and you will quickly learn that immigration offices in the different provinces operate differently. There is little in the way of continuity among the various offices. One example that comes to mind is that some offices will allow you to renew your extension of stay up to 30 days prior to expiration, while others will permit you to renew it 45 days early. There are also many other inconsistencies, especially involving requirements for the non-o married to a Thai national requirements.