About Us

The Northwest Information Center (NWIC) of the California Historical Resources Information System is one of nine information centers affiliated with the State of California Office of Historic Preservation (OHP) in Sacramento.

Our office is located at 150 Professional Center Drive, Suite E, Rohnert Park, CA 94928.

We are open from 9:00-4:00 for drop-in access on Mondays and Fridays and require appointments on Tuesdays, Wednesday, and Thursdays.

Contact information for all Information Centers may be found here.

These Information Centers are non-profit organizations located at various universities, museums, and tribal organizations throughout the state of California. Each center serves a specific geographic area within the state. The NWIC service area includes 18 coastal, Bay Area, and inland counties, from the Cailifornia-Oregon border in the north to Monterey in the south. This area comprises over 15% of the State of California.

The purpose of the center is...

  • to manage historical resources records, reports, and maps.
  • to supply historical resources information to the private and public sector (some restrictions do apply.)
  • to provide educational support and information about historical resources in California to the general public.

Services Offered

NWIC staff regularly assist Historical Resources Consultants undertaking research in history and archaeology as well as providing information to landowners, scholars, and the general public about archaeology, history, architecture, and historical resources legislation.

Research and information is provided to more than 100 federal, state, or local government agencies, as well as over one thousand private historical resource consultants, environmental, planning, engineering, and development firms. Approximately 2000 requests for information are fulfilled each year.

Inventory access, products and services are provided on a fee-for-service basis.


Upcoming office closure:

The office will be closed on Tuesday, March 31st, in honor of César Chávez Day


Starting Monday, March 30th, 2015, the NWIC will not be available to drop in appointments on Mondays or Fridays.

Please call or email in advance to see if an opening is available, as appointments will be required for all in-house records searches.

NWIC has a secure FTP

The Northwest Information Center has a secure FTP site available to electronically transmit records search results back to you (only for those areas that are maintained in our geographic information system) or to submit resource records or reports (as PDFs). For more info, send us an email, give us a call, or click here for more info.

New CHRIS Access Policy

As of March 1, 2013, all CHRIS Information Centers require that you complete the new CHRIS Information Access and Use Agreement and any additional applicable forms (i.e., CHRIS Data Authorized User Form, etc.) if you are requesting confidential record searches. To obtain a copy of the forms, use the links below or go to the Office of Historic Preservation’s (OHP) web site.

Please feel free to contact this office with any questions or go to the OHP web site for additional information about this change.

CHRIS Access and Use Agreement

CHRIS Authorized User Form

CHRIS Conditional Use Agreement

CHRIS Data Request Form

CHRIS Access Agreement Short Form

Fees for Inventory Access may be accessed here.