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Commission adopts staff noise and disclosure conditions for proposed 433 Mason Street hotel
Summary
The commission voted to adopt staff comments asking for STC-rated windows, amended acoustical studies if design changes, lighting and safety plans, and guest disclosure for a proposed 14‑story hotel at 433 Mason Street; architect said the design will include required STC and wall assemblies.
The San Francisco Entertainment Commission on Feb. 3 adopted staff recommendations and additional noise-related conditions for a proposed 14‑story tourist hotel at 433 Mason Street, which would replace a four‑story parking garage and sit within 300 feet of several entertainment venues.
Deputy Director Azevedo told the commission that staff reviewed a sound study accounting for nearby places of entertainment and recommended the standard Chapter 1.16 residential conditions plus extra measures negotiated with the project sponsor. Staff asked that the project incorporate the recommended minimum STC ratings for windows and exterior walls identified in the Charles Salter Associates analysis (dated July 10, 2018) and that any design changes trigger an amended sound study.
Architect Sarah Clark of Stanton Architecture said the hotel would front Mason Street at nine stories, step back to 14 stories at the rear, include ground-floor retail and a back‑of‑house bar, meeting rooms on level two and the majority of guestrooms above. Clark said the design team will retain Charles Salter & Associates for acoustical envelope work and incorporate STC and impact-rated floor and wall assemblies. ‘‘We are in agreement with their report and we intend to comply,’’ Clark said.
Commissioners and staff discussed guest disclosure practices to alert future guests that the site sits near live‑music venues and the need for outdoor lighting and safety plans. Staff noted that disclosure practices are clearer for residential projects and suggested a similar approach for hotel guests — for example, a check‑in notice — while relying on STC treatments to minimize interior noise impacts.
An unnamed commissioner moved to adopt the staff‑recommended conditions; the motion was seconded and the commission recorded aye votes from the commissioners present. The commission directed staff to ensure the standard conditions (STC ratings, lighting/safety plans and disclosure) are included in comments to Planning and the Department of Building Inspection.
