Sapp Design Review (P1911)

Community Development Agency


Main Component of the Project

Residential Addition/Accessory Structure


454 Wellesley Avenue
Mill Valley, CA 94941
Parcel Number: 050-052-31



Project Planner

Evelyn Garcia


Anne Laird-Blanton

Project Description

The applicant requests Design Review approval to construct a 67 square foot addition, convert the carport into a 264 square foot garage, and legalize 506 square feet of lower floor area in an existing single-family residence on an improved lot in unincorporated Mill Valley. Per the information provided by the applicant, the existing building area and floor area is 2,573 square feet. The proposed development would result in a building area of 2,904 square feet and a floor area of 2,640 square feet, resulting in a floor area ratio of 32 percent on the 8,057 square foot lot. The proposed building would reach a maximum height of 20 feet above surrounding grade and would have the following setbacks: 29 feet from the western front property line; 47 feet from the northern side property line; 11 feet from the southern side property line; and 57 feet from the eastern rear property line.

The project meets Variance Waiver criteria per Section 22.54.045 of the Marin County Development Code. The variance shall then be waived and the project shall instead be subject to Design Review approval

Zoning: R1 (Single Family Residential, 7,500 square feet minimum lot size)
Countywide Plan Designation: SF6 (Single-family, 4-7 units/acre)
Community Plan (if applicable): Tamalpais Community Plan

Most Recent Project Plans

Sapp Plans

Public Notice

View the Public Notice - This is the Notice and Referral of Planning Application.

Administrative Decisions

View the Administrative Decision