Historic Preservation Commission backs Lyon–Martin House landmark but removes adjacent vacant lot from recommendation

The San Francisco Historic Preservation Commission voted Feb. 17 to recommend landmark designation for the Lyon–Martin House at 651 Duncan Street while striking the adjacent undeveloped parcel, 649 Duncan, from the nomination.

The action followed a staff presentation and public testimony from historians, LGBTQ preservation advocates and the property owner. Jacob Bentelmann, representing Supervisor Rafael Mandelmann, described Del Martin and Phyllis Lyon as “icons of the LGBTQ rights movement” and said the designation would help recognize underrepresented sites tied to lesbian history in San Francisco.

Pilar Lavalley, Planning Department staff, summarized the department’s research and recommended that the commission find the property eligible for landmark status for the period of significance the department identified, 1955–2020, the years the couple owned and occupied the site. Lavalley said staff’s recommendation initially included both parcels but did not propose treating cremated remains reportedly scattered on the site as a local character‑defining feature.

Public commenters overwhelmingly included preservation advocates and local residents in favor of designation. Shane Watson, representing the Friends of the Lyon–Martin House, urged the commission to approve the nomination and endorsed a National Trust suggestion that the undeveloped parcel be considered as part of a memorial. Several institutional supporters—among them the GLBT Historical Society and the National Trust for Historic Preservation—also called for designation.

The property owner, Meredith Jones McCann, told the commission she supports recognition of Martin and Lyon but opposed designating the vacant lot, saying the estate did not disclose the home’s history when she purchased the properties and that landmarking the empty lot would impose significant constraints and financial burdens on a private homeowner. McCann also raised public‑health citations she said apply to the distribution of human remains, citing Health and Safety Code provisions.

Commissioners debated legal and practical issues: whether interior character‑defining features could appropriately be identified for a private residence, whether the vacant lot had a clear connection to the couple’s documented activities at the home and how to balance commemoration with private property rights. Deputy City Attorney Andrea Risisky advised that the commission may identify interior features where those spaces historically were accessible to members of the public, but cautioned about past litigation that limited the city’s authority over purely private interiors.

Commissioner John Pearlman moved to recommend approval of the landmark designation while removing the undeveloped parcel, 649 Duncan Street, from the recommended designation. The motion passed on roll call 6–1, with Commission President Hyland voting no. The commission’s recommendation and any amendments will be transmitted to the Board of Supervisors for final action.

Next steps: the commission’s recommendation will be forwarded to the Board of Supervisors. The commission and staff said they will continue discussion about the scope of character‑defining features and possible non‑regulatory commemoration options, such as plaques or a nonprofit custodianship, while the Board considers the formal ordinance.

Sources: Planning Department staff report and testimony to the San Francisco Historic Preservation Commission, Feb. 17, 2021.