Commission deadlocks on 160 Spring Grove house; project continued to Dec. 16 for more design context

A contested proposal for a new single-family home at 160 Spring Grove was continued to the Planning Commission’s Dec. 16 meeting after the panel deadlocked on a motion to approve on Dec. 2.

Assistant Planner Jackson DeBronier summarized extensive revisions since the July hearing: the applicant reduced visual massing by segmenting the front retaining wall into two tiers (a lower 6-foot wall and an upper 9-foot wall separated by a planted strip), shifted the driveway and added a required 20-foot fire-lane turnout per Ross Valley Fire Department direction, and revised façade articulation with recessed windows, a belly band and planters. Jackson told commissioners the revised design would require about 540 cubic yards of excavation, 60 cubic yards of fill and the removal of 43 on-site trees identified as heritage size (average ~7 inches DBH). Staff recommended approval and a CEQA Class 3 exemption, noting the fire department’s vegetation-management requirements and the need for Public Works permits for tree removals.

Property owner Andrea (first name only in the record) described design solutions to integrate the dwelling into the steep site: terraced retaining walls softened with planting, additional façade articulation and a large bio-retention vault intended to prevent any net increase in stormwater runoff. “We created this multi tiered retaining wall, which...is so much better looking,” Andrea told the commission, and said the project seeks to preserve healthier redwoods above the building footprint while removing trees in the area required for the fire-truck turnout and safe access.

Several commissioners praised the applicant’s revisions but split over whether the project meets the design-review findings for neighborhood compatibility and massing. Concerns focused on the overall visual massing from the street, how the stair and lower façade are treated in renderings, unresolved construction logistics on a narrow site, and whether the proposed materials and color palette sufficiently blend with neighboring homes. Commissioner Strauss said he had “a hard time making the finding for the design review,” expressing that the structure still read as a large, relatively monolithic volume on a steep lot despite the added articulation.

Commissioner Smith moved to approve the project per the staff report; the vote was 3–3 (ayes from Commissioners Koblek de Leon, Smith and Hayman; no votes from Commissioners Pipkin, Tunney and Acting Chair Strauss), which by rule produced no action at the December 2 meeting. The commission subsequently voted to accept staff’s recommendation to continue the item to Dec. 16 to allow the applicant time to respond to commissioner guidance. Commissioners recommended the applicant return with clearer context photos of nearby houses, consider material and color changes (for example, darkening the base to anchor massing), and, if possible, have a design consultant or architect available to address detailed massing and articulation questions at the continued hearing.

Next steps: The applicant will coordinate with planning staff on submittal timing and materials for the Dec. 16 meeting; remaining approvals (Public Works permits for tree removal, building permits and final drainage/retaining-wall details) will be resolved at subsequent permit review stages.