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Commission approves restoration of 2622 Jackson Street with small window change
Summary
The Historic Preservation Commission approved a certificate of appropriateness for restoration at 2622 Jackson Street, requiring in-kind stone repairs and replacement of window N104 with a matching double-hung to preserve the landmark's character.
The San Francisco Historic Preservation Commission on Sept. 18 approved a façade restoration and selective window replacement for the George Gibbs Residence and Caretaker's Cottage at 2622 Jackson Street, including a last-minute amendment that requires replacing a kitchen opening (N104) with a double-hung window matching adjacent window 105.
Shannon Ferguson, planning department staff, told the commission the work includes comprehensive sandstone repairs, selective in-kind replacement of 19 wood windows, and replacement of a portion of the front retaining wall. Staff recommended approval with conditions, citing conformance with Article 10 and the Secretary of the Interior's standards.
Project architect Louis Butler outlined the technical sequence for the work, saying the entire portico will be carefully numbered and disassembled, a steel ring will be inserted at the architrave level and columns stabilized with steel plates. "Only one column, number 3, will be new," Butler said, describing the team's approach to matching carved stone units and pinning delaminated sandstone.
Commissioner Black praised the thoroughness of the research and asked about a side-elevation kitchen window labeled N104 that the plans showed as a single pane. Project architect Dave Sturm said the existing window had long been covered on the interior by a pantry and could be replaced as a double-hung. Commissioners agreed the visual match mattered for authenticity; Commissioner Black and others urged replacing N104 to pair with its neighbor.
The commission voted unanimously to approve the project with the staff conditions and the amendment to replace opening 104 with a double-hung window matching 105. Conditions include mock-ups, regular site visits by preservation staff and verification of replacement materials prior to completion.
The project team said it will source Berea sandstone from Ohio for carved replacement units and provide samples and mock-ups for staff review. The commission noted the importance of matching mortar color and stone tooling to maintain the landmark's character.
The project now proceeds to entitlement hearings per the department's timeline; staff and the project team said they will coordinate mock-ups and site inspections required by the approval.
Ending: The commission's action was procedural approval of the certificate of appropriateness with conditions; the project team will return with the required pre-completion mock-ups and allow site visits as specified.
