Last Updated: Nov 29, 2018 11:06AM PST

To cancel an Individual Reservation on or before May 30, 2019:
Log into ADA Reservation Management and select Modify Existing Reservations. Enter the Confirmation Number, Email Address and Zip Code and select Manage Reservation. Scroll to the bottom of the reservation and select Cancel Reservation.

You may also send us a message through the ADA Registration & Hotel Support Center.


You may call us toll-free at (866) 290-9910 (U.S. & Canada) or (415) 268-2086 (all other countries) Monday – Friday, 9 am – 9 pm Eastern Time.


You may fax your cancellations to (415) 293-4073.

9 rooms or less - 
Reservations must be cancelled at least 72 hours prior to your scheduled arrival to avoid penalty charges. If you do not cancel your reservation in time or fail to check in on the scheduled date of arrival your credit card will be charged in the amount of one night’s room and tax or your check deposit will be forfeited. Your reservation will also be cancelled for the remainder of the stay.

For Group Reservations

Log in to your group account online: ADA Group Block Management. If you do not know your login credentials, please send us a message.
  1. Download the change rooming list template.
  2. Enter “x” into the column labeled with the word CANCEL
  3. Click on the UPLOAD link to process your rooming list. If you prefer, you may send the list directly to ADA Housing for processing. This is the only format acceptable for submission of your rooming list. To submit your rooming list to ADA Housing for processing, send us a message and include the change rooming list document as an attachment. Please note, if the rooming list was not uploaded successfully, do not attempt to upload the rooming list a second time. Please send us a message to have us process your rooming list.

    Once the rooming list is processed, you may click on the Booking List link to view and print a confirmation listing report.

10 rooms or more - 
Should a Group cancel their entire room block, as per their signed Group Booking Contract, they will be responsible for paying the following in liquidated damages to ADA:

May 8, 2019 – June 7, 2019 - 80% of the Total Room Nights x the Single Room Rate
April 8, 2019 – May 7, 2019 - 50% of the Total Room Nights x the Single Room Rate
March 8, 2019 – April 7, 2019 - 30% of the Total Room Nights x the Single Room Rate
Date of Signing – March 7, 2019 - 10% of the Total Room Nights x the Single Room Rate

All cancellations must be made in writing and sent via fax or e-mail to ADA Housing. These monies are due within thirty (30) days of cancellation of the block.