Advice sought: my wife and I work in a neighbouring country to Thailand. We plan to spend August near Hua Hin in a private rented house. We hold UK passports so normally enter as tourists on a visa-free basis and get a 30-day stamp (we rarely stay more than a week). Our August plans mean we will spend more than 30 days this time.

Two questions:

How easy is it to get a 30-day tourist visa extension at the Hua Hin Immigration office?

How does one get a TM 30, which I understand is required, if staying in a private house?

Thanks in advance for