My passport states that my "extension of stay is permitted up to the 22 March 2016" how long before this date am I permitted to apply. I am assuming that another non O immo visa is not required. Thanks.

Visas are never extended.

Extensions of stay can be applied for up to 30 days before the "permission" to stay expires.

On what basis will you be applying for an extension of stay?

If you're referring to renewing a 1 year extension of stay you can do it within the last 30 days (45 at some offices). You don't need a new visa.

Visas are never extended.

Extensions of stay can be applied for up to 30 days before the "permission" to stay expires.

On what basis will you be applying for an extension of stay?

Marriage.

If you're referring to renewing a 1 year extension of stay you can do it within the last 30 days (45 at some offices). You don't need a new visa.

It will be at Jomptien.

30 days - they were telling people to come back at xxx date today. The queue was 4 metres outside the entance today. Very busy.

Visas are never extended.

Extensions of stay can be applied for up to 30 days before the "permission" to stay expires.

On what basis will you be applying for an extension of stay?

Will I actually lose 30 days by applying 30 days early?

Visas are never extended.

Extensions of stay can be applied for up to 30 days before the "permission" to stay expires.

On what basis will you be applying for an extension of stay?

Will I actually lose 30 days by applying 30 days early?

No time will be lost.

Visas are never extended.

Extensions of stay can be applied for up to 30 days before the "permission" to stay expires.

On what basis will you be applying for an extension of stay?

Will I actually lose 30 days by applying 30 days early?

Nope. You will lose nothing.