Contact Us

General Information

IPAC is located in two buildings on the Caltech campus in Pasadena, California:

David W. Morrisroe Astroscience Laboratory (770 South Wilson Avenue)

Keith Spalding (3rd floor; 1200 E California Blvd)


(626) 395-1919

Mailing Address:

MC 100-22 (Morrisroe Building) or MC 314-6 (Keith Spalding Building)
1200 E California Blvd
Pasadena, CA 91125

To get in touch with a specific IPAC staff member visit the staff directory.

Visitor Information

Getting to Caltech

Building Access 

IPAC's normal operating hours are Monday-Friday from 8 a.m. - 5 p.m.  If you need to have access to the buildings outside of normal operating hours, you may request an access card or key for the duration of your visit.

  • Keith Spalding east double doors are locked at 5:30 a.m. and unlocked at 7 a.m. The west door is always locked. 
  • Morrisroe front door is locked at 5 PM and unlocked at 7:45 a.m.  The interior lobby door is always locked; use the directory and phone to contact your IPAC host or dial x1919 for Reception.

Parking Locations

Parking is available in the underground parking structure just south-east of the Keith Spalding building (see Keith Spalding Parking Map or Morrisroe Parking Map). 

Limited street parking may be available just south of the Morrisroe Bldg at the entry to Tournament Park. 

Parking Permits

For car parking, visitors must have a Caltech Parking Permit, which can be obtained from the pay station located at the California Blvd parking structure. Individuals with handicapped access must also display a parking permit, but otherwise follow regular handicapped parking regulations. 

JPL personnel may use their JPL parking permits to park at Caltech. Colored JPL permits that are valid On-Lab are now valid in commuter spaces in all Caltech lots and structures. Qualified JPL personnel that do not have On-Lab parking privileges may obtain a temporary permit from the JPL Parking Office when they have a need to park at Caltech.

Hours of enforcement are Monday - Friday, 7 a.m. to 5 p.m. Red zones, fire lanes, no parking zones, handicapped spaces, and certain posted reserved spaces are enforced 24 hours a day, 7 days a week.

More info?

For visitors coming to Caltech, Caltech maintains a visitor webpage with information about parking, hotels and more. Please see:

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