• Main Entrance to the Castro Valley Library-Photo by David Wakely Photography
  • Stacks at the BookStore-Photo by David Wakely Photography
  • Inside the Friends BookStore at the Castro Valley Library
  • At a Book Sale
  • April Book Sale
  • April Book Sale
  • Castro Valley Library
  • Street view of the new libary by David Wakeley Photography
  • At the August 2012 book sale
  • Customers in line
  • At the November-December 2013 Book Sale
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Coronavirus Announcement

Due to concerns about the coronavirus, the Friends of the Library bookstore is closed until further notice. During the closure, we cannot accept book donations. Please do not leave any donated books outside the store since volunteers will not be available to process them. Thank you for your understanding.

Spring Book Sale

POSTPONED - Due to the COVID-19 pandemic, the Spring Book Sale has been postponed until further notice.

Mark your calendars now for the Friends of the Castro Valley Library Spring Book Sale:

  • Friday, April 17th from 6 - 8 p.m. (Members-Only Preview Night)
  • Saturday, April 18th from 10 a.m. - 4 p.m.
  • Sunday, April 19th from 1 - 4 p.m. (It's Bag Day, where a bag of books is only $4, and we supply the bags!)

This sale includes at least 300 cartons of books with our usual large selection of fiction and mystery books, and many categories of nonfiction, antiquarian, and special price books. You will be glad you came! By the way, we accept both credit and debit cards.

Plan to attend? Please remember to bring your current (2020) Friends of the Castro Valley Library membership card in order to take advantage of your $2.00 discount. You can join or renew at the door, or purchase a membership ahead of time from the Friends Bookstore.

We will need volunteers for all sale days as well as for the set-up and clean-up days. Contact us at 510-733-3285, or This email address is being protected from spambots. You need JavaScript enabled to view it., if you can volunteer or if you have any questions about the work or requirements. A signup sheet will be available in the Friends Bookstore approximately one month before the Book Sale date.

Friends of the Castro Valley Library

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Friends of the Castro Valley Library is a non-profit 501(c)(3) organization serving our community and supporting the Castro Valley Library by providing funds for library services, organizing fund raising and community activities, advocating at the local, state and national level for public support of libraries and developing an active and well-informed membership.

Our BookStore contains over 2500 almost new and used books, audiotapes, CDs and DVDs with a constant turnover of the inventory. Only the best quality of all the donated books are sold in the store. Special books may be sold online through Amazon.com. In addition, each year over 1200 boxes of good quality books and audio-visual materials are put in temporary storage for our three annual weekend Book Sales. We also have off-site sales at Zocalo Café in San Leandro.  Remaining books are donated to deserving organizations and programs throughout Alameda County.

Available on Amazon.com

The Friends currently have over 100 books and other media listed on Amazon.com. Our name on Amazon is FriendsofBooks, and our entire on-line store can be viewed at http://www.amazon.com/shops/A1AE92DUB78GQ4. You can access the store by typing the above string in your browser, by clicking on our name when viewing one of our listings or by clicking on the link above.

Don’t forget to mention us when purchasing through Amazon Smile. When you select Friends of the Castro Valley Library as your charity of choice, we will receive a 0.5% donation every time you make a purchase. Many great items “from soup to nuts” are designated as Smile products, so please check it out.

Visit our on-line store to see what we're offering today!