When i make the reentry permit application while applying for 1 yr extension for temp stay(non immd o visa). It is only valid for one month or it lasts for 1 yr?

It is valid until the end of the current permission to stay, so if you apply once you have your extension it will be valid for nearly a year.

Yep. It matches your permission to stay

If you applied for an extension of stay based upon marriage and applied for a re-entry permit on the date you applied for the extension it would only be valid to the report back date on the under consideration stamp.

I looked at your previous posts and it appears to be the type of extension you may be applying for.

You would get a re-entry permit valid for the remainder of your extension when you got your one year extension stamp at the end of the 30 days.

thank for very clear info all you provided.I raised this enquiry as the officer enquiried me do i need to apply at the first extension time.