California Service Center: I-140 and I-129 times in 2026
California Service Center (CSC)
The California Service Center (CSC) is one of the two centers that historically adjudicate O-1 petitions on Form I-129. A receipt number beginning with WAC usually means CSC is handling the case. The prefix is the first three letters of the 13-character receipt number and points to the processing center, not to the case status.
How to read your receipt number
A USCIS receipt number is three letters followed by ten digits. The first three letters - the prefix - identify the processing center: WAC corresponds to "California Service Center (CSC)". This is routing, not status: the prefix tells you nothing about approval or denial.
Check your case status by receipt numberWhich forms California Service Center (CSC) processes
By the USCIS chart, 18 of the 22 forms we track go here. For talent visas: I-129 (O), I-485, I-907, I-765, I-131, I-539, I-290B; not here: I-140.
- I-129 (O) - O visa petition (extraordinary ability)
- I-485 - Application to Register Permanent Residence or Adjust Status
- I-907 - Request for Premium Processing Service
- I-765 - Application for Employment Authorization
- I-131 - Travel documents: advance parole, reentry permit
- I-539 - Application to Extend/Change Nonimmigrant Status (including O-3)
- I-290B - Notice of Appeal or Motion
- I-129 (P) - P visa petition: athletes, artists and entertainersP-1A for Major League Sports - Vermont only
- I-129 (H-1B) - H-1B: change of status in the US
- I-129 (L) - L visa: intracompany transfers
- I-129 (E-1 / E-2) - E-1 treaty traders and E-2 investors
- I-129F - Petition for Alien Fiance(e), K-1/K-2Vermont - AWA cases only
- I-130 - Petition for Alien Relative
- I-751 - Petition to Remove Conditions on Residence
- I-824 - Application for Action on an Approved Application or Petition
- I-102 - Replacement/Initial Arrival-Departure Document (I-94)
- I-360 - Petition for Amerasian, Widow(er), or Special Immigrant
- I-821 - Application for Temporary Protected Status
Source: the USCIS chart Service Center Forms Processing (agency date Oct 11, 2024, read Oct 11, 2026). USCIS says the split changes with each center's workload and posts moves on its Workload Transfer Updates page.
How long USCIS takes now
USCIS no longer shows these forms center by center: its processing-times tool reports one office, "Service Center Operations (SCOPS)". So the honest answer to "is this center faster" is that the agency does not publish per-center speed for I-129 and I-140. The figure is the time in which 80% of cases were completed (our read of Oct 2, 2026).
| Form and category | 80% of cases within |
|---|---|
| I-129, O visa (O-1) | 14.5 mo |
| I-140, EB-1A | 32.5 mo |
| I-140, EB-1B | 15 mo |
| I-140, EB-2 NIW | 30 mo |
| I-485, employment-based | 42.5 mo |
| I-765 with a pending I-485, (c)(9) | 12.5 mo |
| I-131, advance parole | 26.5 mo |
Premium processing (I-907) does not change this table: it sets a 15 or 45 business-day clock for the petition. Month-by-month history: USCIS processing times; premium: how premium processing works.
What the community reports
Community members report that with premium processing an I-129 decision usually lands within the premium clock, while regular processing takes noticeably longer and depends heavily on center workload. These are member observations, not official timelines - check the calculator on uscis.gov.
This is community-chat experience, not official data. Current timelines are in the USCIS processing times.
Sources
FAQ
- What does the WAC prefix in a receipt number mean?
- WAC is the California Service Center prefix. It shows which center is processing your I-129 petition and carries no information about the outcome. Check current timelines in the processing-times tool on uscis.gov.
- Can O-1 processing at CSC be sped up?
- Yes, via premium processing (a paid USCIS service with an expedited I-129 clock). It changes speed, not the chance of approval - an officer still decides. Verify the current fee and clock on uscis.gov.
- Does the receipt prefix affect the decision?
- No. The prefix only shows the processing center. The decision is made by an officer based on your evidence, not on the center.
From community practice
Premium processing speeds up adjudication but does not raise the chance of approval - the community repeats this constantly: evidence quality decides, not speed.
An RFE is not a denial. Members note that a structured response with additional independent evidence often leads to approval.
A strong petition usually meets more than the required minimum of three criteria, with a margin on each - common advice in chats to reduce RFE risk.
Distilled from public community chats - observations, not legal advice.
From community discussions
«If you're planning to hire a lawyer, then first find out whether your friends in America agree to such an adventure. Because all the effort could turn out to be useless.»
community member · from public community chats
«The lawyer's job: advise you on the right visa type based on your credentials, request materials from you per a list, properly package it all into a sellable case and file the petition. There's also a market factor - demand has spiked sharply, and lawyers may simply ignore new clients if the case isn't interesting to them or is too complex.»
community member · from public community chats
«EB1 is split into 3 sub-criteria: EB11/EB1(a) - extraordinary ability; EB12/EB1(b) - outstanding researcher; and EB13/EB1(c) - multinational manager (this is like L1). EB2 is LC-based EB, unless you qualify for NIW.»
community member · from public community chats
Personal opinions of community members from public discussions, not legal advice.
Other centers and prefixes
Reference information, not legal advice and not a USCIS decision. Always verify routing, timelines and fees on uscis.gov.