Related: Jomtien office guide · Queue patterns · Non-O docs · Marriage Non-O docs
Why timeline matters
First-time extenders budget 45 minutes. Reality on Monday at Jomtien: 4–6 hours door to door if documents pass first review — longer if sent away for bank letter refresh. This hour-by-hour guide reflects May 2026 client reports from Non-O, Marriage O, and DTV extensions.
T-minus 1 day — preparation
- Confirm expiry window (usually 30 days before until expiry date for annual extensions).
- Fresh bank letter — 7-day validity safest for Jomtien.
- Print TM30 from tm30.immigration.go.th.
- Photocopy passport pages, lease, marriage cert if applicable.
- Cash: ฿1,900 extension + ฿50 photocopies.
- Outfit: collared shirt, long trousers, closed shoes.
- Breakfast — no food vendors inside; hydration bottle.
07:30 — Arrival Building A
Security bag check. Queue ticket machine — lower number earlier arrival. Parking limited; Grab recommended. Mon/Tue highest volume.
08:00–09:30 — Document screening
Number called to counter. Officer reviews stack. Send-aways: old bank letter, missing TM30, wrong photos, incomplete TM7. Fixable same day if time remains; legalisation issues require weeks.
09:30–11:30 — Processing
Passport held. Possible brief interview — marriage extensions, first-time DTV. Payment instruction to cashier.
11:30–13:00 — Payment & passport return
Pay ฿1,900 at cashier. Verify stamp dates before leaving. Lunch closure may pause counters 12:00–13:00 — late morning arrivals may slip to afternoon.
13:00–16:00 — Afternoon queue spillover
Monday arrivals after 09:30 often finish afternoon. Do not plan evening flight same day without buffer.
Building A vs B reminder
Extensions vs some conversions — wrong building wastes hour. Ask security in Thai/English at entrance.
After exit
Photo all stamps. Update expiry countdown. Schedule 90-day. Apply re-entry permit before international trip if needed.
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Who should accompany you
Marriage Non-O first extension: Thai spouse with ID strongly recommended. ED extensions: school official letter sometimes insufficient without school contact number immigration can call. Agent accompaniment legal but agents cannot enter interview room — they wait outside.
Children and dependents
If dependent visas linked to your extension, verify their stamps align — renewing primary holder while dependent overstay creates family-wide problem. Photograph dependent stamps same day.
Disability and accessibility note
Building A has elevator but queue standing lengthy — foldable stool some retirees bring. Toilet facilities available ground floor.
Same-day rejection recovery
Sent away for bank letter — if before 11:00, some applicants reach nearby bank branch for same-day stamped letter and requeue afternoon. Sent away for TM30 — online filing sometimes reflects within hours if landlord cooperates — return next day rather than same day.
Post-extension checklist
At home same day: photograph stamp, update expiry countdown, email copy to spouse if joint planning, file TM30 reminder if re-entry planned. Schedule next extension 30 days before new expiry — Jomtien punishes repeat last-minute Monday filers. Keep bank letter template saved — next year same process.
Bring pen, paper clip, and folder — officers appreciate organised stacks. Wet season May–October: arrive earlier as rain slows Grab traffic from Naklua and Pratumnak.