Heritage's mission is to preserve and enhance San Francisco's unique architectural and cultural identity.

Learn more about Heritage

Save the Date for Soirée 2018!


Photo caption: Pier 70, photo by Light and Shadow


Lights On! Launching Historic Pier 70

Saturday, May 19, 2018

Union Iron Works Historic District

20th and Illinois Streets, San Francisco

Soirée 2018 offers  a spectacular evening of discovery at the new Historic Pier 70, including a cocktail hour and seated dinner followed by a rousing music-and-light show and dance party on “The Piazza.” Come in black tie or nautical-inspired attire.

6:00 PM – 9:00 PM
Cocktails and Dinner

8:30 PM – Midnight
Piazza Party

After-party featuring visual wizardry by Obscura Digitallive music by Mustache Harbor with a crowd-pleasing DJ (to be announced).

For reservations, underwriting opportunities, or to purchase tickets, contact Claire Flanegin, or call 415-441-3000 ext. 25.

Completed in 2018, the Historic Pier 70 project honors the shipyard’s industrial past while creating a community of innovative companies clustered amid former machine shops, ship building bays and a shared piazza.

Sponsorship Levels and Benefits

Sponsorship Form


RSVP Today! 2018 Semi-Annual Meeting – Limited Seats


At Heritage’s 2018 Semi-Annual Meeting on Wednesday, January 31, John Rothmann, a radio talk show host on KGO 810 AM and grandson of Florine Haas Bransten, will recount family anecdotes found in the memoir, The Haas Sisters of Franklin Street: A San Francisco Memoir of Family and Love (1979, 2017), written by his mother, Frances Bransten Rothmann (1914-1984).

Co-published by Heyday and Heritage in October 2017, The Haas Sisters brings to life a San Francisco of the past and tells the story of a family united by love. The book has been entirely redesigned and expanded, including over 100 historic photos from the family’s personal collections.

Outfitted with a new foreword by Kevin Starr (1940-2017), this account of nineteenth- and early twentieth-century San Francisco vividly evokes the luxurious lifestyle and close bond shared by sisters Alice Haas Lilienthal and Florine Haas Bransten, the daughters of William and Bertha Haas. Florine and Alice lived either together or just blocks apart on Franklin Street for their entire lives. In 1903 Florine married Edward Brandenstein (later shortened to Bransten) and moved into 1735 Franklin Street, while Alice and Samuel Lilienthal stayed to raise their family at 2007 Franklin Street.

While author Frances Bransten Rothmann recreates her mother and aunt’s world of leisure with lively descriptions of high tea at the Palace Hotel, excursions across oceans, and extravagant holiday celebrations that overfilled ballrooms with celebrants, her narrative is much more than a chronicle of leisure and opulence. Rothmann makes clear that the true treasure of those Franklin Street houses was Florine and Alice’s devotion to each other, their families, and their community. In inhabiting the sisters’ daily lives of telephone calls, errands, inside jokes, and myriad philanthropic projects, we can delight in the profound sense of wellbeing — of home — that emanates from the pages. And by witnessing two lifetimes full of kindnesses that extended from family to perfect strangers, The Haas Sisters enables the reader to see the best in others and in the marvelous City by the Bay.

In addition, President and CEO Mike Buhler will provide an update on Heritage’s latest activities, including public-policy and advocacy priorities in 2018.




On Wednesday, January 31, please gather at the Haas-Lilienthal House, 2007 Franklin Street, from 6:00 to 8:00 p.m., for the meeting and lecture. The Semi-Annual Meeting is free for members (TO ACCESS FREE MEMBER TICKET, PLEASE USE ACCESS CODE) and $10 for non-members. Email tle@sfheritage.org and RSVP HERE.

Windows of History


Photo by Scott Hahn

Illuminating History Through Art

Through the month of November, the Haas-Lilienthal House will be aglow each evening from 5 p.m. to 9:30 p.m. with a site-specific, multi-media installation by artist Ben Wood. Drawing from a trove of family photos and home movies, the artwork was projected onto the front parlor windows of the house after dark. It vividly portrays the people, traditions, and celebrations that enlivened 2007 Franklin Street from the 1880s to 1972. Rooted in historic episodes and events, Wood’s unique projection artwork evokes a connection of the past with the present and future in a startling manner. Through the medium of contemporary video technology, his installation at the house engaged audiences in a way rarely associated with the interpretation of historic sites.


Further reading:

NBC Bay Area News:


SF Chronicle:


SFGATE Windows of History:


Holiday Open House & Toy Drive


T’is the season! Join Heritage for an afternoon of holiday fun at The Haas-Lilienthal House to show our appreciation for our annual membership support and public interest. Enjoy some holiday cheer, festive buffet, and a visit from Santa! Heritage will also hold a Toy Drive for Toys for Tots during the Holiday Open House.Free for members (available through an access code. Email tle@sfheritage.org for member code.) and their guests; $15 for the general public or bring a new toy for free admission!

