Finding O’Hanlon Center can be a slight challenge the first time you visit… but once you arrive here, you’ll hopefully appreciate the ‘off the beaten path’ feeling!  (Scroll down for Navigation Suggestions & Parking Info.)

Address: 616 Throckmorton Ave, Mill Valley CA 94941

Phone: (415) 388-4331

O’Hanlon Gallery Hours

Tuesday - Saturday 10:30 a.m. – 2:30 p.m.

Online Gallery open 24/7

Office Hours:

10:30  a.m. to 3:00 p.m. Monday-Friday

Or by appointment.

Staff hours may vary, so please call ahead or email us for an appointment!

Please phone in advance regarding accessibility for people with disabilities, and we will make every effort to accommodate you.


  • There are limited parking spaces on-site, only about 6-7 spaces in our parking lot at the entrance.
  • On-street parking is allowed; Please be sure not to block neighbor’s driveways, sidewalks, or other entrances. We depend on maintaining good relations with our Neighbors! An 11 foot clearance in road is required for emergency vehicles.
  • We strongly encourage car-pooling when coming for larger events.


  • There is 1 designated Accessible Parking space at the top of the long driveway near our Loft building. If you have questions about access we recommend calling ahead so we may assist you, or offer specific directions. (415) 388-4331

Suggestions & Landmarks:

  • On your first visit…we recommend using mapping software on a smartphone, if available.
  • We are 1 mile out of downtown Mill Valley, heading North-Northwest up Throckmorton Ave, towards Mt Tam.
  • We are exactly 1/2 mile past the Mill Valley Library. (There is a traffic circle just prior to the Library.)
  • O’Hanlon is in a residential neighborhood, so it’s easy to think you’ve missed us!
  • There is a small sign and parking area on the right hand side, just at a bend in the road.