This Thai immigration office covers the area of Chonburi Province (except the following which falls under Thai immigration in Pattaya – Banglamung District, Koh Sichang District, Sattahip District, Pattaya District). Chachoengsao Province also falls under this office.
You can extend your Thai visa here be it a Thai tourist visa, marriage visa in Thailand or a retirement visa in Thailand. Note the location of Thai immigration in Si Racha. If you live in Pattaya then you cannot use this office but the one in Pattaya.
Thai Immigration Si Racha Chonburi
3/1 Choem Chomphon Road
Tambon Sri Racha
Amphoe Sri Racha
Chon Buri 20110