Mayhem Mansion SF Returns!


Mayhem Mansion SF
A Haunted House Experience for Two Weekends Only!
October 20, 21 and 27, 28
Purchase tickets through EventBrite.com, search “Mayhem Mansion SF”

Mayhem Mansion returns for its fifth year of twisted shenanigans. This year’s tours are extra special since guests will get a sneak peek at recent renovations before we reopen to the general public in November!

Your fun begins in the foyer, where a groovy ghoulie will lead you on a magical tour through the rotting rooms and historic halls. It seems that recent construction may have shaken a few ghosts loose, and you never know who, or what is still lurking in the corridors!

Your tour ends in the Spookeasy, our Halloween haven stocked with refreshments and fun! The Spookeasy will be open during event hours and accessible through a separate outside entrance. It will feature a cash bar serving beer, wine, and elixirs. Alcohol served to guests 21 and over only. Nonalcoholic beverages will also be available. Credit cards accepted.

Proceeds benefit the continued maintenance and preservation of the Haas-Lilienthal House under the direction of San Francisco Heritage.

In Memoriam: Bruce Bonacker


Bruce Bonacker, San Francisco architect, community activist, historic preservation advocate, and stalwart Heritage board member, died peacefully on August 3, 2017, at age 69,  after a battle with a rare type of cancer.   

Bruce was born in Albany, New York and grew up in the suburb of Delmar. He received a degree in Architecture from Rensselaer Polytechnic Institute (RPI) in Troy, NY. Bruce then joined VISTA (Volunteers in Service to America), a national service program designed to help alleviate poverty. He was assigned to western NY State where he worked on designing housing for migrant workers.  After his year in VISTA, he loaded his car with his architecture portfolio and a few belongings and headed for San Francisco in the late 1970s, never looking back. He worked at Bull, Volkmann, and Stockwell Architects before opening his own firm, Bonacker Associates.  

Bruce’s passion was historic preservation — in San Francisco and beyond. He was active in many community improvement organizations. He initially served on the San Francisco Heritage board from 1990 until 2007, including a stint as board president, and then rejoined the board in 2010. He remained fully engaged in the work of the organization until just a few weeks before his death. Bruce also served on the boards of the Glen Park Neighborhood Association (including past president) and Friends of the Geneva Car Barn, was a member of the San Francisco Historic Preservation Fund Committee, and contributed to innumerable other community-focused efforts. 

“Bruce was one of the most dedicated board members of Heritage that I have known,” remembers former board president David Wessel. “He was very direct, and never shy about communicating his views; in a good way.  As president of Heritage I had board members who had no problem criticizing, but did not want to jump in to help. In stark contrast, Bruce was always ready and willing to aid me in whatever I needed. I could always depend upon him to be there and many times I reached out to him for his counsel.  He had sound judgment and behind his somewhat abrupt character there was a very personal and sensitive individual.”  

In a recent profile in Glen Park News, Bruce reflected on his commitment to historic preservation and neighborhood “emancipation”: “I’d like to think I accomplished a great deal [on the board and as president of Heritage], but it’s reasonably well hidden. My interest in preservation came during college, but I have retained that interest as an architect, as well as advocacy for neighborhood ‘emancipation.’ “The concept of architectural preservation and the concept of neighborhood conservation — improvements can happen on both. Communities shouldn’t be stalled and maintained as they are forever. That’s not my view of preservation.” Please see the full  story  in the Glen Park News for more about Bruce. 

Bruce is survived by his sisters Jeanne Baum and Elizabeth Stevens, both in the Albany, New York area, as well as his four nephews and nieces and numerous grand-nephews and grand-nieces. His sisters were with him in San Francisco when he passed away. 

A memorial service is planned at the Haas-Lilienthal House on Saturday, October 14 from 2pm to 5pm. Please RSVP to San Francisco Heritage at http://bit.do/BruceBonacker. Donations in his memory may be made to San Francisco Heritage, 2007 Franklin Street, San Francisco, CA 94109. 

2017 Lecture Series


Heritage is excited to announce the 2017 Lecture Series line-up!

Each year, Heritage’s Lecture Series explores the breadth of San Francisco’s cultural inheritance in historic settings throughout the city. From July through November, lectures are held on Thursday evenings at 6:00 p.m., with doors opening at 5:30 PM.

Individual tickets are $10 for Heritage members and students (with ID) and $15 for the general public. Series passes (all five lectures) are $40 for members/students and $60 for the public.

House and Walking Tours Updates!


The Haas-Lilienthal House will be CLOSED for regular public tours and event rentals from March 1, 2017 – October 2017, for planned upgrades and restoration.

During this period, the Pacific Heights Walking Tour will be available on Sundays at 12:30 PM by advance reservation only (MUST GIVE AT LEAST 48 HOURS NOTICE). Private walking tours can also be scheduled during the week (subject to availability). For reservations, questions, or concerns please contact Pam Larson — 415-441-3000 ext. 14 or email plarson@sfheritage.org.